<p> When everything is going right, a slight lapse or one bad move is enough to spoil the proceedings and bring about a downfall. Therefore it is important to calculate and think before every move even when the game appears to have been won!<br /><br />In the game which follows, White is comfortable and has also launched an attack on his opponent’s King. However a blunder on the 31st turn swings the tide in Black’s favour.<br /> White: Victor Mikhalevski (2545)- Black: Valery Loginov (2500) Beersheba-St Petersburg, 1998<br /><br /></p>.<p>King’s Indian defence<br />1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 <br />The King’s Indian defence<br /> 4.e4 d6 5.h3 0–0 6.Bg5 Na6 7.Bd3 e5 8.d5 c6 9.Nge2 cxd5 <br />Black can also play 9. ..Qb6<br />10.cxd5 Nc5 11.Bc2 a5 12.a3 a4 13.0–0 <br />If 13.g4 Bd7 14.Kf1 Bd7 <br />13. ..Bd7 14.g4. Till now the players were playing in accordance with theory but now White plays a new move. If 14.Qd2 Qb6 15.Rab1 Rfc8 16.Ng3 Qd8 (If 16...Rc7 17.Be3) 17.Bh6 Bxh6 18.Qxh6 Qf8 19.Qe3 Be8 <br />14...h5 15.f3. Interestingly both players have pushed their King side pawns<br />15. ..b5. Black now acts on the queen side. If 15...Qb6 16.Kg2 Qxb2 17.Rb1 Qxa3 18.Bc1 with advantage for White <br />16.Na2. Perhaps 16.Qe1 appaers better! If 16.Kg2 Nxg4 <br />16...Qb6 17.Kg2. Immediately getting out of the dangerous diagonal. If 17.Be3 hxg4 18.fxg4 Bxg4 19.hxg4 Nxg4 20.Bf2 leads to an unclear position<br />17...Rac8 18.Nb4. Worth a try is 18.Be3 <br />18...Na6 19.Qd2<br />If 19.Nxa6 Qxa6 (19...Nh7 20.Qd2 <br />19...Nxb4 20.axb4 Nh7! 21.Be7<br />If 21.Be3 Rxc2 and if 21.Bh4 Bh6 22.Qxh6 Rxc2 23.Rf2 Rxb2 24.gxh5 g5 25.Bg3 Qd8 with advantage for Black <br />21...Rfe8. If 21...Bh6 22.Qxh6 Rxc2 23.Rae1 <br />22.Bh4 Bf6. An invitation to exchange bishops! Black should have tried 22... ..Bh6 23.Qxh6 Rxc2<br />23.Bxf6 Nxf6 24.Bd3 Kg7 25.Rf2<br />With the intention of doubling the rooks. If 25.g5 Nh7 26.f4 Qd8 (26...exf4 27.Qxf4 Rf8 28.e5 Rce8 29.exd6 Bxh3+) 27.h4 exf4 28.Qxf4 Qe7 <br />25...h4. If 25...Qd8 or 25...Nh7<br />26.Raf1. If 26.Qg5 Qd8 27.Qxh4 Nxg4 28.Qxd8 Ne3+ which works better for Black <br />26...Nh7 27.f4 27. .. exf4 28.Qxf4 <br />If 28.Nxf4 Re7 <br />28...Rf8. If 28...f6 29.g5 <br />29.e5 dxe5 30.Qxe5+ Kg8 <br />Diagram 1<br />31.Rf6. A blunder! White was clearly better and the correct continuation is 31.Qe7 Qb7 32.Nf4<br />31...Nxf6 32.Rxf6 Rce8<br />If 32...Rfe8 33.Qxe8+ Rxe8 34.Rxb6 <br />33.Qg5 <br /></p>.<p>If 33.Qxe8 Qxf6 34.Qxd7 Qxb2 with advantage for Black<br />33...Rxe2+ A good counter sacrifice by Black. If 33...Qe3 34.Rxg6+ fxg6 35.Qxg6+ Kh8 36.Qh7 checkmate<br />34.Bxe2 Qd4 35.Rd6. White’s sense of danger has deserted him totally. The King is exposed and White should try to tighten his defence. He should have played 35.Rf2 Qxb2 36.Bxb5<br />35...Re8. Black is in the driver’s seat<br />36.Kf1 Qe4 37.Rxd7. If 37.Qd2 Qh1+ 38.Kf2 Qh2+ <br />37...Qxe2+ 38.Kg1 Qe1+ and White resigned as 38...Qe1+ 39.Kg2 Qg3+ 40.Kh1 Re1 checkmate.<br />Diagram 2<br />It is advisable here to think and play rather than hurry with the obvious move!<br />White to play and win<br />1.Bh7+ If Qh7+Kf8 and things are no longer clear cut for White.<br />1. ..Kh8 2.Bg6+ Kg8 3.Qh7+ Kf8 4.Qxf7 checkmate.</p>
