4 APRIL 1958, Page 23

Chess

By PHILIDOR No. 147. Specially contributed by J. C. MORRA (Argentina)

BLACK (7 men) WHITE (7 men)

WHITE to play and mate in two moves: solution next .week. Solution to last week's problem by van Dijk: Q-B 1, threat R-Q B 3. 1 . R (3)x Kt; 2 Q-B I (set R-B 3). 1 . . . R (5)x Kt; 2 Q-B 4 (set R-Q 4).

1 . . . Kt x Kt; 2 Q-B 7 (set Q-K 6). I . . K x Kt ;

2 R-Q 5. 1 . . . R x R ch ; 2 Kt x R. I . . KtxR; 2 Q x Kt. Beautiful problem, with all three mates changed after Black self-blocks on Q Kt 4.