43 problem(s) found in 1727 milliseconds (displaying 43 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND S='StrateGems' AND K='Eindeutige Beweispartie'] [download as LaTeX]
1 - P1000474
Andrey Frolkin
Mikhailo Kozulya
P0055 StrateGems 10 04-06/2000
Thomas Volet gewidmet
2. Preis
(15+6) C+
BP in 17,5
Andrey Frolkin
Mikhailo Kozulya
P0055 StrateGems 10 04-06/2000
Thomas Volet gewidmet
2. Preis
(15+6) C+
BP in 17,5
1. e3 h5 2. Dg4 hxg4 3. Se2 Th3 4. Tg1 Tf3 5. gxf3 e5 6. Lg2 e4 7. fxe4 d5 8. exd5 Sc6 9. dxc6 Lb4 10. cxb7 Lc3 11. bxc3 Dd4 12. cxd4 Lf5 13. Sbc3 Kd7 14. Tb1 Te8 15. Tb2 Te5 16. dxe5 Sf6 17. exf6 Lh7 18. fxg7
Weiße Bauern b2 und g2 schlagen diagonal über Kreuz nach g7 und b7.
Weiße Bauern b2 und g2 schlagen diagonal über Kreuz nach g7 und b7.
Keywords: Unique Proof Game, Volet Pawn (2)
Genre: Retro
Computer test: C+ Euclide 1.11 in 16 Std. 23 Min. Keine Lösung in BP 16,5, Zeit 50 Min. C+ Stelvio 1.4 in 17 seconds.
FEN: 8/pPpk1pPb/8/8/6p1/2N1P3/PRPPNPBP/2B1K1R1
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2023-08-30 more...
Genre: Retro
Computer test: C+ Euclide 1.11 in 16 Std. 23 Min. Keine Lösung in BP 16,5, Zeit 50 Min. C+ Stelvio 1.4 in 17 seconds.
FEN: 8/pPpk1pPb/8/8/6p1/2N1P3/PRPPNPBP/2B1K1R1
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2023-08-30 more...
1. a4 e5 2. a5 e4 3. Ta4 e3 4. Te4+ Se7 5. b4 Sbc6 6. Lb2 Sd4 7. Dc1 Sxe2 8. Lf6 Sg3 9. d4 Sgf5 10. Ke2 Sh6 11. Kf3 Shg8 12. Kg4 e2 13. Dh6 e1=S 14. Se2 Sd3 15. Sc1 Sc5 16. Ld3 Sa6 17. The1 Sb8 18. T1e3 a6 19. Txe7+
Pronkin-Thema mit Platzwechsel: Sg8 wird auf e7 geschlagen, sSb8 wandert nach g8, umgewandelter sSe1 geht nach b8. Zyklischer Platzwechsel von sSb8, sSg8 und sBe7.
Pronkin-Thema mit Platzwechsel: Sg8 wird auf e7 geschlagen, sSb8 wandert nach g8, umgewandelter sSe1 geht nach b8. Zyklischer Platzwechsel von sSb8, sSg8 und sBe7.
Henrik Juel: Partial testing with Natch 3.1
18.0 moves with sDTLSPe7 and wTd5; only sSe7 works (2018-12-14)
Mario Richter: @Henrik: Did you mean "... and wTe4"? (2018-12-15)
Henrik Juel: Yes, I did, Mario (2018-12-16)
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18.0 moves with sDTLSPe7 and wTd5; only sSe7 works (2018-12-14)
Mario Richter: @Henrik: Did you mean "... and wTe4"? (2018-12-15)
Henrik Juel: Yes, I did, Mario (2018-12-16)
more ...
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Keywords: Unique Proof Game, Pronkin Theme (s), Interchange
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.2 04:02:35 Stunden. (hh:mm:ss) Keine Lösung BP 17.5, BP 18.0. Checked by Stelvio 1.2 in about 5 hours.
FEN: rnbqkbnr/1pppRppp/p4B1Q/P7/1P1P2K1/3BR3/2P2PPP/1NN5
Reprints: (7) Quartz 21 07-09/2002
feenschach 153, p. 201, 10-12/2003
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2023-05-30 more...
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.2 04:02:35 Stunden. (hh:mm:ss) Keine Lösung BP 17.5, BP 18.0. Checked by Stelvio 1.2 in about 5 hours.
FEN: rnbqkbnr/1pppRppp/p4B1Q/P7/1P1P2K1/3BR3/2P2PPP/1NN5
Reprints: (7) Quartz 21 07-09/2002
feenschach 153, p. 201, 10-12/2003
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2023-05-30 more...
3 - P1000488
Thierry Le Gleuher
P0030 StrateGems 04-06/1999
Sam Loyd gewidmet
3. Preis
(14+14) C+
BP in 25,5
Thierry Le Gleuher
P0030 StrateGems 04-06/1999
Sam Loyd gewidmet
3. Preis
(14+14) C+
BP in 25,5
1. d4 g5 2. Lf4 g4 3. Kd2 g3 4. hxg3 Sc6 5. Th6 Se5 6. Tb6 Sf3+ 7. exf3 axb6 8. Lc4 Ta3 9. Df1 Tc3 10. Sa3 h5 11. Te1 h4 12. Te6 h3 13. Tc6 dxc6 14. Ke2 Lf5 15. Le6 Da8 16. Lc8 e6 17. d5 Se7 18. d6 Sg6 19. d7+ Ke7 20. d8=T Th4 21. Td1 Sh8 22. Ta1 Kd8 23. Sb1 La3 24. Lc1 Tb4 25. Ld7 Le4 26. Dd1
Hervorragend: Pronkin-Thema mit dem völlig eingeschlossenen wTa1, Switchback von Sb1, Lc1 und Dd1. Ein Rätsel im Geiste von Sam Loyd.
Hervorragend: Pronkin-Thema mit dem völlig eingeschlossenen wTa1, Switchback von Sb1, Lc1 und Dd1. Ein Rätsel im Geiste von Sam Loyd.
Henrik Juel: Natch 3.1 did nothing for an hour (2018-12-13)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 © Reto Aschwanden
33 Minuten, 1 Lösung, Notation OK.
Stelvio Histogramme/Strategien 40, vor der Lösung wegen der Lösezeit
mit Stelvio berechnet. (2023-02-08)
comment
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 © Reto Aschwanden
33 Minuten, 1 Lösung, Notation OK.
Stelvio Histogramme/Strategien 40, vor der Lösung wegen der Lösezeit
mit Stelvio berechnet. (2023-02-08)
comment
Keywords: Unique Proof Game, Pronkin Theme (T), Switchback (SLD)
Genre: Retro
Computer test: Stelvio 1.0
FEN: q2k3n/1ppB1p2/1pp1p3/8/1r2b3/b1r2PPp/PPP1KPP1/RNBQ2N1
Reprints: feenschach 153 10-12/2003
A) Quartz 23 01-03/2004
H57 FIDE Album 1998-2000 2007
Input: Gerd Wilts, 2000-08-01
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: q2k3n/1ppB1p2/1pp1p3/8/1r2b3/b1r2PPp/PPP1KPP1/RNBQ2N1
Reprints: feenschach 153 10-12/2003
A) Quartz 23 01-03/2004
H57 FIDE Album 1998-2000 2007
Input: Gerd Wilts, 2000-08-01
Last update: Silvio Baier, 2023-03-02 more...
paul: Intention: 1.Sc3 f5 2.Se4 f4 3.Sg3 fg3 4.hg3 g5 5.Rh4 Bg7 6.Ra4 Bxb2 7.d4 h5 8.Bxg5 Sh6 9.e3 0-0! (9...Rf8? 10.Bc4 d6 11.Kf1 Bh3 12.Qxh5+ Kd7 13.Sh3??)10.Qxh5 Rf3 11.Bf4 Sc6 12.Qc5 Kf7 13.Sh3 Qh8 14.Bc4+ Ke8 15.Bg8 d5 16.Kf1 Be6 17.Kg1 Kd7 18.Kh1 Re8 19.Rg1 Kc8.
Cooked: 1.d3 g5 2.Bf4 Bg7 3.e3 h5 4.Qxh5 g4 5.Qc5 Bxb2 6.d4 Rh3 7.Bd3 f5 8.Bxf5 Rf3 9.Sh3 g3 10.0-0! d5 11.Sc3 Bxc3 12.Rb1 Be6 13.Rb4 Sh6 14.Ra4 Kd7 15.hxg3 Qh8 16.Bh7 Sc6 17.Bg8 Re8 18.Kh1 Bb2 19.Kg1 Kc8. (2010-07-02)
Henrik Juel: cooked, e.g.
1.Sb1-c3 Bg7-g5 2.Sc3-e4 Bg5-g4 3.Se4-g5 Bg4-g3
4.Sg1-f3 Bh7-h5 5.Bh2xg3 Bh5-h4 6.Th1xh4 Sb8-c6
7.Sg5-h3 Lf8-g7 8.Th4-a4 Lg7xb2 9.Bd2-d4 Sg8-h6
10.Dd1-d3 Bf7-f5 11.Dd3xf5 Th8-f8 12.Df5-c5 Tf8xf3
13.Lc1-f4 Bd7-d6 14.Be2-e3 Lc8-f5 15.Lf1-c4 Ke8-d7
16.Ke1-f1 Dd8-h8 17.Kf1-g1 Ta8-e8 18.Kg1-h1 Kd7-c8
19.Lc4-g8 Lf5-e6 20.Ta1-g1 Bd6-d5 (2018-12-13)
Henrik Juel: there even are shorter games, e.g.
1.Sb1-a3 Bg7-g6 2.Ta1-b1 Lf8-g7 3.Sg1-h3 Lg7xb2
4.Bd2-d4 Lb2xa3 5.Tb1-b4 La3-b2 6.Tb4-a4 Bf7-f5
7.Dd1-d3 Sg8-h6 8.Dd3xf5 Th8-f8 9.Df5-c5 Tf8-f3
10.Lc1-f4 Bd7-d5 11.Be2-e3 Lc8-e6 12.Lf1-d3 Ke8-d7
13.Ke1-f1 Dd8-h8 14.Kf1-g1 Bg6-g5 15.Ld3xh7 Bg5-g4
16.Lh7-g8 Bg4-g3 17.Bh2xg3 Sb8-c6 18.Kg1-h2 Ta8-e8
19.Th1-g1 Kd7-c8 20.Kh2-h1 (2018-12-13)
Moldenhauer: Computerprüfung: Cooked Stelvio 1.31 53 Sekunden.
Keine Lösung: BP 17.5.
Beispiel Stelvio: 1.Sa3 g5 2.Tb1 Lg7 3.Sh3 Lxb2 4.d4 Lxa3 5.Dd3 Sc6
6.Tb4 Sh6 7.Ta4 f5 8.Dxf5 Tf8 9.Dc5 Tf3 10.Lf4 Lb2 11.e3 d5 12.Ld3 Le6
13.0–0 Kd7 14.Kh1 Dh8 15.Tg1 Te8 16.Lxh7 g4 17.Lg8 g3 18.hxg3 Kc8
Schwarz hat nicht rochiert und KBP = 18.0. (2023-06-20)
comment
Cooked: 1.d3 g5 2.Bf4 Bg7 3.e3 h5 4.Qxh5 g4 5.Qc5 Bxb2 6.d4 Rh3 7.Bd3 f5 8.Bxf5 Rf3 9.Sh3 g3 10.0-0! d5 11.Sc3 Bxc3 12.Rb1 Be6 13.Rb4 Sh6 14.Ra4 Kd7 15.hxg3 Qh8 16.Bh7 Sc6 17.Bg8 Re8 18.Kh1 Bb2 19.Kg1 Kc8. (2010-07-02)
Henrik Juel: cooked, e.g.
1.Sb1-c3 Bg7-g5 2.Sc3-e4 Bg5-g4 3.Se4-g5 Bg4-g3
4.Sg1-f3 Bh7-h5 5.Bh2xg3 Bh5-h4 6.Th1xh4 Sb8-c6
7.Sg5-h3 Lf8-g7 8.Th4-a4 Lg7xb2 9.Bd2-d4 Sg8-h6
10.Dd1-d3 Bf7-f5 11.Dd3xf5 Th8-f8 12.Df5-c5 Tf8xf3
13.Lc1-f4 Bd7-d6 14.Be2-e3 Lc8-f5 15.Lf1-c4 Ke8-d7
16.Ke1-f1 Dd8-h8 17.Kf1-g1 Ta8-e8 18.Kg1-h1 Kd7-c8
19.Lc4-g8 Lf5-e6 20.Ta1-g1 Bd6-d5 (2018-12-13)
Henrik Juel: there even are shorter games, e.g.