<p> When everything is going right, a slight lapse or one bad move is enough to spoil the proceedings and bring about a downfall. Therefore it is important to calculate and think before every move even when the game appears to have been won!<br /><br />In the game which follows, White is comfortable and has also launched an attack on his opponent’s King. However a blunder on the 31st turn swings the tide in Black’s favour.<br /> White: Victor Mikhalevski (2545)- Black: Valery Loginov (2500) Beersheba-St Petersburg, 1998<br /><br /></p>.<p>King’s Indian defence<br />1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 <br />The King’s Indian defence<br /> 4.e4 d6 5.h3 0–0 6.Bg5 Na6 7.Bd3 e5 8.d5 c6 9.Nge2 cxd5 <br />Black can also play 9. ..Qb6<br />10.cxd5 Nc5 11.Bc2 a5 12.a3 a4 13.0–0 <br />If 13.g4 Bd7 14.Kf1 Bd7 <br />13. ..Bd7 14.g4. Till now the players were playing in accordance with theory but now White plays a new move. If 14.Qd2 Qb6 15.Rab1 Rfc8 16.Ng3 Qd8 (If 16...Rc7 17.Be3) 17.Bh6 Bxh6 18.Qxh6 Qf8 19.Qe3 Be8 <br />14...h5 15.f3. Interestingly both players have pushed their King side pawns<br />15. ..b5. Black now acts on the queen side. If 15...Qb6 16.Kg2 Qxb2 17.Rb1 Qxa3 18.Bc1 with advantage for White <br />16.Na2. Perhaps 16.Qe1 appaers better! If 16.Kg2 Nxg4 <br />16...Qb6 17.Kg2. Immediately getting out of the dangerous diagonal. If 17.Be3 hxg4 18.fxg4 Bxg4 19.hxg4 Nxg4 20.Bf2 leads to an unclear position<br />17...Rac8 18.Nb4. Worth a try is 18.Be3 <br />18...Na6 19.Qd2<br />If 19.Nxa6 Qxa6 (19...Nh7 20.Qd2 <br />19...Nxb4 20.axb4 Nh7! 21.Be7<br />If 21.Be3 Rxc2 and if 21.Bh4 Bh6 22.Qxh6 Rxc2 23.Rf2 Rxb2 24.gxh5 g5 25.Bg3 Qd8 with advantage for Black <br />21...Rfe8. If 21...Bh6 22.Qxh6 Rxc2 23.Rae1 <br />22.Bh4 Bf6. An invitation to exchange bishops! Black should have tried 22... ..Bh6 23.Qxh6 Rxc2<br />23.Bxf6 Nxf6 24.Bd3 Kg7 25.Rf2<br />With the intention of doubling the rooks. If 25.g5 Nh7 26.f4 Qd8 (26...exf4 27.Qxf4 Rf8 28.e5 Rce8 29.exd6 Bxh3+) 27.h4 exf4 28.Qxf4 Qe7 <br />25...h4. If 25...Qd8 or 25...Nh7<br />26.Raf1. If 26.Qg5 Qd8 27.Qxh4 Nxg4 28.Qxd8 Ne3+ which works better for Black <br />26...Nh7 27.f4 27. .. exf4 28.Qxf4 <br />If 28.Nxf4 Re7 <br />28...Rf8. If 28...f6 29.g5 <br />29.e5 dxe5 30.Qxe5+ Kg8 <br />Diagram 1<br />31.Rf6. A blunder! White was clearly better and the correct continuation is 31.Qe7 Qb7 32.Nf4<br />31...Nxf6 32.Rxf6 Rce8<br />If 32...Rfe8 33.Qxe8+ Rxe8 34.Rxb6 <br />33.Qg5 <br /></p>.<p>If 33.Qxe8 Qxf6 34.Qxd7 Qxb2 with advantage for Black<br />33...Rxe2+ A good counter sacrifice by Black. If 33...Qe3 34.Rxg6+ fxg6 35.Qxg6+ Kh8 36.Qh7 checkmate<br />34.Bxe2 Qd4 35.Rd6. White’s sense of danger has deserted him totally. The King is exposed and White should try to tighten his defence. He should have played 35.Rf2 Qxb2 36.Bxb5<br />35...Re8. Black is in the driver’s seat<br />36.Kf1 Qe4 37.Rxd7. If 37.Qd2 Qh1+ 38.Kf2 Qh2+ <br />37...Qxe2+ 38.Kg1 Qe1+ and White resigned as 38...Qe1+ 39.Kg2 Qg3+ 40.Kh1 Re1 checkmate.<br />Diagram 2<br />It is advisable here to think and play rather than hurry with the obvious move!<br />White to play and win<br />1.Bh7+ If Qh7+Kf8 and things are no longer clear cut for White.<br />1. ..Kh8 2.Bg6+ Kg8 3.Qh7+ Kf8 4.Qxf7 checkmate.</p>
