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9 problem(s) found in 3130 milliseconds (displaying 9 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND NOT K='Umwandlung im Retrospiel' AND A='Pichouron, Eric'] [download as LaTeX]

1 - P1013131
Eric Pichouron
R138 Problemesis 38 04/2004
P1013131
(16+13) C+
BP in 22,0
1. c4 a5 2. c5 a4 3. c6 a3 4. cxb7 Sc6 5. bxa8=T La6 6. Da4 Db8 7. Dh4 Kd8 8. g4 Kc8 9. Lg2 Kb7 10. Le4 Da7 11. Txf8 Sf6 12. Ta8 Tb8 13. Lc2 Kc8 14. d3 Kd8 15. Lh6 Tc8 16. Tb8 Ke8 17. Tb6 Ta8 18. Sd2 Db8 19. Tc1 Dd8 20. Lb1 Sb8 21. Tcc6 Sg8 22. Tf6 Lc8
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Keywords: Unique Proof Game, Interchange, Switchback (kdlss), Impostor (t)
Genre: Retro
Computer test: Computerprüfung: C+ Stevio 1.11 48:53:36 Stunden. (hh:mm:ss) Keine Lösung: BP21.0, BP 21.5.
FEN: rnbqk1n1/2pppppp/1R3R1B/8/6PQ/p2P4/PP1NPP1P/1B2K1NR
Input: Gerd Wilts, 2004-04-01
Last update: A.Buchanan, 2023-03-13 more...
2 - P1066732
Eric Pichouron
PCCC Meeting 09/2004
3. ehrende Erwähnung Champagne TT 2004
P1066732
(12+14) C+
BP in 24,5
1. e4 h5 2. Dg4 hxg4 3. Sc3 Th3 4. Sd5 Tc3 5. bxc3 Sc6 6. La3 Sd4 7. Ld6 cxd6 8. h4 Da5 9. h5 b6 10. h6 Lb7 11. h7 0-0-0 12. Th6 La8 13. Tf6 gxf6 14. Lc4 Lh6 15. d3 Lc1 16. Se2 La3 17. Kd2 Lb4 18. Th1 Da3 19. Th5 a5 20. Te5 fxe5 21. h8=D Sf6 22. Dh1 Th8 23. Dd1 Th3 24. Ke1 Tf3 25. gxf3
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Richter MC: "A well oiled game using the 'standard Rook' to double the theme, displaying an additional Pronkin and switchback by Ke1."
Henrik Juel: Natch 3.1 did little in half an hour (2018-12-19)
Moldenhauer: Computerprüfung: C+ Stelvio 1.2 02:04:15 Stunden. (hh:mm:ss)
Keine Lösung: BP 23.5, BP 24.0. (2023-05-11)
comment
Keywords: Unique Proof Game, Pronkin Theme (D), Switchback, Impostor (Tt)
Genre: Retro
Computer test: Stelvio 1.2
FEN: b1k5/3ppp2/1p1p1n2/p2Np3/1bBnP1p1/q1PP1P2/P1P1NP2/3QK3
Reprints: H58 Phénix 02-03/2005
Input: Gerd Wilts, 2004-09-14
Last update: Silvio Baier, 2023-08-15 more...
3 - P1068539
Eric Pichouron
5008 Phénix 146 12/2005
P1068539
(13+12) cooked
BP in 23,0
1. a3 e5 2. Ta2 Lb4 3. axb4 h5 4. Ta3 h4 5. Tg3 hxg3 6. hxg3 f5 7. Th3 f4 8. gxf4 a5 9. Ta3 Th1 10. Sf3 Txf1+ 11. Kxf1 Ta6 12. Kg1 Tg6 13. Kh2 d6 14. Dh1 Lg4 15. Kg3 Sf6 16. Dh7 Th6 17. Ta1 Th1 18. Sa3 Txc1 19. Kh4 Th1+ 20. Kg5 Th3 21. Th1 Tg3 22. Dh3 e4 23. Sh4 Lc8+
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Cook: 1. Sa3 a5 2. Sb5 e5 3. a3 Lb4 4. axb4 h5 5. Ta3 h4 6. Tg3 hxg3 7. hxg3 Ta6 8. Th7 Th6 9. Sf3 Th1 10. Th2 Txf1+ 11. Kxf1 Th3 12. Kg1 e4 13. Th1 f5 14. Sh4 f4 15. gxf4 Ta3 16. Kh2 Ta1 17. Kg3 Txc1 18. Kg4 Ta1 19. Dg1 Ta3 20. Dh2 Tb3 21. Sa3 Sf6+ 22. Kg5 d6 23. Dh3 Tg3+
Henrik Juel: Natch 3.1 did not find the solution in half an hour
Stopped at pos. 4961 (2018-12-22)
Moldenhauer: Computerprüfung: Cooked Stelvio 1.11 14:12:45 Stunden. (hh:mm:ss)
Keine Lösung: BP22.0, BP 22.5.
