Chess

Dy PHIL1DOR 234. 'E., ,VISSERMAN (list Prize, BCPS Tourney, 1964) BLACK. (8 men)

WHITE (ix men)

WHITE to play and mate in two moves; solution next week. Solution to No. 233 (Thomson): P—B 4, threat P x Q. x QxP ch; 2 B—K 7. x QxB ch; 2 R x Q. i . . . Q—R 4; 2 P—B 5. i . . . Q—B 3; 2 Q—R 3 arc main variations in this pleasant problem. Note especially the first variation—key move unpins Black queen who replies by a check which in turn unpins White bishop: a typical mechanism.

At a time when established heads are rolling in the Candidates tournament (Spassky beating Keres 6-4 and—amazing to me—Geller beating the great Smyslov 5}-2i) it is refreshing to see the evergreen Miguel Najdorf achieve one of the best performances of his career at the age of fifty-five—first with 121 out of 15 at Mar del Plata well ahead of the Soviet grand- masters Stein (n) and Averbach (soi). The following game is a good example of Najdorf's aggressive 'Here P—QR 4 is' necessary: Black Must not be allowed to secure space on the queen's side. Q—R 4 so B—Q 3 P—QKt 4! Now effec: of- White's mis- takes is seen: he cannot win a pawn by to P x P, P x P; It B x Kt P because of it .. . Kt x KP and so Black achieves his Q side bualt.

ro 0-0 P x P zr K 3r P —8xP B4 12 Kt—Q 2 . rKt 3t—Q 2

Kg—K: 2 \

. . . The second wrong idea: instead ft—f !Crying to force a further advance in the centre he should consolidate what he has got by R—B s and P—Kt 3.

14 • • • fl—K:: is B—B z ? . . . Quite failing to understand the nature of the position—the bishop is needed to support the centre.

P—K 3 1 16 P x P P x P

z7 B—B 1 R. t--. KR 4 to anticipate the threat of P—Q 4. 18 P—Kt 3 B—Q 5 1 Threatening Ni x Kt P and also 13 x13 ch followed by P—K 4 and P x P.

to Kt—B 3 P—K 4

20 Kt x B BP x Kt 21 Kt—K2 Or 21 Kt—Q 3, Kt xKt ; 22 P xKt, R x Kt P. White is suffering severely for not earlier consolidating his position.. 22 P—Kt 3 IC:—Q2 1, Kt—D4 Now White is forced into

21 . . .

horrible contortions to defend the NP against a concerted attack.

23 B—Kt 2 KB—t—KB1 32 , 24 Kt—B z as rB 2 " OR—B' Threat Q Kt y K11.

26 —Kt i P x P

27 x P KM x P 1 8 R '' KI P . . . Adding needlessly to his loss but32/3B:•;Kt,Kt N13; ass B x P (ag R x Kt ?, Q—B 3), R is P leaves Black a pawn ahead and clearly winning. 28 . . . Q—B 3 1 . aso KC—KB Kg XR 30 Kt

incisive style and shows him completely outplaying his opponent strategically and tactically.

'White, A. FOGUELMAN: Black, M. NAJDORF. Opening, KING'S INDIAN. (Mar del Plata, 1965)

2 P— B 4 P—B 4 z 4 Kt—KB 3 3 P 5 P—K 1Ct 3 4 Kt—QB 3 B—Kt 2

5 Kt—B 3 P—Q 3

6 P—K 4 0-0

7 P—KR 3 . . . This and the next move make up the first wrong idea: he should play B—K 2 and 0-0. P—QR 3

8 B—K 3