1.Sb1-a3 Bg7-g6 2.Ta1-b1 Lf8-g7 3.Sg1-h3 Lg7xb2
4.Bd2-d4 Lb2xa3 5.Tb1-b4 La3-b2 6.Tb4-a4 Bf7-f5
7.Dd1-d3 Sg8-h6 8.Dd3xf5 Th8-f8 9.Df5-c5 Tf8-f3
10.Lc1-f4 Bd7-d5 11.Be2-e3 Lc8-e6 12.Lf1-d3 Ke8-d7
13.Ke1-f1 Dd8-h8 14.Kf1-g1 Bg6-g5 15.Ld3xh7 Bg5-g4
16.Lh7-g8 Bg4-g3 17.Bh2xg3 Sb8-c6 18.Kg1-h2 Ta8-e8
19.Th1-g1 Kd7-c8 20.Kh2-h1 (2018-12-13)
Moldenhauer: Computerprüfung: Cooked Stelvio 1.31 53 Sekunden.
Keine Lösung: BP 17.5.
Beispiel Stelvio: 1.Sa3 g5 2.Tb1 Lg7 3.Sh3 Lxb2 4.d4 Lxa3 5.Dd3 Sc6
6.Tb4 Sh6 7.Ta4 f5 8.Dxf5 Tf8 9.Dc5 Tf3 10.Lf4 Lb2 11.e3 d5 12.Ld3 Le6
13.0–0 Kd7 14.Kh1 Dh8 15.Tg1 Te8 16.Lxh7 g4 17.Lg8 g3 18.hxg3 Kc8
Schwarz hat nicht rochiert und KBP = 18.0. (2023-06-20)
comment
Keywords: Unique Proof Game
Genre: Retro
FEN: 2k1r1Bq/ppp1p3/2n1b2n/2Qp4/R2P1B2/4PrPN/PbP2PP1/6RK
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2012-04-15 more...
Genre: Retro
FEN: 2k1r1Bq/ppp1p3/2n1b2n/2Qp4/R2P1B2/4PrPN/PbP2PP1/6RK
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2012-04-15 more...
1. d3 Sf6 2. Lh6 gxh6 3. g4 Lg7 4. g5 Sg4 5. g6 Lc3 6. bxc3 0-0 7. g7 h5 8. gxf8=L Kh8 9. Lh6 Dg8 10. Le3 Dg5 11. Lxa7 Dc5 12. Lb6 Ta6 13. La5 Tg6 14. Lb4 Tg8 15. La3 Tf8 16. Lc1 Kg8
Henrik Juel: Natch 3.1 produced nothing in more than 3 hours (2018-12-12)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 01:02:15 Stunden.
Keine Lösung: BP 15.0, BP 15.5. Notation OK. (2023-02-18)
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Moldenhauer: Computerprüfung: C+ Stelvio 1.0 01:02:15 Stunden.
Keine Lösung: BP 15.0, BP 15.5. Notation OK. (2023-02-18)
comment
Keywords: Unique Proof Game, Promotion (L), Castling, Pronkin Theme
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1nb2rk1/1ppppp1p/8/2q4p/6n1/2PP4/P1P1PP1P/RNBQKBNR
Input: Gerd Wilts, 2000-08-01
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1nb2rk1/1ppppp1p/8/2q4p/6n1/2PP4/P1P1PP1P/RNBQKBNR
Input: Gerd Wilts, 2000-08-01
Last update: Silvio Baier, 2023-03-02 more...
6 - P1000543
Thierry Le Gleuher
P0008v StrateGems Vol.1 10-12/1998
3. ehrende Erwähnung
(14+15) C+
BP in 21,5
Thierry Le Gleuher
P0008v StrateGems Vol.1 10-12/1998
3. ehrende Erwähnung
(14+15) C+
BP in 21,5
1. a4 f5 2. a5 Sf6 3. a6 bxa6 4. Ta3 Lb7 5. Tg3 Lf3 6. d3 Sc6 7. Lf4 Tb8 8. Ld6 exd6 9. gxf3 De7 10. Lh3 Df7 11. Lg4 Le7 12. Lh5 Ld8 13. Lg6 h5 14. Lh7 Da2 15. Lg8 Tb3 16. Lc4 d5 17. Dd2 Kf7 18. Db4 Te8 19. Db8 Te3 20. Lb5 Se5 21. Lc6 Se4 22. Lb7
Lange, 10zügige Wanderung des wLf1.
Lange, 10zügige Wanderung des wLf1.
Henrik Juel: Natch 3.1 did absolutely nothing in an hour (2018-12-12)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 07:04:17 Stunden. (hh:mm:ss)
Keine Lösung: BP 20.5, BP 21.0. (2023-03-16)
comment
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 07:04:17 Stunden. (hh:mm:ss)
Keine Lösung: BP 20.5, BP 21.0. (2023-03-16)
comment
Keywords: Unique Proof Game, Promenade (L)
Genre: Retro
Computer test: Stelvio 1.11
FEN: 1Q1b4/pBpp1kp1/p7/3pnp1p/4n3/1r1PrPR1/qPP1PP1P/1N2K1NR
Input: Gerd Wilts, 2000-08-01
Last update: Silvio Baier, 2023-03-20 more...
Genre: Retro
Computer test: Stelvio 1.11
FEN: 1Q1b4/pBpp1kp1/p7/3pnp1p/4n3/1r1PrPR1/qPP1PP1P/1N2K1NR
Input: Gerd Wilts, 2000-08-01
Last update: Silvio Baier, 2023-03-20 more...
7 - P1000563
Michel Caillaud
Noam Livnat
P0019 StrateGems Vol.1 10-12/1998
3. Preis
(16+15) cooked
BP in 21,5
Michel Caillaud
Noam Livnat
P0019 StrateGems Vol.1 10-12/1998
3. Preis
(16+15) cooked
BP in 21,5
1. c4 b5 2. Da4 b4 3. Db5 g6 4. a4 Lg7 5. Ta3 Kf8 6. Td3 d6 7. Txd6 a6 8. d3 Ta7 9. Lf4 Tb7 10. Le5 Tb6 11. f4 Tc6 12. Kf2 Tc5 13. Kg3 Td5 14. Kh4 Td4 15. g3 Te4 16. Lh3 Te3 17. Lg4 Tf3 18. Sh3 Tf2 19. Tf1 Tg2 20. Tf3 Tg1 21. Te3 Th1 22. Te4
Treppenturm
Cook: Dual
7. ... Sa6 8. d3 Tb8 9. Lf4 Tb6 10. Le5 Tc6 11. f4 Tc5 12. Kf2 Td5 13. Kg3 Td4 14. Kh4 Te4 15. g3 Te3 16. Lh3 Tf3 17. Lg4 Tf1 18. Sh3 Te1 19. Tf1 Sb8 20. Tf3 Th1 21. Te3 a6 22. Te4 (Henrik Juel)
Treppenturm
Cook: Dual
7. ... Sa6 8. d3 Tb8 9. Lf4 Tb6 10. Le5 Tc6 11. f4 Tc5 12. Kf2 Td5 13. Kg3 Td4 14. Kh4 Te4 15. g3 Te3 16. Lh3 Tf3 17. Lg4 Tf1 18. Sh3 Te1 19. Tf1 Sb8 20. Tf3 Th1 21. Te3 a6 22. Te4 (Henrik Juel)
A.Buchanan: the authors fixed this in 1998 C+ with 1sbq1ksr/2p1ppbp/p2R2p1/1Q2B3/PpP1BP1K/3P1SP1/1P2P2P/R4S1r
16. Lg2 Te3 17. Le4 Tf3 18. Sd2 Tf2 19. Sgf3 Tg2 20. Ta1 Tg1 21. Sf1 Th1 (2023-02-04)
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16. Lg2 Te3 17. Le4 Tf3 18. Sd2 Tf2 19. Sgf3 Tg2 20. Ta1 Tg1 21. Sf1 Th1 (2023-02-04)
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Keywords: Unique Proof Game, Staircase (t)
Genre: Retro
FEN: 1nbq1knr/2p1ppbp/p2R2p1/1Q2B3/PpP1RPBK/3P2PN/1P2P2P/1N5r
Reprints: feenschach 153, p. 195, 10-12/2003
H30 FIDE Album Annexe 1998-2000 2009
Input: Gerd Wilts, 2000-08-01
Last update: Alfred Pfeiffer, 2018-12-19 more...
Genre: Retro
FEN: 1nbq1knr/2p1ppbp/p2R2p1/1Q2B3/PpP1RPBK/3P2PN/1P2P2P/1N5r
Reprints: feenschach 153, p. 195, 10-12/2003
H30 FIDE Album Annexe 1998-2000 2009
Input: Gerd Wilts, 2000-08-01
Last update: Alfred Pfeiffer, 2018-12-19 more...
1. Sc3 Sf6 2. Se4 Sd5 3. Sf6 gxf6 4. h4 Lh6 5. Th3 Kf8 6. Tb3 Kg7 7. Tb6 Dg8 8. b4 Kf8 9. Lb2 Dg3 10. Le5 Db3 11. axb3 a6 12. Ta5 Ta7 13. Tab5 a5 14. e3 a4 15. Le2 a3 16. Lh5 a2 17. Dg4 a1=D+ 18. Ke2 Dd4 19. De6 Dg4+ 20. Kd3 Dg8 21. g4 Kg7 22. g5 Dd8 23. g6 Kf8 24. g7+ Ke8 25. g8=S Lf8 26. Sh6
Pronkin-Thema mit der eingeschlossenen sD. Ein sS könnte a1 nicht mehr verlassen. Ein sT könnte h8 nicht mehr erreichen, und von a8 kann kein sT auf b3 geschlagen werden, da dazu der sBa7 zuerst nach a5 müsste und damit der wTa1 nicht mehr ohne Schlag des sBa nach b5 kann.
Pronkin-Thema mit der eingeschlossenen sD. Ein sS könnte a1 nicht mehr verlassen. Ein sT könnte h8 nicht mehr erreichen, und von a8 kann kein sT auf b3 geschlagen werden, da dazu der sBa7 zuerst nach a5 müsste und damit der wTa1 nicht mehr ohne Schlag des sBa nach b5 kann.
paul: Correction of P1000530 (2010-05-05)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 19:31:47 Stunden.
Keine Lösung: BP 24.5, BP 25.0. (2023-02-15)
comment
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 19:31:47 Stunden.
Keine Lösung: BP 24.5, BP 25.0. (2023-02-15)
comment
Keywords: Unique Proof Game, Phoenix (S), Pronkin Theme (d), Pure Round Trip (k), Tempo Loss (b1)
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1nbqkb1r/rppppp1p/1R2Qp1N/1R1nB2B/1P5P/1P1KP3/2PP1P2/6N1
Reprints: H33 FIDE Album Annexe 1998-2000 2009
Input: Gerd Wilts, 2000-10-15
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1nbqkb1r/rppppp1p/1R2Qp1N/1R1nB2B/1P5P/1P1KP3/2PP1P2/6N1
Reprints: H33 FIDE Album Annexe 1998-2000 2009
Input: Gerd Wilts, 2000-10-15
Last update: Silvio Baier, 2023-03-02 more...
1. d4 c6 2. Dd3 Db6 3. Dg6 Db3 4. axb3 hxg6 5. Ta6 Th3 6. Tb6 Tg3 7. hxg3 axb6 8. Th7 Ta2 9. Lh6 gxh6 10. e3 Lg7 11. La6 Le5 12. c4 Ld6 13. Sc3 La3 14. bxa3 Txf2 15. Sge2 d5 16. Kd2 Lh3 17. gxh3 bxa6
4mal Überkreuzschlag (wBBa2b2 und g2h2, sBa7b7 und g7h7).
4mal Überkreuzschlag (wBBa2b2 und g2h2, sBa7b7 und g7h7).
paul: The first 16.5 moves are unique (Euclide 0.96) (2010-07-05)
Henrik Juel: Natch 3.1 did not even find the solution in an hour (2018-12-16)
Moldenhauer: Computerprüfung: nachrichtlich C+ Stelvio 1.6 nach ca. 520 Std.
Natch 3.3 hat hier noch einen klaren Vorteil.
Stelvio wird ja weiter verbessert, wie ich bemerkt habe. (2023-10-02)
more ...
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Henrik Juel: Natch 3.1 did not even find the solution in an hour (2018-12-16)
Moldenhauer: Computerprüfung: nachrichtlich C+ Stelvio 1.6 nach ca. 520 Std.
Natch 3.3 hat hier noch einen klaren Vorteil.
Stelvio wird ja weiter verbessert, wie ich bemerkt habe. (2023-10-02)
more ...
