www.arves.org - Zadachy i Etyudy 2011

Studies awarded in the Russian Magazine tournament Zadachy i Etyudy 2011.

[Event "2.p Zadachi i Etiudy"] [Site ""] [Date "2011"] [Round ""] [White "Akobia=I"] [Black "- No.4037"] [Result "1-0"] [SetUp "1"] [FEN "1b2N3/4p3/3P3n/8/8/2R1K2p/2P5/5k2 w - - 0 0"] [PlyCount "23"] [SourceDate "2005.01.24"] 
 1. Rb3 $1 (1. d7 $2 Nf7 2. Rb3 Bg3 $1 (2... Ba7+ $2 3. Kf4 h2 4. Kg3 h1=N+ $1 5. Kf4 $18) (2... Bh2 $2 3. d8=Q Nxd8 4. Kf3 Ke1 5. Re3+ Kd1 6. Rd3+ Kxc2 7. Rxd8 $18) 3. Ng7 (3. Kf3 Be1 4. Re3 h2 5. Rxe1+ Kxe1 6. Kg2 Kd2 $11) 3... h2 4. Rb1+ Kg2 5. Nf5 Bf2+ 6. Ke2 Nd8 7. Rf1 Bg1 8. Rf4 h1=Q 9. Rg4+ Kh3 10. Rh4+ Kg2 11. Rxh1 Kxh1 12. Nxe7 Kg2 $11) 1... Bxd6 (1... h2 2. d7 Ba7+ 3. Kf4 Nf7 4. Kg3 h1=N+ 5. Kf4 Nf2 6. Kf5 $18) 2. Kf3 Ke1 3. Nxd6 exd6 4. Kf4 $1 (4. Ke4 $2 Ng4 5. Rxh3 Nf2+ $11) (4. Kg3 $2 Nf5+ 5. Kxh3 Kd2 $11) 4... Kd2 (4... Nf7 5. Rxh3 { main line}) 5. Rxh3 $1 ({Thematic try} 5. c4 $2 Nf7 $1 ({not} 5... h2 $2 6. Rh3 Nf7 7. Kf5 $1 Ne5 8. c5 $1 $18) 6. Rxh3 Ne5 7. c5 Ng6+ $1 8. Kg5 {(see main line after 9.Kg5)} dxc5 9. Kxg6 c4 10. Kf5 c3 11. Ke4 c2 {(draws because c2 is unblocked)}) 5... Nf7 6. c3 $3 {zz} (6. c4 $2 Ne5 {and as in line 5.c4?}) 6... Kc2 (6... d5 7. Rh5 Kxc3 8. Rxd5 Kc4 9. Rd7 $18) 7. c4 (7. Kf5 $2 d5 $1 (7... Ne5 $2 8. Ke4 $18) 8. Kf6 Nd6 9. Ke5 Nb5 $11) 7... Ne5 8. c5 Ng6+ 9. Kg5 $1 { (see TT after 8.Kg5)} dxc5 10. Kxg6 c4 11. Kf5 c3 12. Ke4 {and wins because is blocked c2} 1-0