KEG: Post III
21... Nc5
"Forced, as Black must prevent Nd6." (Tournament Book) Perhaps. But it is not so clear to me that Black would be significantly worse off with 21...Ne7 [which does indeed permit 22. Nd6] as compared with the position after the text: e.g.22. Nd6 Bc8 23. cxd5 exd5] 22. BxN
Schlechter must have hated having to trade off his dark-square Bishop, but this is the only serious way to play for a win. 22... bxB
23. cxd5 exd5
24. Qxc5
 click for larger viewBlack's isolated d-pawn is a eye-sore. But, at least as a practical matter, Black should be able to offer resistance. von Popiel, however, plays like a deer-in-the-headlights for the balance of the game. This might have been because of the approaching move-30 time control, though I have no way to verify if that was indeed the reason for von Popiel's collapse. 24... Qe7?
Allowing Schlechter to reduce to an end-game was a poor choice. von Popiel should have tried 24...Qa5 or 24...Qb6. 25. QxQ
Of course.
25... NxQ
 click for larger viewNot a position one would like to try to hold against Schlechter. However, and maybe because of the looming move-30 time control, Schlechter momentarily faltered: 26. Rac1 Rfc8
27. Nd4?
A much simpler and probably better way to play for a win was 27...RxR+ BxR 28. e4 fxe4 29, fxe4 a6 30. Nc3 d4 31. Rxd4 and White with his extra pawn should probably be able to win. After Schlechter's poor 27th move, the position was:  click for larger view27... RxR?
"?"--(Tournament Book)
"A decisive blunder. 27...Kf7 was essential." (Tournament Book) Black's position would have been no picnic even with 27...Kf7, but after the text von Popiel was almost certainly lost. 28. RxR Rc8
Probably praying that Schlechter would be willing to swap another pair of Rooks. But this time Schlechter was not about to let Black off the hook. 29. Rb1! Bc6
The Tournament Book considered 29..Rc7, but that would have been a disaster for Black after 30. Ne6! 30. Ba6
30. Rb3 was perhaps even better.
The text left the position as follows:
 click for larger view30... Rc7?
This was von Popiel's last-move before the time control. The Tournament Book is correct that 30...Rd8 was Black's best chance. But, as <Honza Cervenka> has shown, even then Black would have been in big trouble: 31. NxB NxN 32. Rb7. After the horrendous text, as <Honza Cervenka> had noted, Black falls into a deadly pin. 31. Rc1
Utterly crushing. Loss of serious material is now inevitable. 31... Kf7
32. Bb5 BxB
33. RxR
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