<33.♖xb3 ♔xa6 34.♖a3+ ♔b7 35.♕c3 h5 36.♖a1 ♖a8 37.♖xa8 ♔xa8 38.♕d3 ♔b7 39.b4>

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26...Qg5 Tarrasch thinks 25...Rd4 was a mistake because Black lost a pawn, but after 26...Qf6 27. Nh5 Qxf3 28. gxf3 Rgd8 Black has a better endgame. Black controls the d-file and the bishop pair is soon to be activated (Kb8, Bc8, Kb7, Be6). Of course trading queens and going for a longish endgame wasn't Janowki's style.

29...Rb4: Tarrasch thinks this is a great move but the more traditional Rd2 should have at least as good. After 30. Rxd2 Qxd2 31. Qxf7 Rd8 White won't keep his pawn for long and Black has the d-file.

30. Kh1: White doesn't have a plan at the moment. Maybe he was short on time. 30. Qxf7 Rxe4 31. Qf3 Rb4 would have been risky because the e-pawn is now free to move and discovers the black bishop. The computer likes the endgame for White after the surprising 31. Qxg8 Qxg8 32. Nxe4 Qxb3 33. Rd2. The other rook would come into play along the 3rd rank.

White could have played much sharper with 30. Rd6!? Bxd6 31. cxd6 Qg6 (Qxf7 with a pawn on d6 is something Black probably doesn't want) and now

32. Qe3 Qxd6 33. Qb6+ Ka8 (Bb7 34. Rxa6 Kc8 (Qc7?? 35. Ra8+!) 35. Nf5 Rd8 36. Ra2 is risky for Black) 34. Rxa6+ with a perpetual or

32. Rd1 Bd7 33. Qc3 a5 34. Qxe5 Qg5 35. Qc3 h5 36. f4 Qg6 37. Qc5 Kb7 38. Ra1 Ra8 when White can decide between an easy draw with 35. Nd4 Rg8 36. Nde2 or 36. Rxa5!? with even more complications.

Black doesn't have to take the exchange and can go for the jugular himself but this is questionable. 30...h5 31. Rxc6 h4 32. Nf5 Bb7!? (maybe Rxb3 33. Ne3 Rxb2 34. Qxf7 Rg7 fares a bit better) 33. Rcxa6 Bxa6 34. Rxa6 Rxb3 35. Ne3 b4 36. Ra2 (threat Nc1) Rd3 37. Ra4 Rb3 38. Kh1. White will now activate his knight via c1 and d3 and renew his attack on the queenside.

32...Kb7: Tarrasch thinks this gives White the opportunity for Rxc6 but gives no alternatives. After instead 32...Rxb2 33. Rda3! Kb7 34. Ra7+ Kc8 35. Ra8 Bb8 36. R8a6! Kc7 (36...Kb7 37. Rb6+ Kc7 38. Qc3 Rxe2 39. Qa5 idea Qa8 or 36...Kd7 37. Rd3+ Ke7 38. Nf5+ Bxf5 39. exd5) 37. Qc3 Rxe2 (37...Rb1+ 38. Kh2 b4 39. Qd3 bxa3 40. Qxb1 Rc8 41. Rxa3) 38. Qa5+ Kd7 39. Rb6 White has a strong attack.

33. Ra1 Tarrasch thinks Rxc6 is excellent. He didn't consider that Black can simply refuse with 33. Rxc6 Rxb2. Now both 34. Rxe6 fxe6 and Rcd6 Bxd6 35. Rxd6 (cxd6? Bc4!) Rb3 don't amount to much. White can turn up the heat with 34. Nd4!? where exd4 35. e5 opens the diagonal for discovered checks. Black can barely defend with 35...Kc8 36. Rxe6 fxe6 37. Qa8+ Kd7 38. c6+ Ke7 39. Qa3+ Ke8 40. Qxb2 Qxe5. The rook endgame 41. Qxd4 Qxd4 42. Rxd4 Bxg3 43. fxg3 Ke7 could be a draw.

But Black doesn't have to take the knight and can counterattack with [33. Rxc6 Rxb2 34. Nd4] Bc4 35. Ra3 Qc1+ 36. Kh2 Rb1 37. Rxc7+ (after 37. Nde2 Rxg3! White has to find the only move 38. Qf6! Rxg2+ 39. Kxg2 Qxa3 40. Rxc7+ Kxc7 41. Qd6+ with unavoidable perpetual) 37...Kxc7 38. Ra7+ Kc8 (Kb8 Nc6+ perpetual) 39. Nde2 Rxg3 40. Kxg3 (here Qf6 Rxg2+ 41. Kxg2 Qg5+ favors Black) Qg5+ 41. Kh2 (Qg4+? Qxg4+ 42. hxg4 Bxe2) Bxe2 42. Qxe2 Qf4+ 43. g3 Qc1 44. Qg4+ Kb8 45. Ra8+ Kxa8 46. Qc8+ and perpetual.

Easy game was 33. Rxb3 Kxa6 34. Ra3+ Kb7 35. Ra1 (threat Qa3) Ra8 36. Rxa8 Kxa8 37. b4. White has everything under control and the position is closed. This position favors the knights. Black has many weak squares where White can try to intrude (f5, h5, f6, d6).

35. Ng1. The losing move. Better is 35. Ra6. The threat is Qa3-a5 winning. The only defense is 35...Rb3. 36. