# StrateGems

No. 47, Jul-Sep 2009

R0153 -

StrateGems 47, Jul-Sep 2009

Try: Retract -1. Kd2-d1? c4-c3 -2. Ke3-d2 d5-d4 -3. Ke4-e3 d(7/6)-d5 -4. Kf4-e4 Bg1-h2 -5. d5xPe6(Pe2)ep e7-e5 -6. Ke3-f4 (in order to force the black king to f8 using a pendulum) g2-g1=B!

This problem can be solved by bringing an 8th pawn on the board: -1. Kc2-d1 b4-b3 -2. Kb3-c2 Bb1-a2 -3. Kc2-b3 Ba2-b1 -4. Kb3-c2 Bb1-a2 -5. Kc2-b3 b2-b1=B (forced to avoid a triple repetition) -6. Kd2-c2 c4-c3 -7. Ke3-d2 d5-d4 -8. Ke4-e3 d(7/6)-d5 -9. Kf4-e4 Bg1-h2 -10. d5xPe6(Pe2)ep e7-e5 -11. Ke3-f4 Bh2-g1 -12. Kf4-e3 Bg1-h2 -13. Ke3-f4 Bh2-g1 -14. Kf4-e3 Kf8-g8 (again forced to avoid a triple repetition) -15. h7-h8=S & 1. h8=Q#

P0250 -

StrateGems 47, Jul-Sep 2009

1. f4 e5 2. Kf2 Bc5+ 3. Kg3 exf4+ 4. Kxf4 Bxg1 5. Ke5 Bd4+ 6. Kxd4 Qh4+ 7. Kc5 Qe1 8. d4 Qa5+

P0251 -

StrateGems 47, Jul-Sep 2009

1. a4 b5 2. axb5 Nc6 3. Rxa7 Nxa7 4. h4 c6 5. h5 Qa5 6. h6 Kd8 7. hxg7 Kc7 8. gxf8=R Kb6 9. Rxg8 Kxb5 10. Rxc8 Qd8 11. Rxa8 Nc8 12. Ra1

P0252 -

StrateGems 47, Jul-Sep 2009

1. c3 a6 2. Qa4 Ra7 3. Qa6(Pa8) Sf6 4. Qb6 Sa6 5. Qb7(Pb8) Sh5 6. Qc6 Bb7 7. Qc7(Pc8) Qc7(Qb6) 8. Qg6 hg6(Qf5) 9. Qg4 Rh6 10. Qg6(Pg8) Rg6(Qf6) 11. Qg7(Ph8) d6 12. Qd4 Bg7 13. Qd6(Pd8) Bd4 14. Qe7(Pf8) Qe7(Qg7) 15. Qg6(Rg5) Kd7 16. Qf7(Pe8) Rc5 17. Qb3 Rc4 18. Qd1 Rc3(Pc2)

P0253 -

StrateGems 47, Jul-Sep 2009

1. d3 c6 2. Bd2 Qb6 3. Ba5 Qb3 4. axb3 Nf6 5. Ra4 Nd5 6. Rh4 Nb6 7. e4 Kd8 8. Qh5 Kc7 9. Be2 Kd6 10. Bg4 Nd5 11. f3 Kc5 12. Kf2 Kd4 13. Kg3 Ke3 14. Kh3 Kf2 15. c4 Kf1 16. Nc3 Ke1 17. Nge2+ Kf2 18. Re1 Nf6 19. Ng1 Ng8 20. Re3 Kf1

P0254 -

StrateGems 47, Jul-Sep 2009

1. g4 d6 2. Bg2 Bf5 3. Bc6+ Nd7 4. Ba4 c6 5. b4 Qa5 6. b5 O-O-O 7. b6 Nb8 8. bxa7 b5 9. a8=Q b4 10. Qa7 b3 11. Qe3 b2 12. Qh6 gxh6 13. g5 Bg7 14. g6 Be5 15. g7 Nf6 16. g8=Q Bf4 17. Qg2 Rhg8 18. Qd5 cxd5 19. Be8 Nc6 20. Bd7+ Kb8 21. Be6