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Keywords: Unique Proof Game, Cross-capture (4)
Genre: Retro
Computer test: KP: C+ Natch 3.3 (24 hours 32 min) I stopped Stelvio 1.0 after 93 hours of testing
FEN: 1n2k1n1/4pp1R/ppp3pp/3p4/2PP4/PPN1P1PP/3KNr2/8
Reprints: (89) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 2002-04-05
Last update: A.Buchanan, 2023-03-20 more...
Genre: Retro
Computer test: KP: C+ Natch 3.3 (24 hours 32 min) I stopped Stelvio 1.0 after 93 hours of testing
FEN: 1n2k1n1/4pp1R/ppp3pp/3p4/2PP4/PPN1P1PP/3KNr2/8
Reprints: (89) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 2002-04-05
Last update: A.Buchanan, 2023-03-20 more...
10 - P1003986
Dan Meinking
R0099 StrateGems 18 04-06/2002
5.-7. Preis ex aequo
(15+15) C+
BP in 20,0
Dan Meinking
R0099 StrateGems 18 04-06/2002
5.-7. Preis ex aequo
(15+15) C+
BP in 20,0
1. g4 h5 2. Lg2 Th6 3. Le4 Td6 4. Lh7 g6 5. h4 Lg7 6. Th3 Ld4 7. Ta3 Lb6 8. c3 c5 9. Da4 Dc7 10. Dd4 Dc6 11. Dh8 Dh1 12. f3 f6 13. Kf2 Kf7 14. Sh3 Sh6 15. Dxc8 Dxc1 16. Dc6 Dc2 17. Ke1 Df5 18. De4 Sc6 19. Kd1 Th8 20. Kc1 Ke8
Keywords: Unique Proof Game
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.0 01:37:02 Stunde. Keine Lösung: BP 19.0, BP 19.5.
FEN: 5k1r/pp1pp2B/1bnr1ppn/2p2q1p/4Q1PP/R1P2P1N/PP1PP3/RNK5
Reprints: feenschach 153, p. 209, 10-12/2003
Input: Gerd Wilts, 2002-04-05
Last update: A.Buchanan, 2023-03-01 more...
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.0 01:37:02 Stunde. Keine Lösung: BP 19.0, BP 19.5.
FEN: 5k1r/pp1pp2B/1bnr1ppn/2p2q1p/4Q1PP/R1P2P1N/PP1PP3/RNK5
Reprints: feenschach 153, p. 209, 10-12/2003
Input: Gerd Wilts, 2002-04-05
Last update: A.Buchanan, 2023-03-01 more...
11 - P1004001
Michel Caillaud
R0093 StrateGems 17 01-03/2002
Gianni Donati gewidmet
2.-4. Preis ex aequo
(16+16) C+
BP in 20,5
Michel Caillaud
R0093 StrateGems 17 01-03/2002
Gianni Donati gewidmet
2.-4. Preis ex aequo
(16+16) C+
BP in 20,5
1. Sc3 e5 2. Sd5 Df6 3. Se7 d5 4. e4 Lf5 5. De2 Sd7 6. Da6 Td8 7. De6 Sb6 8. Dc8 Sh6 9. Sc6 Lb4 10. Da8 Lc3 11. Sb8 Td6 12. Lb5+ Kd8 13. Ld7 Tc6 14. Lc8 Tc5 15. Sd7 Dc6 16. Sf6 Te8 17. Sg4 Te6 18. Se3 Tg6 19. Sc4 Tg4 20. Sa3 Lg6 21. Sb1
Spektakuläre Wanderung des wSb1 über e7 nach b8 und zurück zwecks Schachschutz.
Spektakuläre Wanderung des wSb1 über e7 nach b8 und zurück zwecks Schachschutz.
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 33:18 Minuten.
Keine Lösung BP 20.0, BP 19.5.
Bitte Notation richtigstellen: 19.Sc4 Tg5 (2023-02-13)
comment
Keine Lösung BP 20.0, BP 19.5.
Bitte Notation richtigstellen: 19.Sc4 Tg5 (2023-02-13)
comment
Keywords: Unique Proof Game, Promenade (S), Capture-free
Genre: Retro
Computer test: Stelvio 1.0
FEN: Q1Bk4/ppp2ppp/1nq3bn/2rpp1r1/4P3/2b5/PPPP1PPP/RNB1K1NR
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2002-04-05
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: Q1Bk4/ppp2ppp/1nq3bn/2rpp1r1/4P3/2b5/PPPP1PPP/RNB1K1NR
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2002-04-05
Last update: Silvio Baier, 2023-03-02 more...
1. a4 Sc6 2. Ta3 Sd4 3. Tg3 Sb5 4. Tg6 hxg6 5. b3 Th3 6. Lb2 Te3 7. Lf6 e5 8. dxe3 Le7 9.
Dd6 cxd6 10. a5 Dxa5 11. Kd1 b6 12. Sf3 Lb7 13. Sfd2 Lf3 14. gxf3 Ld8 15. Lh3 Lc7 16. Le6
fxe6 17. Kc1 Kf7 18. Td1 Tf8 19. Sf1 De1 20. h4 a5 21. h5 a4 22. h6 a3 23. h7 a2 24. h8=T
a1=T 25. Th2 Ta7 26. Sc3 Sh6 27. Sa2 Kg8
Dd6 cxd6 10. a5 Dxa5 11. Kd1 b6 12. Sf3 Lb7 13. Sfd2 Lf3 14. gxf3 Ld8 15. Lh3 Lc7 16. Le6
fxe6 17. Kc1 Kf7 18. Td1 Tf8 19. Sf1 De1 20. h4 a5 21. h5 a4 22. h6 a3 23. h7 a2 24. h8=T
a1=T 25. Th2 Ta7 26. Sc3 Sh6 27. Sa2 Kg8
Henrik Juel: Natch 3.1 did little in an hour (2018-12-16)
Vladimir Rey: Fix: P0115 StrateGems; 10. a5 Dxa5+ (2023-01-21)
comment
Vladimir Rey: Fix: P0115 StrateGems; 10. a5 Dxa5+ (2023-01-21)
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: Stelvio 1.2, 58min
FEN: 5rk1/r1bp2p1/1p1ppBpn/1n2p3/8/1P2PP2/N1P1PP1R/2KRqN2
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2002-10-05
Last update: Reto, 2023-05-10 more...
Genre: Retro
Computer test: Stelvio 1.2, 58min
FEN: 5rk1/r1bp2p1/1p1ppBpn/1n2p3/8/1P2PP2/N1P1PP1R/2KRqN2
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2002-10-05
Last update: Reto, 2023-05-10 more...
1. d4 Sc6 2. Le3 Se5 3. dxe5 Sf6 4. exf6 a6 5. fxg7 Ta7 6. Lxa7 Tg8 7. Le3 Th8 8. Lg5 Tg8 9. f4 Th8 10. Kf2 Tg8 11. Kg3 Th8 12. Kh4 Tg8 13. g3 Th8 14. Lh3 Tg8 15. Lg4 Th8 16. h3 Tg8 17. Th2 Th8 18. Tf2 Tg8 19. Tf3 Th8 20. Ta3 Tg8 21. Ta5 Th8 22. a4 Tg8 23. Ta3 Th8 24. Tc3 Tg8 25. Tcc5 Th8 26. c4 Tg8 27. Sc3 Th8
Henrik Juel: Natch 3.1 produced nothing in half an hour (2018-12-16)
Moldenhauer: Computerprüfung: C+ Stevio 1.11 1 Sekunde.
Keine Lösung: BP 26.0, BP 26.5. (2023-03-30)
comment
Moldenhauer: Computerprüfung: C+ Stevio 1.11 1 Sekunde.
Keine Lösung: BP 26.0, BP 26.5. (2023-03-30)
comment
Keywords: Unique Proof Game, Pendulum (t x22)
Genre: Retro
Computer test: Stelvio 1.2, 1sec
FEN: 2bqkb1r/1pppppPp/p7/R1R3B1/P1P2PBK/2N3PP/1P2P3/3Q2N1
Input: Gerd Wilts, 2002-10-05
Last update: Reto, 2023-05-19 more...
Genre: Retro
Computer test: Stelvio 1.2, 1sec
FEN: 2bqkb1r/1pppppPp/p7/R1R3B1/P1P2PBK/2N3PP/1P2P3/3Q2N1
Input: Gerd Wilts, 2002-10-05
Last update: Reto, 2023-05-19 more...
14 - P1004214
Gianni Donati
R0100c StrateGems 20 10-12/2002
5.-7. Preis ex aequo
(11+15) C+
BP in 22,5
Gianni Donati
R0100c StrateGems 20 10-12/2002
5.-7. Preis ex aequo
(11+15) C+
BP in 22,5
1. Sf3 e5 2. Sd4 exd4 3. Sc3 dxc3 4. dxc3 g6 5. Le3 Lh6 6. Lb6 axb6 7. Dd4 Ta5 8. Td1 Lc1 9. Td3 Tg5 10. Tf3 d5 11. Tf6 Lg4 12. Td6 Lxe2 13. Td7 La6 14. Lb5 h5 15. Lc6 Sxc6 16. a4 Db8 17. Te7+ Kd8 18. Te4 h4 19. De5 h3 20. Tb4 Th4 21. Tb3 Sb4 22. Ta3 c6 23. Ta1
wTa1 wandert nach d7 zum Schachschutz für den wLf1. 12zügier Rundlauf des wTa1.
wTa1 wandert nach d7 zum Schachschutz für den wLf1. 12zügier Rundlauf des wTa1.
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 5 Sekunden.
Keine Lösung: BP 21.5, BP 22.0. (2023-02-18)
more ...
comment
Keine Lösung: BP 21.5, BP 22.0. (2023-02-18)
more ...
comment
Keywords: Unique Proof Game, Pure Round Trip (T), Check Protection
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1q1k2n1/1p3p2/bpp3p1/3pQ1r1/Pn5r/2P4p/1PP2PPP/R1b1K2R
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2002-10-05
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1q1k2n1/1p3p2/bpp3p1/3pQ1r1/Pn5r/2P4p/1PP2PPP/R1b1K2R
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2002-10-05
Last update: Silvio Baier, 2023-03-02 more...
15 - P1004372
Dan Meinking
Kostas Prentos
P0118 StrateGems 21 01-03/2003
Spezialpreis
(11+13) C+
BP in 17,5
Dan Meinking
Kostas Prentos
P0118 StrateGems 21 01-03/2003
Spezialpreis
(11+13) C+
BP in 17,5
1. h4 b6 2. h5 La6 3. h6 Ld3 4. hxg7 h5 5. gxf8=S Th7 6. Se6 fxe6 7. Sc3 Kf7 8. Sd5 exd5 9. Th4 Ke6 10. Tc4 dxc4 11. c3 Kd5 12. Db3 cxb3 13. a3 Kc4 14. Ta2 bxa2 15. exd3 Kb3 16. Le2 a1=L 17. Ld1 Ka2 18. b3
Der schwarze K verfolgt den sBf7.
Der schwarze K verfolgt den sBf7.
Kostas Prentos: This version is cooked: 1. h4 g5 2. hxg5 b6 3. Th5 La6 4. b3 Ld3 5. exd3 Lg7 6. Df3 Lxa1 7. Dxf7+ Kxf7 8. Le2 Ke6 9. Ld1 Kd5 10. Lb2 Kc5 11. Ld4 Kb4 12. Sc3 Ka3 13. g6 Kb2 14. a3 hxg6 15. Sa2+ Kxa2 16. Lb2 Th7 17. Lc1 gxh5 18. c3
A correction was published in StrateGems, 2018 (No.82/Pg.92, P0118v): PG 17,5:
1. h4 b6 2. h5 Lb7 3. h6 Lf3 4. hxg7 Sc6 5. gxf8=S Tb8 6. Se6 fxe6 7. Th5 Kf7 8. Td5 exd5 9. exf3 Ke6 10. Lc4 dxc4 11. c3 Kd5 12. Db3 cxb3 13. a3 Kc4 14. Ta2 bxa2 15. Ke2 Kb3 16. Kd3 a1=L 17. Se2 Ka2 18. b3 (C+) (2022-12-08)
more ...
comment
A correction was published in StrateGems, 2018 (No.82/Pg.92, P0118v): PG 17,5:
1. h4 b6 2. h5 Lb7 3. h6 Lf3 4. hxg7 Sc6 5. gxf8=S Tb8 6. Se6 fxe6 7. Th5 Kf7 8. Td5 exd5 9. exf3 Ke6 10. Lc4 dxc4 11. c3 Kd5 12. Db3 cxb3 13. a3 Kc4 14. Ta2 bxa2 15. Ke2 Kb3 16. Kd3 a1=L 17. Se2 Ka2 18. b3 (C+) (2022-12-08)
more ...