Beispiel: 1.Sa3 a5 2.Sb5 e5 3.a3 Lb4 4.axb4 h5 5.Ta3 h4 6.Tg3 hxg3 7.hxg3 Ta6
8.Th7 Th6 9.Sf3 Th1 10.Th2 Txf1+ 11.Kxf1 Th3 12.Kg1 e4 13.Th1 f5
14.Sh4 f4 15.gxf4 Ta3 16.Kh2 Ta1 17.Kg3 Txc1 18.Kg4 Ta1 19.Dg1 Ta3
20.Dh2 Tb3 21.Sa3 Sf6+ 22.Kg5 d6 23.Dh3 Tg3+ (2023-03-28)
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Keywords: Unique Proof Game, Pure Round Trip (T)
Genre: Retro
FEN: 1nbqk3/1pp3p1/3p1n2/p5K1/1P2pP1N/N5rQ/1PPPPPP1/7R
Input: Gerd Wilts, 2006-08-14
Last update: Silvio Baier, 2023-04-05 more...
4 - P1285786
Eric Pichouron
Roberto Osorio 55 Jubilee Tourney (RO55JT) 31/12/2012
4th honorable mention
P1285786
(13+15) C+
BP in 21,0
1. d3 h6 2. Lg5 hxg5 3. h4 Th6 4. h5 Ta6 5. h6 d5 6. h7 Sd7 7. h8=T Sb6 8. T8h2 Lh3 9. e3 e6 10. Le2 Df6 11. Lg4 0-0-0 12. Se2 Td6 13. Tf1 Tc6 14. Thh1 Txc2 15. Thg1 Td2 16. Da4 c5 17. Dxa6 c4 18. a4 c3 19. Sa3 c2 20. Td1 c1=T 21. a5 Tdxd1#
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hans: wK and bT's one step to the right gives this solution:
1. d3 h6 2. Bg5 hxg5 3. h4 Rh6 4. h5 Ra6 5. h6 d5 6. h7 Nd7 7. h8=R Nb6 8. R8h2 Bh3 9. e3 e6 10. Be2 Qf6 11. Bg4 O-O-O 12. Ne2 Rd6 13. Rf1 Rc6 14. Rhh1 Rxc2 15. Rhg1 Rd2 16. Qa4 c5 17. Qxa6 c4 18. a4 c3 19. Na3 c2 20. Rd1 c1=R 21. a5 Rdxd1# (2014-12-15)
Henrik Juel: With Hans' diagram correction:
The theme is doubled, Tc1 and Tg1 are promoted and embrace the original Td1 and Tf1.
The first 19.5 moves are tested correct by Euclide 1.01 (2014-12-15)
A.Buchanan: Thanks: I have shifted the pieces. There's a typo in the FEN in Roberto's preliminary report. My FEN-PDB spreadsheet worked perfectly reproducing the typo! :D (2014-12-17)
Moldenhauer: Computerprüfung: C+ Stelvio 1.4 00:03:36 Minuten. (hh:mm:ss)
Wegen der Retraktion keine weiteren Überprüfungen angestellt!
Notation stimmt. (2023-06-24)
comment
Keywords: Unique Proof Game, Touching Non-Contemporary Siblings
Genre: Retro
Computer test: Stelvio 1.4
FEN: 2k2bn1/pp3pp1/Qn2pq2/P2p2p1/6B1/N2PP2b/1P2NPP1/2rrKRR1
Input: A.Buchanan, 2014-06-28
Last update: Silvio Baier, 2023-08-15 more...
5 - P1384503
Eric Pichouron
France-Echecs 2006
1. Preis
Weihnachtsturnier
P1384503
(17+12)
PG in 8.0
Masand
1. d4 h5 2. Kd2 Th6 3. Ke3 Te6+(e7=w) 4. Kd2 f5 5. Ke1 Kf7 6. e8=B+(d7=w) Dxe8 7. d8=S+(b7, e6=w) Dxd8 8. Te8 Kxe8
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Keywords: Masand, Unique Proof Game
Genre: Retro, Fairies
FEN: rnbqkbn1/pPp3p1/8/5p1p/3P4/8/PPP1PPPP/RNBQKBNR
Input: fs/hg, 2020-12-30
Last update: A.Buchanan, 2023-11-28 more...
