www.arves.org - Shakhmatnaya Kompozitsia 2020

Studies awarded for the Shakhmatnaya Kompozitsia 2020 tournament.

[Event "2.p Shakhmatnaya Kompozitsia 2020"] [White "Sergei Didukh"] [Black ""] [Result "1/2-1/2"] [FEN "6b1/B6P/2r2nK1/1Rp3P1/3q1N2/4R3/8/k7 w - - 0 1"] 
 {Before a pawn is promoted, distract the black rook with the bishop sacrifice, or rooks on c5 after luring the king to check on a3 or on the c-file. It is better give up the rook.} 1. Ra5+ $1 (1. Re1+ $2 Ka2 2. Re2+ Ka3 3. Bxc5+ Rxc5 4. h8=Q Bh7+ 5. Kf7 Rc7+ 6. Re7 Rxe7+ 7. Kxe7 Ng8+ $19) 1... Kb1 (1... Kb2 2. Nd3+) 2. Rb5+ Kc2 3. Re2+ $1 Kc3 (3... Kd1 $2 4. Rb1#) 4. Rxc5+ Rxc5 5. h8=Q Bh7+ $1 ({If a} 5... Rxg5+ 6. Kxg5 Nh7+ {then queen snaps}  (6... Ne4+ 7. Rxe4) 7. Qxh7 $1 Qd8+ 8. Qe7 {and White is already winning.}) 6. Kf7 ({After} 6. Qxh7 $2 Nxh7 7. Bxc5 {the queen takes the bishop} Qxc5 $1 (7... Qxf4 $2 8. Be7 { fortress.}) 8. Re3+ Kc4 9. Re4+ Kb5 10. Ne6 {- not a fortress -} Qc3 $1 $19) 6... Rc7+ 7. Re7 Rxe7+ 8. Kxe7 Ng8+ (8... Nd5+ 9. Nxd5+) (8... Qxa7+ 9. Kf8 $1 Qb8+ 10. Kg7 $11) 9. Kf8 $1 Qxh8 10. Bd4+ $1 Kxd4 (10... Qxd4 11. Ne2+) 11. Ng6 $1 Bxg6 {- correct stalemate.} 1/2-1/2