Time pressure can lead to building of panic and fatal errors

Chess Checks

The ensuing game is a good example where Black has an edge but misses a clear cut winning continuation in time pressure. However White fails to  realize his good fortune and instead make a mistake in time pressure to end on the losing side
 White:  Liang Chong (2405) – Black: Zhang Zhong (2530)
Tan Chin Nam Beijing, 1998

The Dutch Defence
 1.d4 f5 The Dutch Defence. This is one defence which many consider an exciting reply to the Queen’s Gambit
 2.Nc3 Nf6 3.Bg5 d5 4.Bxf6 exf6 5.e3 Be6 6.Bd3 Nc6. 7.Qf3 Qd7 8.a3 0–0–0 9.0–0–0  Both decide to castle early on the queen side. If 9.Nge2 g6 10.h3
  9...Kb8 A new move! . If 9...f4 10.h3 (10.Qxf4 g5 11.Qxf6 Be7 12.Qh6 Bf8 13.Qf6 (13.Qxg5 Rg8 14.Qh4 Be7 15.Qh6 Bg5) 13...Be7) 10...fxe3 11.Qxe3 Na5 12.Nge2 Bf5 13.Ng3 Bxd3 14.Qxd3 g6 15.Qb5 Qxb5 16.Nxb5 c6  
 10.Nge2 With both Kings having castled on the queen side, there is no rush for either to advance their King side pawns

 10...g6 11.Nf4 Bf7 12.h3 h5 If 12...g5 13.Nh5 is good for White
 13.h4 Ne7 14.Kb1 Nc8 15.Qg3 Bh6 16.f3 Qd6 This diagonal looks crowded
 17.Nb5 Qb6 18.Rhe1 If18.Qf2 a6 19.Nc3 Qd6 20.g3
 18...a6 19.Nc3 Qd6 20.Nce2  Intending to get his queen out of the pin
 20...Rhe8 21.Qf2 Nb6 22.g3 Na4 23.Nc1 Qb6 24.Nb3 Re7 25.Ka2  
25. ..Rde8 26.c3 A rather dull looking move! But his move weakens the squares around the King.
 26...Qd6 Vacating the square for his knight. If 26...c5 27.dxc5 Nxc5 28.Nd4
 27.Bc2 Nb6 28.Nd2 If 28.Nc5 Nc4 29.Rd3 g5 30.Ng2 f4
 28...c5 29.dxc5 Qxc5 30.Nb3 Qc7 31.Nd4 Nc4 A good square for the Knight and Black was ready to settle for an isolated pawn for this
  32.Rd3 Re5  If 32...Ne5 33.Rd2 Nc4 34.Rde2
 33.Bb3 If 33.b3 Nd6 34.Red1 Qe7 35.Ng2 (35.Re1 g5 36.Ng2 f4) 35...Bxe3 36.Nxe3 Rxe3 37.Rxe3 Qxe3 38.Qxe3 Rxe3 39.Rd3 Re1 40.Rd1 Rxd1 41.Bxd1 g5 42.f4 Ne4 with Black enjoying a good position
 33...g5 A strong pawn push which threatens to open up things on the King side
 34.Ng2 f4 Black has started to become very aggressive
 35.gxf4 gxf4 36.e4 If 36.exf4 Rxe1 37.Nxe1 Bxf4
 36...dxe4 37.fxe4 Rxe4 38.Rxe4 Rxe4 39.Nf5 Bf8

Diagram 1
 Why? When things are going for Black he misses a good continuation  and one which wins by force. The correct move here is 39...Ne5  40.Rd2 (40.Rd4 Bxb3+ 41.Kxb3 Qb6+ 42.Ka2 f3 43.Nge3 Bxe3 44.Nxe3 Rxd4 45.Nd5 Qe6 46.Qxd4 f2) 40...f3 41.Nxh6 Bxb3+ 42.Kxb3 Qc4+ 43.Kc2 Qa4+ 44.b3 (44.Kc1 Re2; 44.Kb1 fxg2) 44...Qxa3 45.Qb6 (45.Ne3 Qa2+ 46.Kc1 Nd3+) 45...Qa2+ 46.Kc1 Nd3+ 47.Rxd3 Qa1+ 48.Kc2 Re2++; 39...Ne3!? 40.Nd4.
40.Rd4 White makes a mistake here in time trouble! He could have made things difficult for Black with 40. Qf3 Re5 41.Qxf4 Bxa3 (41...Nxb2 42.Kxb2 Bxb3 43.Kxb3 Rb5+ 44.Kc2 Qxf4 45.Nxf4 Rxf5 46.Rd8+ Ka7 47.Nxh5) 42.Rd4 (42.bxa3 Qc5) 42...Qa5 43.Kb1 (43.Bxc4 Bd6+ 44.Kb1 Re1+) 43...Qb6 (43...Bxb2) 44.Ka2 (44.Kc2 Nd6) 44...Nd6]
 40...Bc5–+ 41.Qf3 Rxd4 If 41...Rxd4 42.Nxd4 Bxd4 43.cxd4 Nd2  and White resigned.

Diagram 2

1.Qg4 g6 2.Qd4 and White wins.

Manisha Mohite