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: Natch 3.1
FEN: rn1q2n1/p1ppp2r/1p6/7p/8/PPPP4/k2P1PP1/b1BBK1N1
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2003-01-02
Last update: James Malcom, 2020-11-14 more...
Genre: Retro
Computer test: Natch 3.1
FEN: rn1q2n1/p1ppp2r/1p6/7p/8/PPPP4/k2P1PP1/b1BBK1N1
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2003-01-02
Last update: James Malcom, 2020-11-14 more...
1. h4 Sc6 2. h5 Sd4 3. h6 Sb5 4. hxg7 h5 5. Th3 h4 6. Tg3 h3 7. a4 h2 8. a5 h1=D 9. a6 Dh2 10. axb7 a5 11. bxa8=T Lb7 12. Ta4 Lc6 13. Th4 a4 14. d4 a3 15. d5 a2 16. d6 a1=S 17. dxc7 Sb3 18. Ta1 Sa3 19. c8=T La4 20. Ta8 Db8 21. f4 Kd8 22. f5 Kc7 23. f6 Kb6 24. fxe7 Sf6 25. e8=T Ld6 26. Tc8 Te8 27. g8=T Te7 28. Tge8 Lc7 29. Tgg8 Dd6 30. Th1
Zyklischer Platzwechsel sechs weißer Türme.
Zyklischer Platzwechsel sechs weißer Türme.
Keywords: Unique Proof Game, Non-standard material, Interchange (TTTTTT), Impostor (TT)
Genre: Retro
Computer test: Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:05:59 Minuten. (hh:mm:ss) keine Lösung: BP 28.5, BP 29.0.
FEN: RqR1R1R1/2bprp2/1k1q1n2/8/b7/nn6/1PP1P1P1/RNBQKBNR
Reprints: (18) StrateGems 10-12/2007
(80) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 2004-10-17
Last update: Silvio Baier, 2023-08-15 more...
Genre: Retro
Computer test: Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:05:59 Minuten. (hh:mm:ss) keine Lösung: BP 28.5, BP 29.0.
FEN: RqR1R1R1/2bprp2/1k1q1n2/8/b7/nn6/1PP1P1P1/RNBQKBNR
Reprints: (18) StrateGems 10-12/2007
(80) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 2004-10-17
Last update: Silvio Baier, 2023-08-15 more...
1. c4 h5 2. c5 Th6 3. c6 Txc6 4. a4 Txc1 5. Ta3 c5 6. Tc3 Da5 7. Sa3 Ta1 8. Tc1 Dc3 9. f4 a5 10. f5 Ta6 11. f6 Txf6 12. Sh3 b6 13. Sf4 La6 14. Kf2 Ld3 15. Ke3 Ta2 16. Sd5 Txf1 17. h4 f5 18. Th3 Th1 19. Tf3 Th2 20. Tf1 f4+ 21. Kf2 f3 22. Ta1 Lb1 23. Th1
Rundlauf der beiden wTT.
Rundlauf der beiden wTT.
Henrik Juel: Natch 3.1 made no progress after an hour (2018-12-15)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 3 Sekunden.
Keine Lösung: BP 21.5, BP 22.0. (2023-02-18)
comment
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 3 Sekunden.
Keine Lösung: BP 21.5, BP 22.0. (2023-02-18)
comment
Keywords: Unique Proof Game, Pure Round Trip (TT)
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1n2kbn1/3pp1p1/1p6/p1pN3p/P6P/N1q2p2/rP1PPKPr/Rb1Q3R
Reprints: feenschach 153, p. 201, 10-12/2003
Input: Gerd Wilts, 2005-01-09
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1n2kbn1/3pp1p1/1p6/p1pN3p/P6P/N1q2p2/rP1PPKPr/Rb1Q3R
Reprints: feenschach 153, p. 201, 10-12/2003
Input: Gerd Wilts, 2005-01-09
Last update: Silvio Baier, 2023-03-02 more...
1. f3 c6 2. Kf2 Da5 3. Kg3 Dc3 4. dxc3 h5 5. Dd6 h4+ 6. Kg4 h3 7. Dc7 hxg2 8. Sh3 g1=D 9. Lg2 Db6 10. Dxc8+ Dd8 11. Dc7 Th5 12. Dg3 Db6 13. Td1 Dg1 14. Td6 Td5 15. Le3 g5 16. Sd2 Dxa1 17. Lc5 Dg1 18. La3 Db6 19. De1 Td4+ 20. cxd4 Dd8
Henrik Juel: d2xDc3xTd4 was too tricky for Natch 3.1, which did not find the solution in half an hour
Stopped at pos. 917 (2018-12-22)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 00:08:50 Minuten.
Keine Lösung: BP 19.0, BP 19.5. (2023-03-01)
more ...
comment
Stopped at pos. 917 (2018-12-22)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 00:08:50 Minuten.
Keine Lösung: BP 19.0, BP 19.5. (2023-03-01)
more ...
comment
Keywords: Unique Proof Game, Pronkin Theme (d), Promotion (d)
Genre: Retro
Computer test: Stelvio 1.0
FEN: rn1qkbn1/pp1ppp2/2pR4/6p1/3P2K1/B4P1N/PPPNP1BP/4Q3
Reprints: (6) StrateGems 10-12/2007
Input: Gerd Wilts, 2006-01-22
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: rn1qkbn1/pp1ppp2/2pR4/6p1/3P2K1/B4P1N/PPPNP1BP/4Q3
Reprints: (6) StrateGems 10-12/2007
Input: Gerd Wilts, 2006-01-22
Last update: Silvio Baier, 2023-03-02 more...
19 - P1068641
Michel Caillaud
Moutecidis Fougiaxis Prentos Jubiläumst. 2006
1. Preis
K. Prentos 40 Jahre
(12+12) C+
BP in 19,5
Michel Caillaud
Moutecidis Fougiaxis Prentos Jubiläumst. 2006
1. Preis
K. Prentos 40 Jahre
(12+12) C+
BP in 19,5
1. b4 h5 2. b5 h4 3. b6 Th5 4. bxa7 Sh6 5. axb8=T Taa5 6. d4 Tag5 7. d5 f5 8. d6 Sf7 9. dxe7 d5 10. c4 Kd7 11. e8=T Df6 12. c5 Lxc5 13. a4 Lb6 14. a5 c5 15. a6 Kc7 16. a7 Ld7 17. a8=L Lxe8 18. Ta7 Kxb8 19. Txb7+ Kxa8 20. Tb8+
Keywords: Unique Proof Game, Schnoebelen Theme (TTL), Anti-Pronkin (T), Prentos Theme (TTL), Ceriani-Frolkin Theme (TTL), Promotion (TTL)
Genre: Retro
Computer test: Natch 3.1 (3:58 h)
FEN: kR2b3/5np1/1b3q2/2pp1prr/7p/8/4PPPP/1NBQKBNR
Reprints: (2) StrateGems 10/2007
Input: Gerd Wilts, 2006-12-21
Last update: A.Buchanan, 2021-02-20 more...
Genre: Retro
Computer test: Natch 3.1 (3:58 h)
FEN: kR2b3/5np1/1b3q2/2pp1prr/7p/8/4PPPP/1NBQKBNR
Reprints: (2) StrateGems 10/2007
Input: Gerd Wilts, 2006-12-21
Last update: A.Buchanan, 2021-02-20 more...
1. a4 Sc6 2. a5 Se5 3. a6 bxa6 4. b4 Lb7 5. b5 Db8 6. b6 axb6 7. c4 Da7 8. c5 0-0-0 9. c6 dxc6 10. h4 Txd2 11. Th3 Td7 12. Dd6 cxd6 13. Tg3 Kc7 14. Tg6 hxg6 15. g3 Th5 16. Lh6 gxh6 17. Lh3 Lg7 18. Le6 fxe6 19. f4 Sf7 20. f5 Sh8 21. f6 exf6
Viermal Überkreuzschlag zweier schwarzer Bauern.
Viermal Überkreuzschlag zweier schwarzer Bauern.
Henrik Juel: Natch 3.1 did nothing in an hour
Stopped while searching for pos. 1 (2018-12-27)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:02:40 Minuten. (hh:mm:ss)
Keine Lösung: BP 20.0, BP 20.5. (2023-03-12)
comment
Stopped while searching for pos. 1 (2018-12-27)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:02:40 Minuten. (hh:mm:ss)
Keine Lösung: BP 20.0, BP 20.5. (2023-03-12)
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: Stelvio 1.11
FEN: 6nn/qbkr2b1/pppppppp/7r/7P/6P1/4P3/RN2K1N1
Input: Gerd Wilts, 2009-01-03
Last update: Silvio Baier, 2023-03-20 more...
Genre: Retro
Computer test: Stelvio 1.11
FEN: 6nn/qbkr2b1/pppppppp/7r/7P/6P1/4P3/RN2K1N1
Input: Gerd Wilts, 2009-01-03
Last update: Silvio Baier, 2023-03-20 more...
1. Sc3 f5 2. Sd5 Sf6 3. Sxe7 Sd5 4. Sg6 De7 5. a3 Dxa3 6. e4 d6 7. Se2 Kd7 8. Sc3 Kc6 9. Sb1 Sd7 10. Lb5+ Kxb5 11. e5 Ka4 12. e6 b5 13. e7 S7b6 14. exf8=S Ld7 15. Sxh7 Taf8 16. Sg5 Th4 17. Sh3 Tb4 18. Dg4 Le8 19. Dd4 f4 20. Sg1 Tf5 21. Sf8
Henrik Juel: Cyclical shift by three white knights.
Sf8 is [Sb1], Sb1 is [Sg1], Sg1 is a promotee from f8 (2014-08-20)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 2 Sekunden.
Keine Lösung: BP 19.5, BP 20.0. (2023-03-02)
more ...
comment
Sf8 is [Sb1], Sb1 is [Sg1], Sg1 is a promotee from f8 (2014-08-20)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 2 Sekunden.
Keine Lösung: BP 19.5, BP 20.0. (2023-03-02)
more ...
comment
Keywords: Unique Proof Game, Non-standard material
Genre: Retro
Computer test: Stelvio 1.0
FEN: 4bN2/p1p3p1/1n1p4/1p1n1r2/kr1Q1p2/q7/1PPP1PPP/RNB1K1NR
Reprints: (13) StrateGems 10-12/2007
Input: Gerd Wilts, 2009-01-06
Last update: Silvio Baier, 2023-03-03 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 4bN2/p1p3p1/1n1p4/1p1n1r2/kr1Q1p2/q7/1PPP1PPP/RNB1K1NR
Reprints: (13) StrateGems 10-12/2007
Input: Gerd Wilts, 2009-01-06
Last update: Silvio Baier, 2023-03-03 more...
1. f4 h5 2. f5 h4 3. f6 h3 4. fxe7 hxg2 5. exf8=L Th3 6. Lc5 Tg3 7. Lb6 axb6 8. h4 Taa3 9. h5 Tac3 10. bxc3 Dh4 11. La3 f6 12. Lf8 d6 13. h6 Lf5 14. h7 Ld3 15. exd3 Kf7 16. Df3 Kg6 17. Se2 g1=S 18. h8=T Sh3 19. Th5 Sf4 20. Tb5 Se6 21. Tb2 Db4 22. Th8 Sh6 23. Dg2 Kh5 24. Sc1 g6 25. Lg7 c5 26. Tf8 Sf7 27. Lh8
Henrik Juel: Natch 3.1 did little in half an hour
Stopped at pos. 38 (2018-12-25)
Henrik Juel: Stelvio 1.31 used 18 seconds on my PC (2023-06-13)
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Stopped at pos. 38 (2018-12-25)
Henrik Juel: Stelvio 1.31 used 18 seconds on my PC (2023-06-13)
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Keywords: Anti-Pronkin (TL), Ceriani-Frolkin Theme (L), Unique Proof Game, Non-standard material, Interchange (LT), Promotion (LsT)
Genre: Retro
Computer test: KP: C+ Stelvio 1.0 (14 seconds)
FEN: 1n3R1B/1p3n2/1p1pnpp1/2p4k/1q6/2PP2r1/PRPP2Q1/RNN1KB2
Input: Gerd Wilts, 2009-01-10
Last update: A.Buchanan, 2023-03-20 more...
Genre: Retro
Computer test: KP: C+ Stelvio 1.0 (14 seconds)
FEN: 1n3R1B/1p3n2/1p1pnpp1/2p4k/1q6/2PP2r1/PRPP2Q1/RNN1KB2
Input: Gerd Wilts, 2009-01-10
Last update: A.Buchanan, 2023-03-20 more...
