[Retros] StrateGems 47, Jul-Oct 2009

[Joost de Heer]

R0153 - Wolfgang Dittmann
6kS/5S2/8/p5p1/3p4/1pp2p2/b3P2b/3Ks3 (4+10)
-15 & #1 Proca, Anticirce

P0250 - Ivan Antonov
rsb1k1sr/pppp1ppp/8/q1K5/3P4/8/PPP1P1PP/RSBQ1B1R (14+14)
PG 8.0 Monochromatic (C+)

P0251 - Paul Monski
2sq3r/3ppp1p/2p5/1k6/8/8/1PPPPPP1/RSBQKBSR (14+9)
PG 11.5 (C+)

P0252 - Kevin Begley, Kostas Prentos
pppppppp/rb1kq3/s7/7s/3b4/2r5/PPPPPPPP/RSBQKBSR (16+16)
PG 18.0 Equipollentscirce

P0253 - James Soliman
rsb2bsr/pp1ppppp/2p5/B6Q/2P1P1BR/1PSPRP1K/1P4PP/5kS1 (16+15)
PG 20.0 (C+)

P0254 - Kostas Prentos
1k1r2r1/4pp1p/2spBs1p/q2p1b2/5b2/8/PpPPPP1P/RSBQK1SR (14+15)
PG 20.5 (C+)

SOLUTIONS SG45

R0140v - McCracken
Add wKe4 wPa2 wPc2 wPe2 wPg2 bKf6 bPb7 bPd7
Only possible retromoves were -1. Kd4xBe4 Bd3(x-)e4. But Bd3 is 
impossible due to the white and black pawns. Removing a piece results in 
an easier to resolve check (or no check at all), removing a pawn 
legalises the bishop.

P0236 - Soliman
1. e4 g6 2. Ba6 b5 3. c4 Bb7 4. Nc3 Bxe4 5. Bc8 Bd3 6. Ne4 Bf1 7. d3 Bg7 
8. Bh6 Bxb2 9. Bf8 Bc1

P0237 - Grushko
1. d4 g6 2. d5 Bg7 3. d6 Bb2 4. de7 Bd4 5. ed8=R[wBc8,wPd7] Ke7 6. 
Re8[bBc8,wBf8] Kd6 7. d8=R[wBc8,bRe8] Kc6 8. Rd5 Sd7 9. Ra5 
Bc3[bRa1,bRa5,wRh8] 10. Qd2

P0238 - Grudzinski
1. Sc3 e6 2. Sd5 Ba3 3. bxa3-f8=B Qg5 4. Be7 Sxe7-a3 5. Bxa3-b1 Qe3 6. 
dxe3-c5 exd5-e7 7. Qxd7-d6 Bh3 8. gxh3-c8=B OO 9. Bd7 Sxd7-h3 10. Sf3 
cxd6-d7 11. Bxh3-g1

P0239 - Soliman
1. b3 a5 2. Ba3 Ra6 3. Qc1 Rg6 4. Qb2 b6 5. Qxg7 e5 6. Bc1 Qf6 7. Na3 
Qf3 8. gxf3 Bc5 9. Bh3 Ke7 10. Qf8+ Kf6 11. Kf1 Kg5 12. Kg2 Ba6 13. Kg3 
Bc4 14. Bf1 Na6 15. Qb8 Kh6+ 16. Kh4

P0240 - Sawyer, McCracken
1. a4 g6 2. Ra3 Bg7 3. Rb3 Bc3 4. Rxb7 Nf6 5. Rxa7 Bb7 6. a5 Bf3 7. exf3 
Nc6 8. Ke2 Qb8 9. Ke3 Kd8 10. Kf4 Kc8 11. Kg5 Nd8 12. Kh6 g5 13. Kg7 
Ng8+ 14. Kf8 Bg7+ 15. Ke8 Bf8 16. Nc3 Nf6#

P0241 - Soliman
1. h4 a5 2. Rh3 a4 3. Rb3 axb3 4. axb3 e5 5. Rxa8 Ba3 6. e4 Qe7 7. Ba6 
Qc5 8. Qe2 d6 9. Qc4 Bd7 10. d3 Ba4 11. Bd2 Kd7 12. Ba5 Nc6 13. Rxg8 Nd8 
14. Rxg7 Rg8 15. Rxh7 Rg3 16. Rh8 Rh3 17. g3 Rh1

P0242 - Donati
1. f4 Na6 2. f5 Rb8 3. f6 gxf6 4. a4 Bh6 5. Ra3 Bf4 6. Rf3 Be5 7. Rf5 
Bc3 8. dxc3 Nh6 9. Be3 O-O 10. Bxa7 b6 11. Nf3 Bb7 12. Ne5 Bf3 13. Qd4 
Bg4 14. Qg1 Bh3 15. gxh3+ Kh8 16. Bg2 Ng8 17. Ba8 Rxa8 18. Nc6 Nb8

P0243 - Faybish
1. a4 Nc6 2. a5 Ne5 3. a6 bxa6 4. b4 Bb7 5. b5 Qb8 6. b6 axb6 7. c4 Qa7 
8. c5 O-O-O 9. c6 dxc6 10. h4 Rxd2 11. Rh3 Rd7 12. Qd6 cxd6 13. Rg3 Kc7 
14. Rg6 hxg6 15. g3 Rh5 16. Bh6 gxh6 17. Bh3 Bg7 18. Be6 fxe6 19. f4 Nf7 
20. f5 Nh8 21. f6 exf6