6 - P1384504
Eric Pichouron
France-Echecs 2006
4. Preis
Weihnachtsturnier
P1384504
(15+15)
PG in 13.0
Masand
1. a4 e6 2. Ta3 Lc5 3. Tg3 d6 4. Tg6 hxg6 5. e3 Th4 6. Lb5+(a4=b) Kf8 7. d4 a3 8. Ld2 a2 9. La5 a1=T 10.Kd2 Ra4 11. Df1 Thxd4+(a4, d6=w) 12. Ke1 Th4 13. Ta1 Th8
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paul: 1.a4 e6 2.Ra3 Bc5 3.Rg3 d6 4.Rg6 h×g6 5.e3 Rh4 6.Bb5+(a4=b) Kf8 7.d4 a3 8.Bd2 a2 9.Ba5 a1=R 10.Kd2 Ra4 11.Qf1 Rh×d4+(a4, d6=w) 12.Ke1 Rh4 13.Ra1 Rh8 (2023-11-27)
comment
Keywords: Masand, Unique Proof Game
Genre: Retro, Fairies
FEN: rnbqk1nr/ppp2pp1/3Pp1p1/BBb5/8/4P3/1PP2PPP/RN2KQNR
Input: fs/hg, 2020-12-30
Last update: A.Buchanan, 2023-11-28 more...
7 - P1384631
Eric Pichouron
Quartz 2007-2009
1. Preis
P1384631
(14+12) C+
BP in 19.5
1. f4 Sc6 2. Kf2 Sd4 3. Kg3 Sxe2+ 4. Kh4 Sxc1 5. h3 Sd3 6. cxd3 c5 7. d4 c4 8. Ld3 c3 9. Se2 c2 10. Dg1 c1=S 11. Dh2 Sb3 12. Tc1 Sa5 13. Txc8 Sc6 14. Txa8 Sb8 15. Sbc3 Da5 16. Te1 Kd8 17. Sc1 Kc7 18. Te5 Sc6 19. Th5 Se5 20. dxe5
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comment

Genre: Retro
Computer test: C+ Stelvio 1.6 ca. 20 Min. Keine Lösung: BP 19.0.
FEN: R4bnr/ppkppppp/8/q3P2R/5P1K/2NB3P/PP1P2PQ/2N5
Input: fs/hg, 2020-12-30
Last update: A.Buchanan, 2023-12-08 more...
8 - P1390684
Eric Pichouron
8799 Phénix 310-311, p. 12108, 09-10/2020
P1390684
(14+12) C+
BP in 14.0
Knightmate
(a) 1. d4 g5 2. d5 g4 3. d6 g3 4. dxe7 d5 5. b4 Lf5 6. b5 Kc8 7. b6 Kd7 8. bxc7 Tc8 9. cxd8=L Tc3 10. exf8=L Tf3 11. c4 Kxf8 12. c5 Kfe7 13. c6 0-0 14. Lh6 Kexd8
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comment
Keywords: Unique Proof Game, Knightmate
Genre: Retro, Fairies
Computer test: C+ Jacobi
FEN: 3k1rn1/pp1k1p1p/2P4B/3p1b2/8/5rp1/P3PPPP/RK1QNBKR
Input: A.Buchanan, 2021-06-09
Last update: A.Buchanan, 2023-07-09 more...
9 - P1405422
Eric Pichouron
Retros mailing list 25/09/2004
3rd Honorable Mention
Summer Tourney 2003/2004
P1405422
(11+10) C+
PG in 13.0
1. a4 h5 2. a5 h4 3. a6 h3 4. axb7 hxg2 5. h4 a5 6. h5 a4 7. h6 a3 8. h7 a2 9. hxg8=S axb1=D 10. Txa8 Dxc1 11. Txb8 Da1 12. Txc8 Dxc8 13. bxc8=L gxf1=T+
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Henrik Juel: C++ Euclide 1.01
Euclide found the solution quickly and spent som 25 minutes to verify uniqueness
Here C++ means that Euclide found no solution in 12 or 11 moves
The testing times could have been reduced by utilizing that last move must be g2xLf1=T+ almost certainly (2022-10-30)
A.Buchanan: Thanks Henrik - unique PG in 13.0 implies there is no PG in 11.0. For comprehensive check of short solutions it suffices to check deltas 0.5, 1.0 & 1.5. Normally these are way easier to check than the intended length. And if there’s check in the final position as here, then half the tests are free! Is that C+++ in your notation? :) (2022-10-31)
Henrik Juel: No, Andrew, I think that C++ suffices (2022-10-31)
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Keywords: Unique Proof Game, Allumwandlung
Genre: Retro
Computer test: C++ Euclide 1.01
FEN: 2B1kbNr/2ppppp1/8/8/8/8/1PPPPP2/q2QKrNR
Input: A.Buchanan, 2022-10-30
Last update: A.Buchanan, 2022-10-31 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (3)
A.Buchanan (3)
fs/hg (3)