1. e3 a5 2. Dh5 Ta6 3. f3 Tc6 4. Kf2 Tc3 5. bxc3 c6 6. La3 Db6 7. Lxe7 c5 8. Sa3 Dg6 9. Tb1 f5 10. Tb6 Df7 11. Th6 b5 12. Lf6 b4 13. Lb5 Se7 14. Se2 Sg6 15. Ta1 De7 16. Ke1 Dd8
Keywords: Unique Proof Game, Impostor (T)
Genre: Retro
Computer test: Euclide 0.95, Stelvio v1.11
FEN: 1nbqkb1r/3p2pp/5BnR/pBp2p1Q/1p6/N1P1PP2/P1PPN1PP/R3K3
Input: Gerd Wilts, 2009-01-11
Last update: A.Buchanan, 2023-03-13 more...
Genre: Retro
Computer test: Euclide 0.95, Stelvio v1.11
FEN: 1nbqkb1r/3p2pp/5BnR/pBp2p1Q/1p6/N1P1PP2/P1PPN1PP/R3K3
Input: Gerd Wilts, 2009-01-11
Last update: A.Buchanan, 2023-03-13 more...
1. h4 f5 2. h5 Kf7 3. h6 Kg6 4. Sh3 Kh5 5. Sc3 g6 6. Sd5 Lg7 7. Sb4 Lf6 8. Sg1+ Lh4 9. Sf3 Sf6 10. e3 Dg8 11. Ke2 Db3 12. axb3 Tg8 13. Ta6 Tg7 14. Te6 dxe6 15. Sg1 Ld7 16. Kf3 Lb5 17. Le2 Sc6 18. Df1 Td8 19. Ld1 Td3 20. Se2 Sd4+ 21. Kf4 c6 22. exd4 Tg3 23. hxg7 Ld3 24. cxd3 h6 25. Lc2 Sh7 26. Sg1
Silvio Baier: 1.h4 f5 2.h5 Kf7 3.h6 Kg6 4.Sh3 Kh5 5.Sc3 g6 6.Sd5 Bg7 7.Sb4 Lf6 8.Sg1+ Lh4 9.Sf3 Sf6 10.e3 Dg8 11.Ke2 Db3 12.ab Tg8 13.Ta6 Tg7 14.Te6 de 15.Sg1 Ld7 16.Kf3 Lb5 17.Le2 Sc6 18.Df1 Td8 19.Ld1 Td3 20.Se2 Sd4+ 21.Kf4 c6 22.ed Tg3 23.hg Ld3 24.cd h6 25.Lc2 Sh7 26.Sg1
Dreifache Rückkehr des Sg1 (2010-02-16)
Henrik Juel: Natch 3.1 did little in more than an hour
Stopped at pos. 1 (2018-12-25)
Vladimir Rey: Update: 2. Preis (source: feenschach 171 2008) (2022-07-28)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 16:43 Minuten.
Keine Lösung: BP 24.5, 25.0. (2023-02-14)
comment
Dreifache Rückkehr des Sg1 (2010-02-16)
Henrik Juel: Natch 3.1 did little in more than an hour
Stopped at pos. 1 (2018-12-25)
Vladimir Rey: Update: 2. Preis (source: feenschach 171 2008) (2022-07-28)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 16:43 Minuten.
Keine Lösung: BP 24.5, 25.0. (2023-02-14)
comment
Keywords: Unique Proof Game, Switchback (S)
Genre: Retro
Computer test: Stelvio 1.0
FEN: 8/pp2p1Pn/2p1p1pp/5p1k/1N1P1K1b/1P1P2r1/1PBP1PP1/2B2QNR
Reprints: StrateGems 10-12/2007
Input: Gerd Wilts, 2009-01-11
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 8/pp2p1Pn/2p1p1pp/5p1k/1N1P1K1b/1P1P2r1/1PBP1PP1/2B2QNR
Reprints: StrateGems 10-12/2007
Input: Gerd Wilts, 2009-01-11
Last update: Silvio Baier, 2023-03-02 more...
1. c4 d5 2. Da4+ Sd7 3. Dc6 Sgf6 4. a4 Se4 5. Ta3 Sec5 6. Tf3 Sa6 7. d3 Sab8 8. Lh6 gxh6 9. g3 Lg7 10. Lh3 0-0 11. Txf7 Sf6 12. Lxc8 Kh8 13. g4 Sg8
Henrik Juel: C+ by Natch 3.1 (8 s)
No solution in 12.5 (2018-12-27)
A.Buchanan: Good that you are checking for n-0.5. But why not check for n-1.0 & n-1.5: then it is certain that there is no shorter PG. (2018-12-27)
Henrik Juel: Good to hear from you again, Andrew
I started my Christmas testing project a couple of weeks ago
After testing lots of proof games in n, and making sure that n-.5 or n-1 moves had no solution, I noticed that in that sample n-1 moves never produced a solution, so, being a lazy slob, I now only check n-.5
Even your suggestion is not sufficient, as there exist constructed proof games with unique solutions in n and n plus several moves, but with 'regular' problems I believe that checking n-.5 almost always suffices
So far I have found a handful of cooks and just one example of a shorter solution than stipulated (2018-12-27)
A.Buchanan: If there is a solution in n moves, there are many solutions in n+2.0 moves: that is definite.
A reason for mindlessly testing as n-1.5,n-1.0,n-0.5 before testing for n is that one can catch many (but not all) cooks more easily.
From the solution in n, one can then see whether there might be the chance of an interesting solution in n+k, where k is not a multiple of 2.0. (2018-12-28)
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No solution in 12.5 (2018-12-27)
A.Buchanan: Good that you are checking for n-0.5. But why not check for n-1.0 & n-1.5: then it is certain that there is no shorter PG. (2018-12-27)
Henrik Juel: Good to hear from you again, Andrew
I started my Christmas testing project a couple of weeks ago
After testing lots of proof games in n, and making sure that n-.5 or n-1 moves had no solution, I noticed that in that sample n-1 moves never produced a solution, so, being a lazy slob, I now only check n-.5
Even your suggestion is not sufficient, as there exist constructed proof games with unique solutions in n and n plus several moves, but with 'regular' problems I believe that checking n-.5 almost always suffices
So far I have found a handful of cooks and just one example of a shorter solution than stipulated (2018-12-27)
A.Buchanan: If there is a solution in n moves, there are many solutions in n+2.0 moves: that is definite.
A reason for mindlessly testing as n-1.5,n-1.0,n-0.5 before testing for n is that one can catch many (but not all) cooks more easily.
From the solution in n, one can then see whether there might be the chance of an interesting solution in n+k, where k is not a multiple of 2.0. (2018-12-28)
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Keywords: Unique Proof Game, Interchange (ss)
Genre: Retro
FEN: rnBq1rnk/ppp1pRbp/2Q4p/3p4/P1P3P1/3P4/1P2PP1P/1N2K1NR
Input: Gerd Wilts, 2009-04-03
Last update: A.Buchanan, 2023-12-24 more...
Genre: Retro
FEN: rnBq1rnk/ppp1pRbp/2Q4p/3p4/P1P3P1/3P4/1P2PP1P/1N2K1NR
Input: Gerd Wilts, 2009-04-03
Last update: A.Buchanan, 2023-12-24 more...
26 - P1097036
Satoshi Hashimoto
P0262 StrateGems 49 01-03/2010
3. ehrende Erwähnung
(14+14) C+
BP in 24,5
Satoshi Hashimoto
P0262 StrateGems 49 01-03/2010
3. ehrende Erwähnung
(14+14) C+
BP in 24,5
1. Sc3 d5 2. Se4 Lh3 3. Sf6+ exf6 4. c4 Ld6 5. c5 Lf4 6. c6 Dd6 7. cxb7 c5 8. e4 c4 9. e5 c3 10. e6 c2 11. e7 Kd7 12. e8=S Se7 13. Sc7 Tc8 14. Sb5 Tc3 15. Sa3 Kc7 16. Sb1 cxb1=L 17. gxh3 Lf5 18. h4 Lc8 19. h3 Sd7 20. b8=S a5 21. Sc6 Tb8 22. Sd4 Tb4 23. Sc2 Td4 24. Sa3 Db4 25. Sb1
Henrik Juel: Natch 3.1 did little in half an hour
Stopped at pos. 1 (2018-12-28)
Moldenhauer: Computerprüfung: Keine Lösung: BP 23.5, BP 24.0 (2023-04-19)
comment
Stopped at pos. 1 (2018-12-28)
Moldenhauer: Computerprüfung: Keine Lösung: BP 23.5, BP 24.0 (2023-04-19)
comment
Keywords: Unique Proof Game, Pronkin Theme (SSl)
Genre: Retro
Computer test: Stelvio 1.17, 10:05min
FEN: 2b5/2knnppp/5p2/p2p4/1q1r1b1P/2r4P/PP1P1P2/RNBQKBNR
Reprints: (9) Quartz 35 08/2010
60 64 Proof Games 2012
Input: Gerd Wilts, 2009-12-29
Last update: Reto, 2023-04-17 more...
Genre: Retro
Computer test: Stelvio 1.17, 10:05min
FEN: 2b5/2knnppp/5p2/p2p4/1q1r1b1P/2r4P/PP1P1P2/RNBQKBNR
Reprints: (9) Quartz 35 08/2010
60 64 Proof Games 2012
Input: Gerd Wilts, 2009-12-29
Last update: Reto, 2023-04-17 more...
27 - P1100794
Itamar Faybish
StrateGems 50 04-07/2010
für Liza
2. Preis, Good Companions Quick Composing Tourneys, 2010, Beweispartien
(15+14) C+
BP in 21.0
Itamar Faybish
StrateGems 50 04-07/2010
für Liza
2. Preis, Good Companions Quick Composing Tourneys, 2010, Beweispartien
(15+14) C+
BP in 21.0
1. a4 g5 2. Ta3 g4 3. Tc3 g3 4. Tc6 dxc6 5. Sf3 Lh3 6. gxh3 g2 7. Se5 g1=T 8. Sd7 Tg3 9. Lg2 Ta3 10. Ld5 Ta1 11. La2 e6 12. b3 Df6 13. La3 Db2 14. Lb4 f6 15. Sa3 Tb1 16. Sc4 Da3 17. c3 Tb2 18. Dc2 Kf7 19. Kd1 Kg7 20. Kc1 Tb1++ 21. Kxb1 Dc1+
Henrik Juel: Natch 3.1 found the solution at pos. 2, but did not conclude in 6 hours
Stopped at pos. 215 (2018-12-28)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:36:23 Minuten. (hh:mm:ss)
Keine Lösung: BP 20.0, BP 20.5. (2023-03-12)
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Stopped at pos. 215 (2018-12-28)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:36:23 Minuten. (hh:mm:ss)
Keine Lösung: BP 20.0, BP 20.5. (2023-03-12)
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Keywords: Unique Proof Game, Promenade
Genre: Retro
Computer test: Stelvio 1.11
FEN: rn3bnr/pppN2kp/2p1pp2/8/PBN5/1PP4P/B1QPPP1P/1Kq4R
Input: Gerd Wilts, 2010-02-26
Last update: Silvio Baier, 2023-03-20 more...
Genre: Retro
Computer test: Stelvio 1.11
FEN: rn3bnr/pppN2kp/2p1pp2/8/PBN5/1PP4P/B1QPPP1P/1Kq4R
Input: Gerd Wilts, 2010-02-26
Last update: Silvio Baier, 2023-03-20 more...
28 - P1100798
Andrey Frolkin
Kostas Prentos
StrateGems 50 04-06/2010
2. ehrende Erwähnung, Good Companions Quick Composing Tourneys, 2010, Beweispartien
(13+12) C+
BP in 20,0
Andrey Frolkin
Kostas Prentos
StrateGems 50 04-06/2010
2. ehrende Erwähnung, Good Companions Quick Composing Tourneys, 2010, Beweispartien
(13+12) C+
BP in 20,0
1. g4 a5 2. g5 a4 3. g6 Ta5 4. gxh7 Tg5 5. hxg8=S f5 6. Sf6+ exf6 7. Sc3 La3 8. Sd5 0-0 9. Se7+ Kh8 10. Sg8 De7 11. d4 Dc5 12. d5 d6 13. Dd4 Le6 14. dxe6 Sc6 15. e7 Sa5 16. exf8=T Sb3 17. Tf7 Sxa1 18. b3 Lb2 19. Se7 a3 20. Sc6 bxc6
Keywords: Anti-Pronkin (S), Ceriani-Frolkin Theme (S), Unique Proof Game, Promenade
Genre: Retro
Computer test: C+ by Natch 3.1 (7 s) No solution in 19.5 Computerprüfung: C+ Stelvio 2.0 1 Sek.
FEN: 7k/2p2Rp1/2pp1p2/2q2pr1/3Q4/pP6/PbP1PP1P/n1B1KBNR
Input: Gerd Wilts, 2010-02-26
Last update: A.Buchanan, 2024-02-12 more...
