[Retros] StrateGems 45 (Jan-Mar 2009)

[Joost de Heer]

R0140v - Ryan McCracken
Dedicated to Paul Raican
8/8/8/8/8/8/3r4/B2r4 (1+2)
Add wK, bK, 4 wP, 4 bP for a (6+7) IC

P0236 - James Soliman
rsBqkBsr/p1pppp1p/6p1/1p6/2P1S3/3P4/P4PPP/R1bQKbSR (14+16)
SPG 9.0

P0237 - Michael Grushko
r1B1r1SR/ppps1p1p/2k3p1/r7/8/2s5/P1PQPPPP/rSB1KBSR (16+13)
SPG 9.5 Masand

P0238 - Henryk Grudzinski
r4rk1/pp1ppppp/8/2P5/8/5S2/P1P1PP1P/RB2K1BR (12+10)
SPG 10.5 Take&make

P0239 - James Soliman
Q5sr/2pp1p1p/sp4rk/p1b1p3/2b4K/SP3P2/P1PPPP1P/R1B2BSR (16+14)
SPG 15.5

P0240 - Thomas Sawyer, Ryan McCracken
rqksKb1r/R1pppp1p/5s2/P5p1/8/2S2P2/1PPP1PPP/2BQ1BSR (16+13)
SPG 16.0

P0241 - James Soliman
3s3R/1ppk1p2/B2p4/B1q1p3/b1Q1P2P/bP1P2P1/1PP2P2/1S2K1Sr (15+11)
SPG 17.0

P0242 - Gianni Donati
rs1q1rsk/B1pppp1p/1pS2p2/5R2/P7/2P4P/1PP1P2P/1S2K1QR (14+13)
SPG 18.0

P0243 - Itamar Faybish
6ss/qbkr2b1/pppppppp/7r/7P/6P1/4P3/RS2K1S1 (7+16)
SPG 21.0

Solutions:
R0146 - Keith
a) With black to move, the position is stalemate, a draw. With white to 
move, the black king came to b1 through d1 and e2. In monochromatic 
chess, the white king didn't have to move to allow this. So white wins 
with 1. OO.
b) wRc2 is the promoted wPg2. Since wSb1 never moved, the only 
lightsquared white piece bPh3 could have captured is the white queen. 
The other capture must've been the white h-pawn captured en passant. No 
other light-suqared black pawn could have gotten to the 3rd rank, let 
alone promote. In order for wPg2 to promote, it had to capture 4 black 
pieces. wPd3 captured a black piece on d3, another lightsquared piece. 
bRa8 and bBc8 account for at most two of these captures. If all other 
captures were whitesquared pieces, they would have been bPf7, bPh7 and 
bSg8, but this is impossible since bPh3 is either the f- or h-pawn. So 
one of the other 3 captures was an ep capture. So at least two 
ep-captures occurred.

R0147 - Wenda/Crisan
-1. Kg3xBh2[wKe1] Bg1-h2 -2. Bg2xQh3[wBf1] Qh1-h3 -3. Kf2-g3 Bh2-g1 -4. 
Ke1-f2 Bg1-h2 -5. Kf2xSf3[wKe1] Bh2-g1 -6. Qe3-a7 and 1. Bh3 Qf1#

R0148 - Crisan
-1. Kg2xRh3[+bRa8,-bBa8] Rf3-h3 -2. Kg3-g2 Rf4-f3 -3. Kf3-g3 Re4-f4 -4. 
Kf4-f3 Re5-e4 -5. Ke4-f4 Rd5-e5 -6. Ke5-e4 Rd6-d5 -7. Kd5-e5 Rc6-d6 -8. 
Kd6-d5 Rc7-c6 -9. Kc6-d6 Rb7-c7 -10. Sd6-e8 & 1. Kb7[+bRa8,-bBa8]#

