<p>Most beginners think that a good defence in a chess game means positioning the pieces around the King or trying to support a piece or pawn at any cost. <br /><br /></p>.<p>Defence however can also be an active one where a player can think about sacrificing a piece or pawn or also by launching a counter-attack.<br /><br />In the game below, White is intent on attacking Black’s King side while the latter cramps his pieces in trying to blunt out the attack passively. Black misses a good chance to launch an active defence and ends up losing the game.<br /><br />White: Oganes Danielian (2450) – Black: Valeri Yandemirov (2545)<br /> Moscow, 1998<br />Grunfeld Defence<br />1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7<br />The Exchange variation of the Grunfeld Defence<br />7.Bb5+ Nc6 8.Nf3 0–0 9.0–0<br />If 9.Bg5 Na5 10.0–0 b6 11.Qd2 c6<br />9...Na5. 10.Ba3. If 10.h3 b6 11.Bg5 Bb7 12.Qe2 c6<br />10...c6 11.Bd3 Be6 12.Qe2. If 12.Bb4 b5 And if 12.Qa4 b5 13.Qb4 Bc4 14.Rfd1<br />12...b5 13.Nd2 a6 14.Kh1 Nb7 15.f4<br />15. ..c5 A good move!<br />16.f5. If 16.d5 Bc8 17.Rac1 e6<br />16...Bc8. If 16. ..Bd7 17.fxg7 hxg6 18.Nf3 Rc8 and if 16...gxf5 17.exf5 Bd5 18.f6 exf6 19.Qh5 h6 20.Rae1<br />17.e5. If 17.fxg6 hxg6 18.Nf3 Bg4<br />17...gxf5<br />If 17...cxd4 18.f6 (18.fxg6 fxg6 19.cxd4 Qxd4 20.Bxe7) 18...exf6 19.Bxf8 Bxf8 20.Ne4 f5 21.Nf6+ Kh8 22.cxd4 Qxd4<br />18.Qh5. White should have played 18.Bb2 f6<br />18. ..e6. Black missed taking advantage with 18...cxd4 19.Rxf5 dxc3 (19...Bxf5 20.Qxf5 Re8 21.e6 f6 22.Qxh7+ Kf8 23.Qh5) 20.Rf3 h6 21.Ne4<br />19.Ne4 . <br /><br /></p>.<p><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />19. ..Bd7. A mistake once again! Black should have played tactically by accepting the sacrificed knight. 19...fxe4 20.Bxe4 h6 21.Bxc5 Nxc5 22.Bxa8 Bd7 23.Bf3 Na4<br />20.Rf3 f6. If 20...fxe4 21.Bxe4 h6 22.Bxb7 And if 20...Bc6 21.Rg3 Kh8 22.Ng5 h6 23.Nxf7+<br />21.Rh3. White is targetting the Kingside<br />21. ..h6. If 21...fxe4 22.Qxh7+ Kf7 23.Bxe4 f5 (23...Rh8 24.Qg6+ Kf8 25.Rxh8+ Bxh8 26.Bxb7+-) 24.Qh5+ Kg8 25.Bxb7 <br />22.exf6 Rxf6. If 22...Be8 23.Qh4 Rf7 (23...fxe4 24.fxg7 Qxh4 25.gxf8Q+ Kxf8 26.Rxh4) 24.fxg7 Qxh4 25.Rxh4 fxe4 26.Bxe4 And if 22...Bxf6 23.Qg6+ Bg7 24.Rxh6 fxe4 25.Qh7+ Kf7 26.Rf1+<br />23.Nxf6+ Qxf6 24.Qf3 Rb8<br />If 24...Ra7 25.Rd1 cxd4 26.cxd4<br />25.dxc5 Nd8. A mistake! Black should have played 25...Qxc3 26.Rd1 Qxa3 27.c6 Bxc6 28.Qxc6 Qd6 29.Rc1<br />26.Rd1 Bc6. If 26...Qxc3 27.Bxf5 Qxf3 28.Rxf3 Bc6 29.Rfd3<br />27.Qg3 Rc8. If 27...e5 28.c4<br />28.Qh4. Much better was 28.c4<br />28...Qxh4. <br />If 28...Qxc3 29.Bxf5 Qa5 30.Bg4<br />29.Rxh4 Bxc3 30.Rxh6 Kg7 31.Rh3 b4 32.Bc1 Ba4<br />Better is 32...Bd5 33.Bxf5 Bxa2 34.Bc2 Bd5 35.Rf1<br />33.Bxa6 Ra8. If 33...Rxc5 34.Rxd8<br />34.Rd6 Be5 35.Rb6 Bc7 36.Bc4<br />Once again White had a better move in 36.Rxb4 Rxa6 37.Ra3 Rc6 38.Raxa4 Rxc5 39.Rc4<br />36...Bxb6 37.Bb2+ Kg6<br />If 37...Kf7 38.cxb6 Rb8 39.Rh7+ Kg6 40.Rh8 Nc6 41.Rxb8 Nxb8 42.Bxe6<br />38.Rg3+ Kh6 39.cxb6 Bc6 40.Bg7+ Kh7. If 40...Kh5 41.Be2+<br />41.Be5 Ra5 42.Bc7 Nf7. If 42...Nb7 43.Bxe6 And if 42...Rc5 43.Bf1 Nf7 44.Kg1 Rc1<br />43.b7 1–0<br /><br /></p>.<p><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />White to play and checkmate<br />1.Rh8 b5 2.axb6 checkmate.<br /><br /><br /></p>