Genre: Retro
Computer test: C+ by Natch 3.1 (7 s) No solution in 19.5 Computerprüfung: C+ Stelvio 2.0 1 Sek.
FEN: 7k/2p2Rp1/2pp1p2/2q2pr1/3Q4/pP6/PbP1PP1P/n1B1KBNR
Input: Gerd Wilts, 2010-02-26
Last update: A.Buchanan, 2024-02-12 more...
29 - P1106666
Mario Parrinello
Kostas Prentos
P0265 StrateGems 50 04-06/2010
3. Lob
(13+14) C+
BP in 21,5
Mario Parrinello
Kostas Prentos
P0265 StrateGems 50 04-06/2010
3. Lob
(13+14) C+
BP in 21,5
1. f3 Sc6 2. Kf2 Sd4 3. Kg3 Sxe2+ 4. Kg4 Sg3 5. hxg3 Tb8 6. Th6 Ta8 7. Tb6 axb6 8. De2 Ta5 9. Da6 Ta3 10. bxa3 h6 11. Lb2 Th7 12. Lf6 Th8 13. Sc3 Th7 14. Te1 Th8 15. Te6 dxe6 16. Sge2 Dd3 17. Sd4 Dh7 18. Se4 Kd7 19. Lb5+ Kd8 20. Le8 Ld7 21. c3 Lc8 22. Sc6+
Keywords: Unique Proof Game, Switchback (ttl), Tempo Loss
Genre: Retro
Computer test: C+ by Natch 3.1 (17 s) No solution in 20.5 Computerprüfung: C+ Stelvio 1.6 in 4 Min. Notation ist mit Henriks Änderung richtig!
FEN: 2bkBbnr/1pp1pppq/QpN1pB1p/8/4N1K1/P1P2PP1/P2P2P1/8
Input: Gerd Wilts, 2010-06-03
Last update: A.Buchanan, 2024-02-12 more...
Genre: Retro
Computer test: C+ by Natch 3.1 (17 s) No solution in 20.5 Computerprüfung: C+ Stelvio 1.6 in 4 Min. Notation ist mit Henriks Änderung richtig!
FEN: 2bkBbnr/1pp1pppq/QpN1pB1p/8/4N1K1/P1P2PP1/P2P2P1/8
Input: Gerd Wilts, 2010-06-03
Last update: A.Buchanan, 2024-02-12 more...
30 - P1106668
Gianni Donati
Olli Heimo
Joose Norri
P0267 StrateGems 50 04-06/2010
3. Preis
(13+13) C+
BP in 23,0
Gianni Donati
Olli Heimo
Joose Norri
P0267 StrateGems 50 04-06/2010
3. Preis
(13+13) C+
BP in 23,0
1. a4 a5 2. Ta3 Ta6 3. Tf3 Tg6 4. Tf6 gxf6 5. b4 Lh6 6. b5 Le3 7. f4 La7 8. b6 Sa6 9. bxa7 b6 10. Kf2 Lb7 11. Ke3 Lf3 12. gxf3 Da8 13. Lh3 De4+ 14. fxe4 Sh6 15. Sf3 Tgg8 16. Dg1 Tf8 17. Dg4 Sg8 18. De6 fxe6 19. Tg1 Kf7 20. Tg5 Ta8 21. Td5 exd5 22. Le6+ Ke8 23. f5 Sb8
Henrik Juel: Natch 3.1 did not find the solution in half an hour
Stopped at pos. 12 (2018-12-29)
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Stopped at pos. 12 (2018-12-29)
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Keywords: Unique Proof Game, Pure Round Trip (t), Switchback (kss)
Genre: Retro
Computer test: Stelvio 1.11
FEN: rn2k1nr/P1ppp2p/1p2Bp2/p2p1P2/P3P3/4KN2/2PPP2P/1NB5
Input: Gerd Wilts, 2010-06-03
Last update: A.Buchanan, 2023-07-26 more...
Genre: Retro
Computer test: Stelvio 1.11
FEN: rn2k1nr/P1ppp2p/1p2Bp2/p2p1P2/P3P3/4KN2/2PPP2P/1NB5
Input: Gerd Wilts, 2010-06-03
Last update: A.Buchanan, 2023-07-26 more...
1. Sf3 Sc6 2. Se5 Sd4 3. Sc6 Sxe2 4. Sb8 Sc3 5. dxc3 f6 6. Lh6 gxh6 7. Lc4 Lg7 8. Lf7+ Kf8 9. Dd5 De8 10. Sd2 Dd8 11. 0-0-0 De8 12. The1 Dd8 13. Te6 De8 14. Tb6 axb6 15. Se4 Ta3 16. bxa3 Dd8 17. Kb2 De8 18. Kb3 Dd8 19. Ka4 De8 20. Db3 Dd8 21. Td6 cxd6 22. g4 Dc7 23. g5 Dc5 24. g6 Da5#
Silvio Baier: Wenn nur die Switchbacks der Dame im Vordergrund stünden, gingen auf jeden Fall auch noch 2 mehr, also 14 Tempozüge: 13. Te4 De8 14. Th4 Dd8 15. Se4 De8 16. Td4 Dd8 17. Ta4 De8 18. c4 Dd8 19. c3 De8 20. Kc2 Dd8 21. Kb3 De8 22. Ka3 Dd8 (2023-11-14)
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Keywords: Unique Proof Game, Pendulum (d x10)
Genre: Retro
Computer test: Stelvio 1.11 00:09:11 Minuten. (hh:mm:ss)
FEN: 1Nb2knr/1p1ppBbp/1p1p1pPp/q7/K3N3/PQP5/P1P2P1P/8
Input: Gerd Wilts, 2010-09-28
Last update: James Malcom, 2023-05-02 more...
Genre: Retro
Computer test: Stelvio 1.11 00:09:11 Minuten. (hh:mm:ss)
FEN: 1Nb2knr/1p1ppBbp/1p1p1pPp/q7/K3N3/PQP5/P1P2P1P/8
Input: Gerd Wilts, 2010-09-28
Last update: James Malcom, 2023-05-02 more...
32 - P1214071
Kostas Prentos
Andrey Frolkin
P0315 StrateGems 56 2011
7. ehrende Erwähnung
(15+14) C+
BP in 20,0
b) Schwarz nimmt die Rochade zurück, dann BP in 19,5
Kostas Prentos
Andrey Frolkin
P0315 StrateGems 56 2011
7. ehrende Erwähnung
(15+14) C+
BP in 20,0
b) Schwarz nimmt die Rochade zurück, dann BP in 19,5
a) 1. a4 h5 2. Ta3 h4 3. Tb3 Th5 4. Tb6 axb6 5. g4 Taa5 6. gxh5 Tg5 7. a5 e5 8. a6 Lc5 9. a7 d6 10. a8=T Lg4 11. Ta1 Lf3 12. exf3 e4 13. La6 e3 14. d3 e2 15. Lf4 Kf8 16. Kd2 e1=T 17. Sa3 Te8 18. De2 Se7 19. Td1 Kg8 20. Kc1 Tf8
b) 1. a4 h5 2. Ta3 h4 3. Tb3 Th5 4. Tb6 axb6 5. g4 Taa5 6. gxh5 Tg5 7. a5 e5 8. a6 Lc5 9. a7 d6 10. a8=T Lg4 11. Ta1 Lf3 12. exf3 e4 13. La6 e3 14. d3 e2 15. Lf4 Se7 16. Kd2 e1=T 17. Sa3 Te6 18. De2 Th6 19. Td1 Th8 20. Kc1
b) 1. a4 h5 2. Ta3 h4 3. Tb3 Th5 4. Tb6 axb6 5. g4 Taa5 6. gxh5 Tg5 7. a5 e5 8. a6 Lc5 9. a7 d6 10. a8=T Lg4 11. Ta1 Lf3 12. exf3 e4 13. La6 e3 14. d3 e2 15. Lf4 Se7 16. Kd2 e1=T 17. Sa3 Te6 18. De2 Th6 19. Td1 Th8 20. Kc1
Moldenhauer: Computerprüfung: a) C+ Stelvio 1.0 72 Sekunden.
Keine Lösung: BP 19.0, BP 19.5. (2023-03-02)
Moldenhauer: Computerprüfung: b) C+ Stelvio 1.0 61 Sekunden.
Keine Lösung: BP 18.5, BP 19.0.
FEN b): 1n1qk2r/1pp1npp1/Bp1p4/2b3rP/5B1p/N2P1P2/1PP1QP1P/2KR2NR (2023-03-02)
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Keine Lösung: BP 19.0, BP 19.5. (2023-03-02)
Moldenhauer: Computerprüfung: b) C+ Stelvio 1.0 61 Sekunden.
Keine Lösung: BP 18.5, BP 19.0.
FEN b): 1n1qk2r/1pp1npp1/Bp1p4/2b3rP/5B1p/N2P1P2/1PP1QP1P/2KR2NR (2023-03-02)
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Keywords: Unique Proof Game
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1n1q1rk1/1pp1npp1/Bp1p4/2b3rP/5B1p/N2P1P2/1PP1QP1P/2KR2NR
Input: Gerd Wilts, 2011-10-15
Last update: Silvio Baier, 2023-11-14 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1n1q1rk1/1pp1npp1/Bp1p4/2b3rP/5B1p/N2P1P2/1PP1QP1P/2KR2NR
Input: Gerd Wilts, 2011-10-15
Last update: Silvio Baier, 2023-11-14 more...
1. c4 Sh6 2. c5 Sf5 3. c6 Sxc6 4. b4 Scd4 5. b5 c5 6. b6 Dxb6 7. h4 Kd8 8. h5 Kc7 9. h6 Dxh6 10. a4 b5 11. a5 b4 12. a6 Lxa6 13. e4 Lxf1 14. g4 a5 15. g5 Ta6 16. g6 Txg6 17. f4 Kb6 18. Sf3 Tg1 19. e5 g6 20. e6 Sxe6 21. d4 Lg7 22. d5 Ta8 23. d6 Sxd6 24. f5 Sf8 25. f6 Lxf6
Henrik Juel: Natch 3.1 did nothing in half an hour
Stopped while searching for pos. 1 (2018-12-30)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 2 Sekunden!
Keine Lösung: BP 24.0, BP 24.5. (2023-02-14)
comment
Stopped while searching for pos. 1 (2018-12-30)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 2 Sekunden!
Keine Lösung: BP 24.0, BP 24.5. (2023-02-14)
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: Stelvio 1.0
FEN: r4n2/3ppp1p/1k1n1bpq/p1p5/1p6/5N2/8/RNBQKbrR
Reprints: 62 64 Proof Games 2012
Input: Gerd Wilts, 2012-10-03
Last update: Silvio Baier, 2023-03-02 more...
Genre: Retro
Computer test: Stelvio 1.0
FEN: r4n2/3ppp1p/1k1n1bpq/p1p5/1p6/5N2/8/RNBQKbrR
Reprints: 62 64 Proof Games 2012
Input: Gerd Wilts, 2012-10-03
Last update: Silvio Baier, 2023-03-02 more...
1. h4 a5 2. Th3 a4 3. Tb3 axb3 4. axb3 e5 5. Ta6 Lc5 6. Tf6 Ta1 7. Sc3 Txc1 8. g3 Ta1 9. Lh3 Ta8 10. Da1 d6 11. Kd1 Sd7 12. Kc1 Tb8 13. Da8 La7 14. Sa2 b6 15. Dh1 Ta8 16. Sf3 Sb8 17. Dd1
Henrik Juel: Beautiful roundtrip by Dd1.
C? by Euclide, meaning that I stopped after a couple of hours without progress (2012-12-23)
Henrik Juel: Natch 3.1 was no better (2018-12-13)
Moldenhauer: Computerprüfung: C+ Euclide 1.11 in 41 Min. 35 Sek. nur 1 Lösung!
Keine Lösung bei BP in 15.5. Nach 10 Jahren doch gelöst mit Euclide. (2023-01-19)
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C? by Euclide, meaning that I stopped after a couple of hours without progress (2012-12-23)
Henrik Juel: Natch 3.1 was no better (2018-12-13)
Moldenhauer: Computerprüfung: C+ Euclide 1.11 in 41 Min. 35 Sek. nur 1 Lösung!
Keine Lösung bei BP in 15.5. Nach 10 Jahren doch gelöst mit Euclide. (2023-01-19)
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Keywords: Unique Proof Game, Pure Round Trip (D)
Genre: Retro
Computer test: Stelvio 1.17, 35sec
FEN: rnbqk1nr/b1p2ppp/1p1p1R2/4p3/7P/1P3NPB/NPPPPP2/2KQ4
Reprints: 5 64 Proof Games 2012
Input: Gerd Wilts, 2012-12-23
Last update: Reto, 2023-04-17 more...
