|KEG: Post II
After Mason's 23...b5, the position was as follows:
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Janowski seemingly comes out on top with the simple 24. Qxb5. Rosenthal in the Tournament Book claims that Mason could then have equalized with 24...Qxd5 25. Qc4 QxQ 26. bxQ Nc6, but Janowski could have played 25. Ne4 (instead of Rosenthal's 25. Qc4) with good winning chances.
25. f3 Qf6
Mason should have brought his Knight into play here with 25...Na6. His position remains critical and active defense was essential.
26. Qe3 Qb6
Once again, Mason should have gotten his Knight into play with 26...Na6.
Janowski had to get his King off the b6...g1 diagonal pronto with 27. Kf1.
This allows Mason all sorts of tactical chances. Prudent and best was 28. h3.
The position was now as follows:
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29. Qxc5?? would lose immediately to 29...Rc8.
The Tournament Book notwithstanding, 29. Nxc5 does NOT lose to d6 and White actually would get the slightly better game after 30. a6 Na6 31. b4!! since 31...dxN 32. bxc5 gives White two monster passed pawns for the sacrificed piece and Black would have to work hard to save the game. Therefore, after 31. b4!! Black should play 31...Rd8. Better still, Black should simply play 30...Nxa2 after 30. a6. Thus, 30. Nxc5 does not give White any advantage.
The Tournament Book is also wrong in stating that 29. Rxc5 is bad for White. After 29...Nxd5 30. Qd4 Nf4 31. Qd6 White has a slight edge.
All in all, White has no way to obtain any significant edge here. The best chances seem to be 29. Rd1 or 29. Rxc5. Janowski's move continues the saga of the advanced d-pawn in this game.
"Here again, if 30. Qxc5 Rc8 and wins." (Tournament Book)
31. Kh1 Qc6
32. bxc4 bxc4
Now Mason has a dangerous passed pawn and at least equal chances.
33. h3 Rc8
Janowski is starting to play with fire. 34. Ng3 was safest and best.
A transparent trap that Janowski sees through. Best was 34...Nf6.
As pointed out by Rosenthal in the Tournament Book, 35. a3 gets crushed by 35...Nd3. This possibility perhaps explains Mason's last move.
36. Rb1 a6
36...h6 was probably best.
37. Rb6 Qc5
38. QxQ NxQ
With the exchange of Queens, a peaceful result appears to be in the cards. But matters are never simple with Janowski, and complications soon arise before Mason is able to secure a draw as I will show in my next post on this game.