Die Schwalbe

5 problem(s) found in 6300 milliseconds (displaying 5 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND NOT A='Keym, Werner' AND K='Schnoebelen-Thema'] [download as LaTeX]

1 - P1068641
Michel Caillaud
Moutecidis Fougiaxis Prentos Jubiläumst. 2006
1. Preis
K. Prentos 40 Jahre
P1068641
(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+
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Bob Baker: C+ Stelvio 2.0 Solving time: 00:00:39 seconds (2024-02-28)
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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...
2 - P1098713
Guy Sobrecases
Internet-Turnier 28/01/2010
3. Preis Weihnachtsturnier 2009, Retro
P1098713
(14+14) C+
BP in 9,5
2 Varianten
Immun-Schach
1. e4 b5 2. Se2 b4 3. Sec3 bxc3 4. b4
4. ... La6 5. Lb2 cxb2 6. Sa3 b1=L 7. Txb1 Lb7 8. Tb3 a6 9. Lxa6 Lc8 10. Td3
4. ... a6 5. Lb2 cxb2 6. Sa3 b1=T 7. Lxa6 Tb3! 8. Tb1 Ta7 9. Txb3 Ta8 10. Td3
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Judge Michel Caillaud: Composer succeeds in making Schnoebelen promotion less obvious, thanks to using 2 phases with 2 switchbacks as motivation. The need of a black tempo is the trick that allows differentiation of the phases (and the Schnoebelen Rook becomes an "anti-Schnoebelen" Rook!). Well done.
Sobrecases: Specific try play:

1.Sf3? b5 2.b3 b4 3.Ba3 b×a3 4.b4 Bb7 5.S×a3?? B×f3 6.Rb1 Bc6 7.e4 a6 8.B×a6 Bb7 9.Rb3 Bc8 10. Rd3