Genre: Retro
Computer test: Stelvio 1.17, 35sec
FEN: rnbqk1nr/b1p2ppp/1p1p1R2/4p3/7P/1P3NPB/NPPPPP2/2KQ4
Reprints: 5 64 Proof Games 2012
Input: Gerd Wilts, 2012-12-23
Last update: Reto, 2023-04-17 more...
1. f3 h5 2. Kf2 Th6 3. Kg3 h4+ 4. Kg4 h3 5. Sxh3 Te6 6. Sf2 d5 7. h4 d4 8. h5 d3 9. h6 dxc2 10. Th5 Dd3 11. Tb5 Dc3 12. dxc3 a6 13. Lg5 axb5 14. Lf6 exf6 15. e3 Ld6 16. Lc4 Kd7 17. Dd3 Te8 18. Sd2 Se7 19. Th1 Th8 20. Th5 Sg8 21. Tc5 Ke8+ 22. Df5 Lf8
PR R.MacCracken: A well-concealed bR Rundlauf for screening with K/B/S switchbacks to let it come back home. The final position is appealing to a solver - Black looks like he has hardly moved, and yet it is not an obvious promotion-themed problem.
Henrik Juel: Natch 3.1 did little in half an hour
Stopped at pos. 1 (2018-12-30)
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Henrik Juel: Natch 3.1 did little in half an hour
Stopped at pos. 1 (2018-12-30)
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Keywords: Unique Proof Game, Pure Round Trip (t), Switchback (kls)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.0 00:04:01 Minuten. (hh:mm:ss) Keine Lösung: BP 21.0, BP 21.5.
FEN: rnb1kbnr/1pp2pp1/5p1P/1pR2Q2/2B3K1/2P1PP2/PPpN1NP1/8
Input: Mario Richter, 2014-10-08
Last update: A.Buchanan, 2023-03-10 more...
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.0 00:04:01 Minuten. (hh:mm:ss) Keine Lösung: BP 21.0, BP 21.5.
FEN: rnb1kbnr/1pp2pp1/5p1P/1pR2Q2/2B3K1/2P1PP2/PPpN1NP1/8
Input: Mario Richter, 2014-10-08
Last update: A.Buchanan, 2023-03-10 more...
1. Sf3 d5 2. Se5 Lg4 3. Sd7 Lf3 4. gxf3 c5 5. Lh3 Da5 6. Lf5 Da3 7. Ld3 a5 8. Lb5 a4 9. Lc6 Sxc6 10. 0-0 0-0-0 11. Sf6 Td6 12. Kh1 Txf6 13. Tg1 e6 14. Tg6 Le7 15. Th6 Sxh6 16. Dg1 Td8 17. Dg3 Td7 18. Dd6 Ld8 19. Df8 Se7 20. Dg8 Sexg8
PR R.MacCracken: A Meinking favorite theme: White has to sacrifice his missing pieces by thrusting them into the gears of Black's machine at just the right moment, when a black piece happens to be going to the right square. While solving, I enjoyed picking out the routes of the wB and wQ in particular. What a great way to remember our friend, Dan.
Henrik Juel: Natch 3.1 did not find the solution in an hour
Stopped at pos. 5522 (2018-12-30)
Henrik Juel: correction:
C+ by Natch 3.1 (1:06 h)
No solution in 19.5 (2018-12-30)
Reto: Stelvio 1.22, 7:30min (2023-05-18)
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Henrik Juel: Natch 3.1 did not find the solution in an hour
Stopped at pos. 5522 (2018-12-30)
Henrik Juel: correction:
C+ by Natch 3.1 (1:06 h)
No solution in 19.5 (2018-12-30)
Reto: Stelvio 1.22, 7:30min (2023-05-18)
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Keywords: Unique Proof Game
Genre: Retro
Computer test: Stelvio 1.22, 7:30min
FEN: 2kb2n1/1p1r1ppp/4pr1n/2pp4/p7/q4P2/PPPPPP1P/RNB4K
Input: Mario Richter, 2014-10-08
Last update: Reto, 2023-05-18 more...
Genre: Retro
Computer test: Stelvio 1.22, 7:30min
FEN: 2kb2n1/1p1r1ppp/4pr1n/2pp4/p7/q4P2/PPPPPP1P/RNB4K
Input: Mario Richter, 2014-10-08
Last update: Reto, 2023-05-18 more...
37 - P1349332
Yoav Ben-Zvi
P0360 StrateGems SG63 07/2013
after Kay Soltsien & Hans Heinrich Schmitz,
Die Schwalbe 1960
(16+16) C+
PG in 26.0
Yoav Ben-Zvi
P0360 StrateGems SG63 07/2013
after Kay Soltsien & Hans Heinrich Schmitz,
Die Schwalbe 1960
(16+16) C+
PG in 26.0
1. c4 c5 2. Db3 Db6 3. Dh3 Dh6 4. b3 b6 5. La3 La6 6. Lb4 Lb5 7. Sa3 Sa6 8. 0-0-0 0-0-0 9. Kb2 Kb8 10. Tc1 Tc8 11. Tc3 Tc6 12. Tg3 Tg6 13. Tg4 e6 14. g3 Le7 15. Lg2 Lg5 16. Le4 Se7 17. Sf3 Tc8 18. Tc1 Tc6 19. Tc3 Td6 20. Te3 Td3 21. Dg2 Tc3 22. h3 Tc1 23. Tc3 Ta1 24. Lb1 Kc8 25. Sc2 Sb8 26. Ka3 a6
Zur Aufgabe von K. Soltsien & H. H. Schmitz siehe P1013024
Zur Aufgabe von K. Soltsien & H. H. Schmitz siehe P1013024
Henrik Juel: Nice capture-free proof game with several back-tracking moves and partially symmetrical play
Yoav Ben-Zvi: The primary thematic content lies in Turton doubling: 20.Rc3-e3 (WR crosses d3 for [BRh8]) with Switchback 22.Rc3-e3 and Bristol clearance: 8...0-0-0, 9...Kc8-b8 (BK crosses c8 for [BRh8]) with Switchback 24...Kb8-c8.
The main motivation for composing this problem is as a challenge for solving software in a capture-free game (essentially a piece-shuffle). (2018-04-24)
Henrik Juel: It was a challenge for my patience, at least
Natch 3.1 did not find the solution in an hour
Stopped at pos. 1 (2018-12-31)
ras@bsiag.com: Challenge accepted! Stelvio 0.94 can solve this in about 3h. It is C+. Admittedly, I threw a lot of hardware at it (but without parallelizing). I'm sure the solving time will be reduced considerably in the future. (2022-12-12)
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Yoav Ben-Zvi: The primary thematic content lies in Turton doubling: 20.Rc3-e3 (WR crosses d3 for [BRh8]) with Switchback 22.Rc3-e3 and Bristol clearance: 8...0-0-0, 9...Kc8-b8 (BK crosses c8 for [BRh8]) with Switchback 24...Kb8-c8.
The main motivation for composing this problem is as a challenge for solving software in a capture-free game (essentially a piece-shuffle). (2018-04-24)
Henrik Juel: It was a challenge for my patience, at least
Natch 3.1 did not find the solution in an hour
Stopped at pos. 1 (2018-12-31)
ras@bsiag.com: Challenge accepted! Stelvio 0.94 can solve this in about 3h. It is C+. Admittedly, I threw a lot of hardware at it (but without parallelizing). I'm sure the solving time will be reduced considerably in the future. (2022-12-12)
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Keywords: Turton, Bristol, Switchback (Tks), Unique Proof Game, Capture-free
Genre: Retro
Computer test: Stelvio 2.2, 15min (on my notebook)
FEN: 1nk5/3pnppp/pp2p1rq/1bp3b1/1BP3R1/KPR2NPP/P1NPPPQ1/rB6
Input: Yoav Ben-Zvi, 2018-04-21
Last update: Reto, 2024-04-03 more...
Genre: Retro
Computer test: Stelvio 2.2, 15min (on my notebook)
FEN: 1nk5/3pnppp/pp2p1rq/1bp3b1/1BP3R1/KPR2NPP/P1NPPPQ1/rB6
Input: Yoav Ben-Zvi, 2018-04-21
Last update: Reto, 2024-04-03 more...
38 - P1357876
Kostas Prentos
Andrey Frolkin
P0462v StrateGems 84 10-12/2018
(13+11)
KBP 18.5
Provokateure
Kostas Prentos
Andrey Frolkin
P0462v StrateGems 84 10-12/2018
(13+11)
KBP 18.5
Provokateure
'Quartz' (P. Raican): "The proof game is a correction of one published in Problemaz, December 2008, which was the last issue of this interesting chess magazine, edited by Abdelaziz Onkoud. The authors recently demolished the original problem with Jacobi. Lecturers are invited to solve this PG, even with the help of Labelle's program. After 10 years, the cook-hunters are now able to verify, even partially, the problems collected in this article, using the remarkable program Jacobi."
(mri: A small remark: 10 years ago it was already possible to "verify, even partially" at least some of the "Provocateur" PGs using 'rawbats').
Kostas Prentos: Solution:
1. h4 a5 2. h5 a4 3. h6 a3 4. hxg7 axb2 5. Th6 Ta3 6. Te6 Td3 7. a4 h5 8. a5 h4 9. Ta4 h3 10. Sa3 b1=D 11. Lb2 h2 12. Le5 hxg1=D 13. Lh2 Thh3 14. gxh3 f6 15. Lxg1 Kf7 16. Lg2 Kg6 17. Lc6 bxc6 18. cxd3 Lb7 19. Dxb1
C+ Jacobi v0.4.8 (711046 sec) (2022-12-08)
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(mri: A small remark: 10 years ago it was already possible to "verify, even partially" at least some of the "Provocateur" PGs using 'rawbats').
Kostas Prentos: Solution:
1. h4 a5 2. h5 a4 3. h6 a3 4. hxg7 axb2 5. Th6 Ta3 6. Te6 Td3 7. a4 h5 8. a5 h4 9. Ta4 h3 10. Sa3 b1=D 11. Lb2 h2 12. Le5 hxg1=D 13. Lh2 Thh3 14. gxh3 f6 15. Lxg1 Kf7 16. Lg2 Kg6 17. Lc6 bxc6 18. cxd3 Lb7 19. Dxb1
C+ Jacobi v0.4.8 (711046 sec) (2022-12-08)
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Keywords: Unique Proof Game, Provocateurs
Genre: Retro, Fairies
FEN: 1n1q1bn1/1bppp1P1/2p1Rpk1/P7/R7/N2P3P/3PPP2/1Q2K1B1
Reprints: P11 Quartz 46, p. 792, 10/2018
Input: Mario Richter, 2018-11-20
Last update: Marcin Banaszek, 2019-08-07 more...
Genre: Retro, Fairies
FEN: 1n1q1bn1/1bppp1P1/2p1Rpk1/P7/R7/N2P3P/3PPP2/1Q2K1B1
Reprints: P11 Quartz 46, p. 792, 10/2018
Input: Mario Richter, 2018-11-20
Last update: Marcin Banaszek, 2019-08-07 more...
1. b3 Sf6 2. Lb2 Sh5 3. Lf6 gxf6 4. Dc1 Lh6 5. Da3 Lf4 6. Da6 bxa6 7. g4 Lb7 8. g5 Lf3 9. g6 c6 10. g7 Da5 11. gxh8=L Df5 12. Lg7 a5 13. Lh6 Sa6 14. Lg5 0-0-0 15. Lh4 Tg8 16. Lg3 Tg5 17. h4 Sg7 18. Th2 Lh5 19. f3 Kc7 20. Lf2 Kd6 21. Ld4 Sc7 22. Lb2 a6 23. Lc1
Vladimir Rey: 1. b3 Sf6 2. Lb2 Sh5 3. Lf6 gxf6 4. Dc1 Lh6 5. Da3 Lf4 6. Da6 bxa6 7. g4 Lb7 8. g5 Lf3 9. g6 c6 10. g7 Da5 11. gxh8=L Df5 12. Lg7 a5 13. Lh6 Sa6 14. Lg5 0-0-0 15. Lh4 Tg8 16. Lg3 Tg5 17. h4 Sg7 18. Th2 Lh5 19. f3 Kc7 20. Lf2 Kd6 21. Ld4 Sc7 22. Lb2 a6 23. Lc1 (2022-07-30)
Henrik Juel: Pronkin theme: [Lc1] is captured on f6, and Lc1 is [Pg2] promoted on h8
The march from h8 to c1 is arduous: g7xTh8=L-g7-h6-g5-h4-g3-f2-d4-b2-c1, with nine moves by promoted L (2022-07-30)
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Henrik Juel: Pronkin theme: [Lc1] is captured on f6, and Lc1 is [Pg2] promoted on h8
The march from h8 to c1 is arduous: g7xTh8=L-g7-h6-g5-h4-g3-f2-d4-b2-c1, with nine moves by promoted L (2022-07-30)
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Keywords: Unique Proof Game, Pronkin Theme (L)
Genre: Retro
Computer test: Computerprüfung: C+ Stevio 1.0 00:01:30 Minute. (hh:mm:ss) Keine Lösung: BP 21.5, BP 22.0.
