Combined effort is crucial for infiltration

Trying to win a chess game is not about trying to invade and infiltrate the enemy territory at any cost. Solo sojourns into enemy territory do not help and all the pieces have to combine together for launching any sort of attack.

In the game which follows, Black builds up a good position but repeatedly tries to move into White’s territory on numerous occasions with his queen. White attacks the queen and she is forced to retreat which results in loss of moves  referred to as tempo in chess terms. Black after that goes astray and it is White who launches an attack and completes the King hunt.

White: Vlakto Kovacevic (2520) – Black: Juraj Nikolac (2435)
Pula, 1998
Pirc Defence
1.Nf3 g6 2.d4 Bg7 3.e4 d6 4.Bc4 Nf6 5.Qe2 0–0 6.Nc3 c6 7.a4
White opts for a very less frequent played continuation. The usual move is 7.e5 Nd5 8.exd6
7...d5 Black responds with a novelty. Previously played was 7...Qc7 8.e5 Ne8 9.Bg5 d5 10.Bd3 e6 And  7...a5 8.0–0 d5 9.Bd3 dxe4 10.Nxe4 Bg4
8.Bb3 Bg4 If 8...dxe4 9.Nxe4 Nxe4 10.Qxe4 Bf5 11.Qf4 Na6
9.e5 Nfd7 10.h3 Bxf3 11.gxf3
If 11.Qxf3 e6
11...e6 12.f4 c5
A nice advance and good thinking by Black 13.h4 If 13.Be3 Nc6 14.0–0–0 cxd4
13...Nc6 14.dxc5 Nxc5
If 14...Nd4 15.Qd1 (15.Qe3 Nxb3 16.cxb3 Qa5) 15...Nxb3 16.cxb3 Nxc5
15.h5 White has not castled and decides to push on the King side. If 15.Ba2 d4 16.Qb5 dxc3 17.Qxc5 Qd4
15...Nd4 16.Qd1 Nf5
Difficult to understand why Black makes this move when he had two other good moves at his disposal. He should have played 16...Ncxb3 17.cxb3 Nf5 18.Qd3 Rc8. Also he can play 16...Ndxb3 17.cxb3 d4 18.b4
17.Ra3 White is planning to play Ba2,then Ne2 and Rh3
17...Rc8 18.Ba2 Qb6 19.hxg6
Better appears 17. ..Qd2 Qb4
19. ..hxg6
If 19..fxg6 20.Qd2 Qb4
20.Rh2 White has moved both his rooks in unusual way
20...Rfd8 21.Kf1 d4 22.Ne2 Qc6 23.a5 Qe4 Tempting as it may to infiltrate into enemy territory with the queen, this move nullifies Black’s advantage. The correct continuation is  23...Na6 24.Bb1 Nb4
24.Bc4  Qc6 25.Rah3
The rook swings to the other side
25...Qa4 26.b3












26. ..Qa1 Another infiltrating sojourn! Once again Black had a better move in  26...Qxa5
27.Kg2 Over defensive? White can play 27.Qd2
27. ..Qxa5  28.Rh7
Now it is White's turn to infiltrate. Better is 28.Ng3
28...Qb6 A wrong move once again! Black can try 28...b5 29.Qh1 Kf8 30.Ng3 bxc4 31.Nxf5 exf5 32.Rxg7 Kxg7 33.Rh7+ Kf8 34.Qh4 Ke8
And if  28...d3 29.Qh1 Kf8 30.Ng3 Nxg3 31.fxg3  32.Rxg7 Kxg7 33.Rh7+ Kf8 34.Qh4 Ke8 35.Rxf7
29.Qh1 Tripling forces on the King side. 29. ..Qc6+ 30.f3 Kf8 31.Ng3 Nxg3 32.Kxg3 b5
A bad move. Black can consider 32. ..Rb8 33.Rxg7 Kxg7 34.Rh7+ Kf8 35.Qh4
Also winning for White is 35.Qh6+ Ke8 36.Qg7 Rc7 37.Bxb5 Qxb5 38.Qg8+ Kd7 39.Qxf7+ Kc6 40.Qxc7+ Kd5 41.Qxd8+
35...Ke8 36.Qf6 Qc7
Black does not have any defence. If 36...Qc7 37.Bxb5+ Nd7 38.Rh8 checkmate. And if 36...Qb7 37.Bxb5+ And if  36...Rc7 37.Rh8+ Kd7 38.Qxd8 checkmate.











White to play and win
1.Rxe7 Rxe7  2.Rxe7 Qxe7  3.Qg4+ and White wins.

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