M m m

If one has weakened his Kingside castled King's position with P-KN3, then the range of the attacking pieces is increased and dangerous mating positions arise.

Belenky-Pirogov (1957): 1 . . . R-K8 and White resigns, since taking with the Queen allows mate from KR5, or with the Rook, on N2.

Positions where the Bishop is in the neighborhood of the King, such as on KB6, are particularly dangerous. In these situations it is very difficult to interrupt or defend the critical squares N2 or Rl.

The Queen check on N4 can be parried by Black by N-N3,

Blom-Jensen (1938). But Black is defenseless against the maneuver 1 Q-R5 N-N3 2 Q-R6. On the other hand, there is another no less typical tactical device available to White in the diagrammed position: I BxPch KxB 2 Q-R5ch K-Nl 3 Q-R8 mate.

With the Bishop on KB6, the attacking side will try to get the Queen to KR6, even if sacrifices are necessary.

In Pogats-Ciric (1962), White hesitated and lost a precious tempo. He played 1 R—Kl? counting on transferring the Queen after the maneuver R-K1-K5. Black, however, found the defensive possibility I . . . P-K4!

Now neither 2 PxP QxB 3 Q-N5 K-R2 nor the immediate 2 Q-N5 R-K3 3 PxP RxB!

works. After 2 BxP R-K3, Black is out of any immediate danger, and the game finally ended drawn.

Nevertheless, in the diagrammed position, White has a forced win: 1 B-K4 Q-N6 (the only answer; if 1 . . . Q-Q2, then, naturally, 2 Q-N5) 2 R-Nl Q-R7 (the Bishop on N2 cannot be taken, but now the way to R6 is open for the Queen) 3 Q-N5! BxB (3 . . . K-R2 4 QxRPch!) 4 Q-R6 QxRch 5 K-B2 Q-B7ch 6 K-N3 and Black gets mated on N2 or Rl.

To clear a path to the King, different tactical devices are used, in particular, the destruction of the enemy King's pawn cover, already familiar to us, which was decisively employed by Keres (Black) against Blumenov (1933).

3 K-Nl B-R7ch does not change anything.

Not 3 .. . Q-K4ch immediately because of 4 K-B2, but now 4 . . . Q-R5ch would immediately follow, cutting off the King's escape on Kl.

4 K-R2 Q-K4ch 5 K-Nl Q-N6ch and mate next move.

The ending of Spielman-Waale (1926) illustrates one of the ways the Bishop can tactically be brought to KB6.

Disaster strikes on KB6, the tactical motif being a pin.

The Knight is attacked three times, and has no defensive reserves.

The Bishop has made it to B6, now it is up to the Queen.

6 Q-B4, Black resigns. The Queen automatically falls upon R6, and the game is over.

From Queen to King Rook

In the course of a game it often happens that the scope of activity of the attacking side is limited by its own pieces or pawns. In these situations, they can be cleared away by sacrifices.

In Dobza-Dinnies (1936) the White KNP is in White's way, covering the Black King. If this pawn were not there, the result of the game would be taken for granted. However, White has at his disposal a combination which eliminates this blockader, opening the diagonal for his Bishop on N2.

1 R-K8ch! RxR 2 Q-Q5ch K-R2 3 P-N8/Qch! RxQ 4 Q-B7ch! and Black resigns.

One more rather amusing clearing example from Illing-worth-Alexander (1931).

fruitful. If the castled King's position has not been weakened by pawn moves, there are a number of ways they can be induced, sometimes by sacrifice. Here are several examples. The "diagonal motif" was elegantly used by Durst against Alster (1965).

By all accounts, the attacked White Queen should retreat, but this does not happen.

I N-Q5!, and Black resigns. Black loses a piece; his Queen is attacked.

You Want to Take, You Don't Want to Take

An attack along the long diagonal often is swift and

An amusing position, from a higher perspective! The Knight can be taken by three pieces. But it simply cannot be taken, cannot be taken . . .

Black is walking a thin line between good and evil. On 1 ... N-Kl or 1... N-R4 White would boldly reply 2 N-B6ch!, which would steer the game into the same lines as actually happened.

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