4.?a6!? 5.S×a3 Bb7 6.Rb1 B×f3?? 7.Rb3 Bc6 8.e4 Bb7 9.B×a6 Bc8 10.Rd3 (2010-04-12)
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Keywords: Unique Proof Game, Immune Chess, Schnoebelen Theme (TL), Prentos Theme, Ceriani-Frolkin Theme, Homebase (s)
Genre: Retro, Fairies
Computer test: Jacobi+
FEN: rnbqkbnr/2pppppp/B7/8/1P2P3/N2R4/P1PP1PPP/3QK2R
Input: Gerd Wilts, 2010-02-02
Last update: A.Buchanan, 2023-06-29 more...
3 - P1256160
Bernd Graefrath
14448 Die Schwalbe 242 04/2010
Dem Taoisten Hilmar zum 60. Geburtstag gewidmet
P1256160
(15+11)
BP in genau 6,0
Tibetschach
1. e3 a6 2. Lxa6 bxa6[=wBa6] 3. Df3 Lb7 4. axb7 Sa6 5. bxa8=D Dxa8 6.Dxa8+ Sb8
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Moldenhauer: Computerprüfung: C+ Jacobi v0.7.6 beta1 in 6 Min. (2022-08-18)
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Keywords: Unique Proof Game, Tibetan chess, Schnoebelen Theme (D), Anti-Pronkin (D), Prentos Theme, Ceriani-Frolkin Theme
Genre: Retro, Fairies
FEN: Qn2kbnr/2pppppp/8/8/8/4P3/PPPP1PPP/RNB1K1NR
Input: Gerd Wilts, 2012-12-13
Last update: A.Buchanan, 2019-02-03 more...
4 - P1332546
Nicolas Dupont
528 Julias Fairies 16/04/2014
1st Prize
P1332546
(14+14)
BP in 16
Disparate Steine
1. d4 Sf6 2. d5 Sh5 3. Dd4 a5 4. Sf3 Ta6 5. d6 Tb6 6. dxc7 Sa6 7. Ld2 d5 8. Sh4 Lg4 9. c8=D Lxe2 10. Kxe2 e5 11. Kf3 Dd7 12. Lb5+ Ke7 13. La4 Ke6 14. Te1 Le7 15. Te2 Db5 16. Le1+ Txc8
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It is a fine demonstration of the potential of the fairy condition Disparate. In the solution, a white promotion (into piece X) occurs on square c8 before any move of [Qd8] or [Ke8]. The following move Qd7 proves that X is not a rook (it can still be a queen because of the fairy condition!). The immediately following move Ke7 proves that X is not a knight. Then Ke6 is played, followed by a move by Qd7 which proves that X is not a bishop.
X thus can only be a queen! (We still have to show that the position is legal.) Only after completion of the proof, the promoted queen is captured. It is admirable that the author managed to compose a move sequence obeying all mentioned constraints concerning the move order. A rich demonstration of the fairy condition, exciting to solve.
Henrik Juel: Definition of Disparate from Julia's Fairies:
If one side makes a move with a piece of type “x” (black, white,neutral, half-neutral, etc., King included), the other side cannot answer immediately by moving a piece of the same type “x”.). A pawn promoting is a pawn move.
To me, it is not clear from the definition that 9.c8 is undetermined, and only later is inferred to be 9.c8=Q
Why can White not decide to promote to queen? (2017-03-18)
Henrik Juel: I misunderstood your text, Vlaicu
Now I see that White indeed decides to promote to queen, and your argument shows why the other promotion choices do not work in this proof game (2017-03-18)
Henrik Juel: ... even though the promoted man never moves (2017-03-18)
paul: Jacobi checked the last 12 moves and gave unique solution.
cond disparate
stip dia 4 pieces white Ke1 Qd4 Ra1h1 Bc1f1 Sb1f3 Pa2b2c2e2f2g2h2d5 black Ke8 Qd8 Ra6h8 Bc8f8 Sh5b8 Pa5b7c7d7e7f7g7h7
stip dia 12 forsyth 2r5/1p2bppp/sr2k3/pq1pp2s/B2Q3S/5K2/PPP1RPPP/RS2B3 (2023-07-12)
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Keywords: Schnoebelen Theme, Disparate, Prentos Theme, Ceriani-Frolkin Theme
Genre: Fairies, Retro
FEN: 2r5/1p2bppp/nr2k3/pq1pp2n/B2Q3N/5K2/PPP1RPPP/RN2B3
Input: Vlaicu Crisan, 2017-03-18
Last update: A.Buchanan, 2019-02-03 more...
5 - P1394899
Andrey Frolkin
Igor Vereshchagin

WCCC Rhodes 10/2021
2nd HM Champagne-TT A
P1394899
(14+11) C+
BP in 11.0
1. a4 g5 2. a5 g4 3. a6 g3 4. axb7 a5 5. b4 Ta6 6. b5 Tg6 7. b6 Sa6 8. b8=S gxh2 9. Sc6 Txg2 10. Sxe7 Sxe7 11. b7 Thg8 12. b8=S T8g7 13. Sc6 Sxc6 14. e4 Df6 15. e5 Df3 16. e6 f5 17. e7 Kf7 18. e8=T Lc5 19. Td8 Sxd8
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A.Buchanan: Can someone post the A-to-B 1st HM by Per Olin, please (2021-10-25)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 1 Sekunde.
Keine Lösung: BP 10.0, BP 10.5.
Notation: 1.f4 Sf6 2.f5 Sd5 3.f6 h5 4.fxe7 h4 5.exd8=T+ Ke7 6.b4 Ke6
7.b5 Le7 8.b6 Txd8 9.bxa7 b5 10.axb8=S Lb7 11.Sxd7 Txd7 (2023-05-09)
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Keywords: Unique Proof Game, Homebase (w), Champagne-TT (2021), Schnoebelen Theme (T)
Genre: Retro
FEN: r7/1bprbpp1/4k3/1p1n4/7p/8/P1PPP1PP/RNBQKBNR
Input: A.Buchanan, 2021-10-25
Last update: Silvio Baier, 2023-11-14 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (3)
Vlaicu Crisan (1)
A.Buchanan (1)