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Probleemblad

Sep-Oct 2005

R287 - Eyjolfur Eyjolfsson

Probleemblad, Sep-Oct 2005

I) 1. a4 c5 2. a5 c4 3. a6 c3 4. ab7 cb2 5. ba8=R ba1=R 6. Ra7 Rb1 7. Ra1

II) 1. a4 b5 2. ab5 c6 3. Ra7 cb5 4. Rb7 Ra2 5. Rb5 Rb2 6. Ra5 Rb1 7. Ra1


R288 - Unto Heinonen

Probleemblad, Sep-Oct 2005

1. Nc3 Nf6 2. Nd5 Ne4 3. Nf6+ exf6 4. h4 Bb4 5. h5 d6 6. h6 Bf5 7. hxg7 Qc8 8. g8=N Kf8 9. Ne7 Kg7 10. Nd5 Re8 11. Nc3 Re5 12. Nb1 Nc3 13. d4 Ra5 14. Bf4 c5 15. e3 Nc6 16. Ba6 b5 17. g4 Qxa6 18. g5 Re8 19. g6 Re4 20. Be5 Rh4 21. Qg4 Kh6 22. g7 Nd8 23. g8=N#


R289 - Andrei Kornilov

Probleemblad, Sep-Oct 2005

Retro: -1... Qh7-h8# -2. a2-a3 Re8xSe7 -3. Sd5-e7 Re7-d7 -4 Sd7-f8 Rf8xSe8 -5. Sg7-e8 Qh8-h7 -6. Bh7-g8 Re8-f8 -7. S~-d7 Qf8-h8 -8. Bg8-h7 h7x~g6 -9. ~-g6 g6x~h5 -10. ~-h5 Bd7-c8


R290 - Dmitri Baibikov

Probleemblad, Sep-Oct 2005

Add: wGIf2, wSf3, bGIg5, bQg7. Retract: -1. GIc3-b7 b3-b2 -2. GId7-c3 b4-b3 -3. GIh6-d7 b5-b4 -4. GId5-h6 b6-b5 -5. GIe1-d5 GIb4-f5 -6. GIf5-e1 GIf1-g5 -7. Sg5-f3 GIf3-b4 -8. GIb3-f2 f2-f1=GI -9. GIc7-b3 b7-b6 -10. GIg8-c7 Qf8-g7 -11. g7-g8=GI Qc8-f8 -12. a5-a6 Qc1-c8 -13. a4-a5 c2-c1=Q -14. a3-a4 c3-c2 -15. a2-a3 c4-c3 -16. c3xSd4 etc.


R291 - Wolfgang Dittmann

Probleemblad, Sep-Oct 2005

-1. Kc6-b6! [Ba8 and Rc8 are unable to move now] b5-b4 -2. a2-a4 b6-b5 -3. e6xBf7[->f2] Bg8-f7 (Be8-f7? -4. Bd4-g1 and 1. fg7[->g2]#) -4. b5xa6ep! a7-a5 -5. Kb7-c6 Bf7-g8 -6. Kc6-b7 Bg8-f7 -7. Kb7-c6 Bf7-g8 -8. Kc6-b7 Be8-f7 (forced because the 3-fold repetition rule) -9. Bd4-g1 and 1. fxg7[->g2]#.