150
-Q6, PxP 13. B-KKt5, Kt-B4; 14. Q-Q5!, BxB; 15. KtxB, Kt-R3 (QxKt; 16. QxPch); 16. Q R-K1, resigns.] White obtains a quick development and prevents Black from freeing his game by playing P-Q4. After 8. ... BxKt; 9. P-Q5 follows (Moller attack), and after 9. ... B- B3, White wins back his piece by R-K1 (10. PxKt would not be good, as Black could free his game by KtPxP and P-Q4). On the other hand, after 8. ... KtxKt; PxKt, White in addition gains a move, as BxP is countered by Q-Kt3.
As played here, Black succeeds in playing P-Q4, and the game is even. Indeed the isolated QP is a weakness in the White position.
7. ... BxBch
8. QKtxB P-Q4!
9. PxP KKtxP
10. Q-Kt3 QKt-K2
11. Castles KR Castles
12. KR-K1 P-QB3
Now the Knight is securely posted in the centre, and Black can accumulate forces for the attack on the White QP, possibly by Q- Kt3, R-Q1 and Kt-B4.
13. P-QR4
in order to drive the Queen from her Kt3, but this advance is "three-edged," as Master Gregory would say, and the pawn is sure to prove weak in the end-game.
13. ... Q-Kt3
14. Q-R3 B-K3
15. P-R5 Q-B2
16. Kt-K4
Kt-KKt5 would seem to be stronger here. B-B4 would then be answered by 17. B-Q3. After BxB, 18. QxB, White obtains opportunities for a King's side attack, in which the Rook could co-operate via K4 and Kt4 or R4.
16. ... QR-Q1
17. Kt-B5 B-B1
18. P-KKt3?
This produces weak points at KB3 and KR3, and there being as yet no definite threat in Black's Kt-B5, should have been avoided. It is of course difficult to formulate a plan of attack, for there is no weak place in Black's armour. In any case White could safely have played QR-Q1 and Q2 in order to double the Rooks on the King's file or Queen's file according to circumstances. But now as soon as a Rook moves to Q1--and that will have to be done in the end, to support the weak QP--Black's B-Kt5 might become awkward.
18. ... Kt-B4
19. QR-Q1 Kt-Q3!
20. BxKt Kt-Kt4
avoiding an isolate