P0213v - de Heer
1. e4 a5 2. Qf3 Ra7 3. Qf6 exf6 4. e5 Bc5 5. e6 d6 6. e7 Kd7 7. Kd1 Kc6 
8. e8=Q+ Kb6 9. Qe1 Ne7 10. Ke2 Ka6 11. Qd1 Bb6 12. Ke1#

P0223 - Belcsak
1. e4 d5 2. ed5[S] Be6[S] 3. Se7[B] Sd7[P] 4. Bf8[R] Sf8[B] 5. Se2[P] Se7[P]

P0224 - Buchanan
1. h4 e5 2. h5 Ke7 3. h6 Kf6 4. hxg7 Kg5 5. Nh3+ Kh4 6. gxf8=Q Qg5 7. 
Qxc8 Nf6 8. Qxc7 Rc8 9. Qxe5 Rc4 10. Qh2 Rg4 11. Ng1#

P0225 - Buchanan
1. h4 e6 2. h5 Ke7 3. h6 Qe8 4. hxg7 h5 5. g4 h4 6. g5 h3 7. g6 Kf6 8. 
gxh8=Q+ Kg5 9. Qe5+ Kh4 10. g7 Ne7 11. g8=R h2 12. Rg2 Ng6 13. Qxh2#

P0226 - Soliman
1. a4 c5 2. Ra3 Qc7 3. Rh3 Qxh2 4. Rxh7 Qxh7 5. Rh3 g5 6. Ra3 Bg7 7. b3 
Bb2 8. Ra1 Ba3 9. Bb2 c4 10. Bxh8 c3 11. Bd4 f6 12. Bxa7 Kf7 13. Bxb8 
Rxa4 14. Bf4 Rxf4 15. d4

P0227 - Osorio, Lois
1. c4 Nf6 2. Qa4 Ne4 3. Qa6 bxa6 4. Nc3 Bb7 5. Nd1 Bd5 6. cxd5 Nc6 7. d6 
Qb8 8. dxc7 Nd8 9. c8=Q Qg3 10. Qc2 Nc3 11. e4 Qxg2 12. Bc4 Qg3 13. d3 
Qb8 14. Bf4 Nc6 15. Bc7 Qd8 16. f4 Nb8

P0228 - Minerva
1. d4 Nc6 2. d5 Nd4 3. d6 Nxe2 4. dxe7 Nxg1 5. exf8=N Qh4 6. Nxd7 Qa4 7. 
Nf6+ Nxf6 8. Qd8+ Kxd8 9. Bf4 Bh3 10. Nd2 Bc8 11. O-O-O Bh3 12. g4 Qe8 
13. Kb1 Qe1 14. Ne4+ Nd7 15. Bc1 Qa5 16. Rxd7+ Ke8 17. Rxf7 Qh5 18. g5 
Bc8 19. Rf5 Qd1 20. f3 Qd8

Cooked by Radovan Tomasevic: 1. d4 Nc6 2. d5 Nd4 3. d6 Nxe2 4. dxe7 Nxg1 
5. exf8=R+ Ke7 6. Nc3 Nh6 7. Bxh6 Nh3 8. Ne4 Ng1 9. Rxf7+ Ke8 10. Qxd7+ 
Bxd7 11. O-O-O Bh3 12. Rdd7 Bxd7 13. Kb1 Bh3 14. Bc1 Bc8 15. g4 Qd1 16. 
Rf5 Qd8 17. g5 Qd1 18. f3 Qd8

P0229 - Dupont
1. b4 e5 2. b5 e4 3. b6 e3 4. bxa7 b5 5. a4 b4 6. a5 b3 7. Ra4 b2 8. Na3 
b1=N 9. a6 Nc3 10. dxc3 exf2+ 11. Kd2 f5 12. e4 f4 13. Bc4 f3 14. Ke3 
f1=N+ 15. Kf4 Ng3 16. hxg3 d5 17. Rh6 d4 18. Rd6 d3 19. Be6 d2 20. Kf5 
dxc1=N 21. Qd4 Nd3 22. cxd3 f2 23. Nc2 fxg1=N 24. Na1 Nh3 25. gxh3