<p>Most beginners think that a good defence in a chess game means positioning the pieces around the King or trying to support a piece or pawn at any cost. <br /><br /></p>.<p>Defence however can also be an active one where a player can think about sacrificing a piece or pawn or also by launching a counter-attack.<br /><br />In the game below, White is intent on attacking Black’s King side while the latter cramps his pieces in trying to blunt out the attack passively. Black misses a good chance to launch an active defence and ends up losing the game.<br /><br />White: Oganes Danielian (2450) – Black: Valeri Yandemirov (2545)<br /> Moscow, 1998<br />Grunfeld Defence<br />1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7<br />The Exchange variation of the Grunfeld Defence<br />7.Bb5+ Nc6 8.Nf3 0–0 9.0–0<br />If 9.Bg5 Na5 10.0–0 b6 11.Qd2 c6<br />9...Na5. 10.Ba3. If 10.h3 b6 11.Bg5 Bb7 12.Qe2 c6<br />10...c6 11.Bd3 Be6 12.Qe2. If 12.Bb4 b5 And if 12.Qa4 b5 13.Qb4 Bc4 14.Rfd1<br />12...b5 13.Nd2 a6 14.Kh1 Nb7 15.f4<br />15. ..c5 A good move!<br />16.f5. If 16.d5 Bc8 17.Rac1 e6<br />16...Bc8. If 16. ..Bd7 17.fxg7 hxg6 18.Nf3 Rc8 and if 16...gxf5 17.exf5 Bd5 18.f6 exf6 19.Qh5 h6 20.Rae1<br />17.e5. If 17.fxg6 hxg6 18.Nf3 Bg4<br />17...gxf5<br />If 17...cxd4 18.f6 (18.fxg6 fxg6 19.cxd4 Qxd4 20.Bxe7) 18...exf6 19.Bxf8 Bxf8 20.Ne4 f5 21.Nf6+ Kh8 22.cxd4 Qxd4<br />18.Qh5. White should have played 18.Bb2 f6<br />18. ..e6. Black missed taking advantage with 18...cxd4 19.Rxf5 dxc3 (19...Bxf5 20.Qxf5 Re8 21.e6 f6 22.Qxh7+ Kf8 23.Qh5) 20.Rf3 h6 21.Ne4<br />19.Ne4 . <br /><br /></p>.<p><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />19. ..Bd7. A mistake once again! Black should have played tactically by accepting the sacrificed knight. 19...fxe4 20.Bxe4 h6 21.Bxc5 Nxc5 22.Bxa8 Bd7 23.Bf3 Na4<br />20.Rf3 f6. If 20...fxe4 21.Bxe4 h6 22.Bxb7 And if 20...Bc6 21.Rg3 Kh8 22.Ng5 h6 23.Nxf7+<br />21.Rh3. White is targetting the Kingside<br />21. ..h6. If 21...fxe4 22.Qxh7+ Kf7 23.Bxe4 f5 (23...Rh8 24.Qg6+ Kf8 25.Rxh8+ Bxh8 26.Bxb7+-) 24.Qh5+ Kg8 25.Bxb7 <br />22.exf6 Rxf6. If 22...Be8 23.Qh4 Rf7 (23...fxe4 24.fxg7 Qxh4 25.gxf8Q+ Kxf8 26.Rxh4) 24.fxg7 Qxh4 25.Rxh4 fxe4 26.Bxe4 And if 22...Bxf6 23.Qg6+ Bg7 24.Rxh6 fxe4 25.Qh7+ Kf7 26.Rf1+<br />23.Nxf6+ Qxf6 24.Qf3 Rb8<br />If 24...Ra7 25.Rd1 cxd4 26.cxd4<br />25.dxc5 Nd8. A mistake! Black should have played 25...Qxc3 26.Rd1 Qxa3 27.c6 Bxc6 28.Qxc6 Qd6 29.Rc1<br />26.Rd1 Bc6. If 26...Qxc3 27.Bxf5 Qxf3 28.Rxf3 Bc6 29.Rfd3<br />27.Qg3 Rc8. If 27...e5 28.c4<br />28.Qh4. Much better was 28.c4<br />28...Qxh4. <br />If 28...Qxc3 29.Bxf5 Qa5 30.Bg4<br />29.Rxh4 Bxc3 30.Rxh6 Kg7 31.Rh3 b4 32.Bc1 Ba4<br />Better is 32...Bd5 33.Bxf5 Bxa2 34.Bc2 Bd5 35.Rf1<br />33.Bxa6 Ra8. If 33...Rxc5 34.Rxd8<br />34.Rd6 Be5 35.Rb6 Bc7 36.Bc4<br />Once again White had a better move in 36.Rxb4 Rxa6 37.Ra3 Rc6 38.Raxa4 Rxc5 39.Rc4<br />36...Bxb6 37.Bb2+ Kg6<br />If 37...Kf7 38.cxb6 Rb8 39.Rh7+ Kg6 40.Rh8 Nc6 41.Rxb8 Nxb8 42.Bxe6<br />38.Rg3+ Kh6 39.cxb6 Bc6 40.Bg7+ Kh7. If 40...Kh5 41.Be2+<br />41.Be5 Ra5 42.Bc7 Nf7. If 42...Nb7 43.Bxe6 And if 42...Rc5 43.Bf1 Nf7 44.Kg1 Rc1<br />43.b7 1–0<br /><br /></p>.<p><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />White to play and checkmate<br />1.Rh8 b5 2.axb6 checkmate.<br /><br /><br /></p>