Rama: In game 3, Boris evens it up.
I play the Nimzo but not like this. Nimzovitch described it as an "ideal" Queen's Gambit, by which he meant that black would not actually occupy d5 & c5 with his pawns. In other words, a hypermodern opening.
So 5. ... c5, looks alien to me. But what are we to make of 7. e3 ...? The folks in Leningrad have peculiar tastes. After 10. ... 0-0, I prefer black.
The problem is 13. ... e4. Even though it stands for 30 moves, this pawn must obviously fall.
Play revolves around it for a few moves right away; it exerts a cramping influence. By 20. ... Ng7, the players have reached a temporary standoff and the action shifts to the Q-side with 21. b4 ....
Each side wishes to exchange under favorable conditions, which the other side keeps preventing, it is interesting. With 25. ... cxd5, the dust settles. We see the move f7-f5 will shore up the black K-side, and if he can ever play b7-b5 he will have good chances on the Q-side. White has a passed Q-pawn and two open files. What is the winning plan?
Boris chooses 26. d6 .... The discombobulating pawn adavance is the theme of this game. Nonetheless with 28. ... f5, black seems to be consolidating. White avoids 29. Nd5 ..., and plays 29. Nb5 ..., instead.
The threat is Nc7 with double attack on the disconnected enemy Rooks. Good eye, Boris. 29. ... Bxb5, weakens the black K-side by removing a protector, so a Rook moves instead. After 31. ... Bxc7, white's pawn would be even more annoying, so now the other Rook moves.
Finally after 32. Nd5 ..., the Knight comes home where it belongs. With 33. Qb2 ..., it is white who has triumphed. Black has played f7-f5 but it is shaky on the open file; the other open file is occupied by the Queen. The d-pawn is doing good work shielding the Nd5 which cooperates with the Queen along the diagonal.
Black is running out of options and goes for activity with 33. ... Ba4. White tightens the screws with 36. g4 ..., and after 38. Bg4 ..., I think black should have exchanged. 38. ... Bxd5, 39. cxd5 b5, and all is well, although those white d-pawns gotta go!
Instead, 38. ... Bd7, causes a whole cascade of exchanges culminating in 43. Qxe4 ..., which had to feel good. White has an extra pawn and stands better because of his centralization.
45. Qh7+ ..., and 46. Rf1+ ..., demonstrate white's superior mobility and the black King's lack of safety. 50. Rf6 ..., gives black the choice of losing the King or the Queen; he resigns.
The outcome shows that 13. ... e4?, was rash, and that 26. d6!..., was justified. Keres' defensive resources were strained; he cracked. This was important in match-terms.