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StrateGems

No. 29, Jan-Mar 2005

R0117 - Klaus Wenda

StrateGems 20, Jan-Mar 2005

a) Retract -1. Be3xBf2 Rf8-f6 -2. Kh2xQh1! Rd8-f8 -3. Se6-f4 & 1. Sd4 Rd4[Rh8]#. Try: -2. Kh2xRh1? Rh8-f8 -3. Sg2-f4 and 1. Sh4? Rh4 isn't check.

b) Retract -1. Bg3xBf2 Qf8-f5 -2. Kh2xRh1! Qh8-f8 -3. Sg2-h4 & 1. Sh4 Qh4[Qd8]#. Try: -2. Kh2xQh1? fails similarly to (a): ..Qd4[Qd8] doesn't give check.

Tries appear as solution in other twin.


P0165 - Christoph Fieberg

StrateGems 20, Jan-Mar 2005

I) 1. e4 d5 2. exd5 Qxd5 3. Bd3 Qxd3 4. Qg4 Qd8 5. d3 Bxg4 6. Bg5 f5 7. Bf6

II) 1. d3 d6 2. Bf4 Bg4 3. Bxd6 Bxe2 4. Be5 Bxd1 5. Be2 f5 6. Bg4 Bxg4 7. Bf6

The black queen and bishop take turns doing the cleaning


P0166 - Michael Grushko

StrateGems 20, Jan-Mar 2005

1. e4 d6 2. Ke2 Bg4 3. Kg4 Qc8 4. Kc8 d5 5. Bb5 Kb5 6. Qf1 Kf1 7. Kd8 Ke1 8. Ke8

Quick swap of kings


P0167 - Michael Grushko

StrateGems 20, Jan-Mar 2005

1. Nf3 c5 2. Ne5 c4 3. f3 c3 4. Kf2 cxd2 5. Qe1 dxe1=R 6. Be3 Rxf1+ 7. Rxf1 Qb6 8. Kg1 Kd8 9. Kh1 Kc7 10. Bg1 Qf2 11. Rd1 Kb6 12. Rd3 Kc5 13. Ra3 Kd4 14. Nc3 Ke3 15. Nd1+ Kd2 16. Nc4+ Ke1

The black king visits the promotion square of the Ceriani-Frolkin rook.


P0168 - Christoph Fieberg

StrateGems 20, Jan-Mar 2005

1. e4 d5 2. exd5 Kd7 3. Qg4+ Kd6 4. Qb4+ c5 5. dxc6+ Kd5 6. cxb7 Nc6 7. b8=N Ba6 8. Nd7 Bxf1 9. Nxf8 Bc4 10. Ng6 hxg6 11. Ne2 Rh3 12. O-O Ra3 13. h4 Rxa2 14. h5 Rxa1 15. h6 Ra3 16. h7 Rf3 17. hxg8=B Rf6 18. Bh7

Valladao + wS Pronkin + wB phoenix.


P0169 - Andrei Frolkin, Kostas Prentos

StrateGems 20, Jan-Mar 2005

1. g4 f5 2. g5 f4 3. g6 f3 4. gxh7 fxe2 5. f3 exd1=Q+ 6. Kf2 Qxd2+ 7. Kg3 Qb4 8. c3 g5 9. cxb4 g4 10. Kf4 g3 11. h4 g2 12. Nh3 g1=Q 13. Bg2 Qd1 14. Bd2 Qb3 15. axb3 Nc6 16. Ra6 Na5 17. Rh6 c6 18. Rc1 Qb6 19. Rc4 Qg1 20. Bc3 Qd1

Double anti-Pronkin by the same piece (bQ).