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Problemesis

No. 32, April 2003 - SOLUTIONS

R81 - Bernd Graefrath
Problemesis 32, April 2003

There are 6 switchbacks: Bb7-h1-b7, Bc8-b7-c8, Qd8-e8-d8, Ra8-b8-a8, Nf4-g2-f4, Nb8-a6-b8.

Proof game:

1. g4 b5 2. Na3 b4 3. Nc4 Bb7 4. Nd6 Bxh1 5. Nxe8 Qxe8 6. Nh3 Bb7 7. Nf4 Bc8 8. h3 Na6 9. Bg2 Rb8 10. Bh1 Qd8 11. Ng2 Ra8 12. Nf4 Nb8


R82 - Satoshi Hashimoto
Problemesis 32, April 2003

1. d3 Nf6 2. Be3 Nd5 3. Kd2 Nb6 4. Kc3 a6 5. Kb4 Ra7 6. Nc3 Na8 7. Bb6 Rg8 8. e3 Rh8 9. Qg4 Rg8 10. Qc4 Rh8 11. g4 Rg8 12. Bg2 Rh8 13. Bd5 Rg8 14. Nf3 Rh8 15. Rag1 Rg8 16. Rg3 Rh8 17. Rh3 Rg8 18. Rh5 Rh8 19. h4 Rg8 20. Rh3 Rh8 21. Nh2 Rg8 22. Rf3 Rh8 23. Rf4 Rg8 24. Rd4 Rh8 25. f4 Rg8


R83 - Alessandro Cuppini
Problemesis 32, April 2003

-1. Kf5-g6 & 1. h?#8212;g6 e. p. ‡


R84 - Thierry Le Gleuher
Problemesis 32, April 2003

1. d4 b5 2. d5 b4 3. d6 b3 4. d?#8212;c7 b?#8212;a2 5. c?#8212;b8=N a?#8212;b1=N 6. Ra4 f5 7. Rg4 f?#8212;g4 8. f4 g3 9. f5 g?#8212;h2 10. f6 h?#8212;g1=N 11. Rh4 Kf7 12. Rf4 Kg6 13. f7 Kh6 14. f?#8212;g8=N+


R85 - Thierry Le Gleuher
Problemesis 32, April 2003

1. c4 f5 2. c5 f4 3. c6 f3 4. c?#8212;b7 f?#8212;e2 5. b?#8212;c8=B e?#8212;f1=B 6. Qf3 c5 7. Ne2 Qb6 8. Rg1 Kd8 9. Q?#8212;f8+ Kc7 10. Qf3 c4 11. Q?#8212;a8 c3 12. f4 c?#8212;b2 13. f5 b?#8212;c1=B 14. f6 Qb2 15. f7 Kb6 16. f8=B


R86 - Thierry Le Gleuher
Problemesis 32, April 2003

1. h4 e5 2. Rh3 Qg5 3. Rd3 Qe3 4. f?#8212;e3 b5 5. Kf2 b4 6. Kf3 b3 7. Ke4 b?#8212;c2 8. b4 f6 9. b5 Kf7 10. b6 Kg6 11. b7 Kh5 12. b?#8212;c8=Q Kg4 13. Qd8 Kg3 14. Kf5 Kf2 15. g3 c?#8212;d1=Q 16. Bg2 Ke1 17. Bb7 d5 18. Ke6 Nd7 19. Kf7 Rc8 20. Ke8


R87 - Alessandro Cuppini
Problemesis 32, April 2003

The last move of White was either c2-c4 or e2-e4.

if c2-c4 : 1. b?#8212;c3 e. p. R?#8212;f5 2. d?#8212;e4 b?#8212;c3‡
if e2-e4 : 1. f?#8212;e3 e. p. R?#8212;b5 2. d?#8212;c4 f?#8212;e3‡


R88 - Michel Caillaud
Problemesis 32, April 2003

1. e4 f6 2. Qg4 Kf7 3. Q?#8212;d7 Kg6 4. Qc6 Qd5 5. d4 Qb3 6. d5 Bg4 7. d6 e6 8. d7 Bc5 9. d8=Q Ne7 10. Qd1 Rd8 11. e5 Rd4 12. Qd5 e?#8212;d5 13. e6 Nc8 14. e7 Bb6 15. e8=R c5 16. Re5 Nc6 17. Rg5+ f?#8212;g5


R89 - Michel Caillaud
Problemesis 32, April 2003

a) 1. 0-0-0? illegal! : 1. Bc5+ Q?#8212;a8‡

b) 1. 0-0-0 Qb7‡