FEN: 8/2npppnp/p1pk1p2/p4qrb/5b1P/1P3P2/P1PPP2R/RNB1KBN1
Input: fs/hg, 2020-12-30
Last update: A.Buchanan, 2023-03-10 more...
Genre: Retro
Computer test: Computerprüfung: C+ Stevio 1.0 00:01:30 Minute. (hh:mm:ss) Keine Lösung: BP 21.5, BP 22.0.
FEN: 8/2npppnp/p1pk1p2/p4qrb/5b1P/1P3P2/P1PPP2R/RNB1KBN1
Input: fs/hg, 2020-12-30
Last update: A.Buchanan, 2023-03-10 more...
40 - P1386520
Unto Heinonen
P0493v StrateGems 89, p. 36, 01/2020
2. ehrende Erwähnung
(16+16) cooked
BP in 42.5
Unto Heinonen
P0493v StrateGems 89, p. 36, 01/2020
2. ehrende Erwähnung
(16+16) cooked
BP in 42.5
1. h4 a5 2. Th3 Ta6 3. Tf3 Tg6 4. Sh3 Tg3 5. Sf4 Th3 6. g3 Th2 7. Lh3 Sh6 8. Le6 Sf5 9. Lc4 d5 10. Kf1 Th1+ 11. Kg2 Tg1+ 12. Kh3 Kd7 13. Kg4 h5+ 14. Kg5 Th6 15. a4 Tb6 16. Taa3 Kc6 17. Tac3 Tb3 18. Sg6 Ta3 19. b3 Ta2 20. La3 Dd6 21. Lc5 Sd7 22. La7 Sb6 23. Sh8 Kc5 24. La6+ Kb4 25. Tc5 g6 26. Sc3 Lg7 27. Se4 Lc3 28. Da1 Sd4 29. Kh6 Ld7 30. Kg7 Lb5 31. Kf8 Ld3 32. Ke8 Dc6+ 33. Kd8 Sc4 34. Kc8 Ka3 35. Kb8 Lb4 36. Ka8 De8+ 37. Lb8 Sb6+ 38. Ka7 Sa8 39. c4 Sc2 40. Df6 Sa1 41. Db6 Kb2 42. Tf6 Kb1 43. Sc3+
Cook: 1. a4 a5 2. h4 h5 3. Ta3 Sh6 4. Tc3 Sf5 5. Sh3 Sd4 6. Sf4 Th6 7. Thh3 Tg6 8. Thf3 Tg3 9. Sg6 Sb3 10. Sh8 Th3 11. g3 g6 12. Lg2 Lg7 13. Kf1 Ld4 14. Tf6 d6 15. Ld5 Ta6 16. Kg2 Tb6 17. Kf3 Lf5 18. Kf4 Ld3 19. Kg5 Kd7 20. Kh6 Sa1 21. Kg7 Tb3 22. Lc4 Ta3 23. b3 Ta2 24. La3 Kc6 25. Lc5 Sd7 26. La7 Sb6 27. Dh1+ Kc5 28. La6+ Kb4 29. Tc5 Sc4 30. Sc3 Dd7 31. Kf8 Db5 32. Dc6 d5 33. Se4 Ka3 34. Ke8 Kb2 35. Kd8 Kb1 36. Kc8 Lc3 37. Kb8 Lb4 38. Ka8 Th1 39. Lb8 Sb6+ 40. Ka7 Sa8 41. c4 Tg1 42. Db6 De8 43. Sc3+
Cook: 1. a4 a5 2. h4 h5 3. Ta3 Sh6 4. Tc3 Sf5 5. Sh3 Sd4 6. Sf4 Th6 7. Thh3 Tg6 8. Thf3 Tg3 9. Sg6 Sb3 10. Sh8 Th3 11. g3 g6 12. Lg2 Lg7 13. Kf1 Ld4 14. Tf6 d6 15. Ld5 Ta6 16. Kg2 Tb6 17. Kf3 Lf5 18. Kf4 Ld3 19. Kg5 Kd7 20. Kh6 Sa1 21. Kg7 Tb3 22. Lc4 Ta3 23. b3 Ta2 24. La3 Kc6 25. Lc5 Sd7 26. La7 Sb6 27. Dh1+ Kc5 28. La6+ Kb4 29. Tc5 Sc4 30. Sc3 Dd7 31. Kf8 Db5 32. Dc6 d5 33. Se4 Ka3 34. Ke8 Kb2 35. Kd8 Kb1 36. Kc8 Lc3 37. Kb8 Lb4 38. Ka8 Th1 39. Lb8 Sb6+ 40. Ka7 Sa8 41. c4 Tg1 42. Db6 De8 43. Sc3+
Korrektur zu P0002554
James Malcom: Correction of P0002554 (2021-02-15)
paul: 2nd Honorable Mention (SG98, 2022) (2022-08-20)
A.Buchanan: Cooked by Boris Tummes (2022-12-27)
Teppo Mänttä: A substitute version: white Db6 to g7, Tf6 to b6, Sc3 to e4; black Kb1 to b2; BP in 41.5 moves. Unto Heinonen, Tehtäväniekka No. 5, December 2022. (2022-12-29)
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James Malcom: Correction of P0002554 (2021-02-15)
paul: 2nd Honorable Mention (SG98, 2022) (2022-08-20)
A.Buchanan: Cooked by Boris Tummes (2022-12-27)
Teppo Mänttä: A substitute version: white Db6 to g7, Tf6 to b6, Sc3 to e4; black Kb1 to b2; BP in 41.5 moves. Unto Heinonen, Tehtäväniekka No. 5, December 2022. (2022-12-29)
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Keywords: Unique Proof Game, Capture-free, Move Length Record
Genre: Retro
FEN: nB2q2N/Kpp1pp2/BQ3Rp1/p1Rp3p/PbP4P/1PNb2P1/r2PPP2/nk4r1
Input: James Malcom, 2021-02-15
Last update: A.Buchanan, 2022-12-27 more...
Genre: Retro
FEN: nB2q2N/Kpp1pp2/BQ3Rp1/p1Rp3p/PbP4P/1PNb2P1/r2PPP2/nk4r1
Input: James Malcom, 2021-02-15
Last update: A.Buchanan, 2022-12-27 more...
41 - P1404683
Kevin James Begley
P0540 StrateGems 99 07-09/2022
1. ehrende Erwähnung
(14+15)
BP in 9,5
Kontraparraincirce
Kevin James Begley
P0540 StrateGems 99 07-09/2022
1. ehrende Erwähnung
(14+15)
BP in 9,5
Kontraparraincirce
1. e4 d5 2. La6 Sxa6 3. De2 Lg4 4. exd5 Dxd5[+sBd8] 5. De6[+wBd1] Tc8 6. Qxc8 Dd7[+sTc6] 7. Dxd8+ Dxd8[+sBd7] 8. Sf3[+wDe6] Lxf3 9. De2 Lxe2 10. dxe2[+sDd1]
Kevin Begley: Two pairs of units (wDd1/wBe2 and sDd8/sBd7) exchange places twice. (2022-09-27)
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Keywords: Unique Proof Game, Circe (Kontraparrain), Homebase (w), Interchange, Round Trip (DdBb)
Genre: Retro, Fairies
FEN: 3qkbnr/pppppppp/n1r5/8/8/8/PPPPPPPP/RNBQK2R
Input: Kevin Begley, 2022-09-26
Last update: Kevin Begley, 2023-08-22 more...
Genre: Retro, Fairies
FEN: 3qkbnr/pppppppp/n1r5/8/8/8/PPPPPPPP/RNBQK2R
Input: Kevin Begley, 2022-09-26
Last update: Kevin Begley, 2023-08-22 more...
42 - P1407485
Janos Mikitovics
Gabor Tar
P0521 StrateGems 96, p. 190, 10-12/2021
(11+13) C+
BP in 11.5
Janos Mikitovics
Gabor Tar
P0521 StrateGems 96, p. 190, 10-12/2021
(11+13) C+
BP in 11.5
1. c4 f5 2. c5 f4 3. c6 f3 4. cxb7 fxg2 5. bxa8=L gxf1=S 6. Lg2 Sxh2 7. Sf3 Sg4 8. 0-0 Se3 9. Kh2 Sxf1+ 10. Kh3 Sxd2 11. Dg1 Sf1 12. Lxf1
Keywords: Unique Proof Game, Prentos Theme (s), Pronkin Theme (L), Castling, Switchback (s), Round Trip (s-4)
Genre: Retro
FEN: 1nbqkbnr/p1ppp1pp/8/8/8/5N1K/PP2PP2/RNB2BQ1
Input: Gunter Jordan, 2023-01-30
Last update: Gunter Jordan, 2023-01-30 more...
Genre: Retro
FEN: 1nbqkbnr/p1ppp1pp/8/8/8/5N1K/PP2PP2/RNB2BQ1
Input: Gunter Jordan, 2023-01-30
Last update: Gunter Jordan, 2023-01-30 more...
1. Sf3 d5 2. Tg1 d4 3. Sxd4 a5 4. Sb3 Dxd2+ 5. Lxd2 Ta6 6. Dc1 Te6 7. Kd1 Txe2 8. Le1 Te4 9. S1d2 Ta4 10. Lc4 Txa2 11. Sf1 Ta4 12. Ta3 Tb4 13. Sa1 a4 14. La2 Th4 15. Lb1 Txh2 16. Th3 Th1 17. Thxh1
Henrik Juel: 1.Sf3 d5 2.Rg1 d4 3.Sxd4 a5 4.Sb3 Qxd2+ 5.Bxd2 Ra6 6.Qc1 Re6 7.Kd1
Rxe2 8.Be1 Re4 9.S1d2 Ra4 10.Bc4 Rxa2 11.Sf1 Ra4 12.Ra3 Rb4 13.Sa1 a4 14.Ba2 Rh4
15.Bb1 Rxh2 16.Rh3 Rh1 17.Rhxh1
The final position shows the white officers shifted one square to the left, cyclically
(actually the knights also shift places, so Sa1 is [Sg1], and the bishops must keep their square color, of course) (2023-03-24)
Henrik Juel: Stelvio 1.0 found the solution in 55 minutes, and was stopped after an hour
Cedric's problem P1389511 is C+ Euclide 1.01 in 6:22 hours:minutes (2023-03-24)
A.Buchanan: Reto not only has his new engine, he has some heavy dedicated computing power. Relieved that he identified that this one is sound, with its two triple cyclic shifts: BQK & RRN plus platzwechsel BN (2023-03-25)
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Rxe2 8.Be1 Re4 9.S1d2 Ra4 10.Bc4 Rxa2 11.Sf1 Ra4 12.Ra3 Rb4 13.Sa1 a4 14.Ba2 Rh4
15.Bb1 Rxh2 16.Rh3 Rh1 17.Rhxh1
The final position shows the white officers shifted one square to the left, cyclically
(actually the knights also shift places, so Sa1 is [Sg1], and the bishops must keep their square color, of course) (2023-03-24)
Henrik Juel: Stelvio 1.0 found the solution in 55 minutes, and was stopped after an hour
Cedric's problem P1389511 is C+ Euclide 1.01 in 6:22 hours:minutes (2023-03-24)
A.Buchanan: Reto not only has his new engine, he has some heavy dedicated computing power. Relieved that he identified that this one is sound, with its two triple cyclic shifts: BQK & RRN plus platzwechsel BN (2023-03-25)
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Keywords: Unique Proof Game
Genre: Retro
Computer test: C+ Stelvio v1.0 389m strategies found in total, 7.27m of them played (rest discarded because of analysis). Total 24.7 billion moves played.
FEN: 1nb1kbnr/1pp1pppp/8/8/p7/8/1PP2PP1/NBQKBNRR
Input: A.Buchanan, 2023-03-24
Last update: A.Buchanan, 2023-03-25 more...
Genre: Retro
Computer test: C+ Stelvio v1.0 389m strategies found in total, 7.27m of them played (rest discarded because of analysis). Total 24.7 billion moves played.
FEN: 1nb1kbnr/1pp1pppp/8/8/p7/8/1PP2PP1/NBQKBNRR
Input: A.Buchanan, 2023-03-24
Last update: A.Buchanan, 2023-03-25 more...
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