25 OCTOBER 1969, Page 42

Chess 462

PHILIDOR

G. F. Anderson (1st Prize, Observer, 1961). to play and mate in two moves; solution nett Solution to no. 461 (Joseph): B-RI, no 1 ... R-B5; 2 K-Kt 4. 1 . . . R-Q5; 2 1 . . . R(4) any other; 2 Q-Kt4. I . . •

2 K-Q7. 1 ...BxP; 2 KxB. 1 ...BanY

2 Q-K7. 1 ... Kt(1) any; 2 K x Kt. I R- K5. 1 ... R(6) any other; 2 Kt-Kt3. 1 ... 2R-B4.1...QxB;2QxQ.1...Q-137; Black interferences by R-B5 and B-03 White king mates are particularly a variations.

A moral tale

Chess platitudes, like all other platitudes. more often true than we like to think: exceptions—the great player is the man „hen they occur in practice, the great is the man who sees new types of position .h the 'old rules' don't apply-but by and the old chess saws are true. When you go I them, you must be very sure that yours a special case-otherwise you find too 2t it is just the same old case again. Here is Wk example.

Gurgenidze. Black, Orev. Opening, Alek- Defence. (Kislovodsk, 1968)

Kt-KB3 2 P-K5 Kt-Q4 Kt-Kt3 4 P-B5 Kt-Q4

ft.t P-K3 6 P-Q4 P-O3 p PxP 8 Q-K2 Q-R4ch?

rine down the primrose path-Black plans ,i,/ate the oldest taboo in the game: 'never

the (2KIP'. The correct move is 8 . . . P after which White has no nore than his a! Iig/it initiative.

Q2 Q-Kt3 10 Kt-KB3! Q x KtP? e reasons for the anti-capture ntaxim are: that this takes time that cannot be spared; that the queen often gets into difficulties after ,apitire; (c) that useful lines are opened for

• e. .411 these points are illustrated in this

kt PxB II . . . QxR; 12 kr5eh, B-Q2; 13 Q-Kt3, Px B; 14 B-B3 wing the queen.

B-K3 12 . x 12: 13 B-B3

83 Q-Kt3 14 QR-Kt1 Q-B3 -B1 Kt-R3 16 Kt-QKt5 Q-Q2 84 Px P 18 KtxKP Q-QI

Black queen has made seven moves R4-Kt3, xP, -K13, -B3, -Q2, -QI to

to her original square; as a result every lite piece is in active, aggressive play and 1, has five unmoved. White now convincingly rimiAtrates that the wages of sin are death. B7c.h! Kt x Kt 20 Kt x P! K x Kt Ktch B-K2 22 R-K I! ... Stronger RI1)x p which would allow Black to bring KR into play with R-KI.

22 ... B-Q2 Forced e.g. 22 . . .

R-KI; 23 Qx Bch, K-B); 24 RxB, Rx R; 25 B-Q6.

23 Q-R5ch K-B1 24 Qx QP B-K1 Other mores are at kast equally bad e.g. 24 . . . B-KKt5; 25 QxP, R-QKt1; 26 Q-K4, B-Q2;

27 R X P and Black is helpless.

25 Q-B5ch B-B3 26 R x Bch! K x R 26 . . . Qx R; 27 I3-Q6ch.

27 Q-R5ch! P-Kt3 28 Q-Kt5ch K-B1

29 B-R6ch K-KU 30 Q-B4ch Resigns