19. B-K4 P-B4 20. P-B4!!
This elegant continuation decides the game. If PxP, White simply plays 21. B-Q3, and Black can hardly hope to save the end-game, as his pawns are broken up. If the Queen retreats, however, there follows: 21. PxP, and White obtains two passed pawns for the B and has the superior position.
20. … Q-Kt2 21. PxP PXB 22. RxRch QxR 23. R-KB1 Q-Kt2 24. QxP Q-Kt5 25. R-B4 Q-Q8ch 26. K-B2 Q-Q5ch 27. QxQ PxQ 28. P-K6 B-R3 29. RxP R-B1ch
If K-B1, 30. P-Q6.
30. K-K3 R-B3 31. K-K4 R-B7 32. P-Q6 R-K7ch
He might play K-Q5, after which B-Kt2ch has points.
33. K-Q3 Resigns.
GAME No. 47
White: Tartakower. Black: Asztalos.
Dutch Opening.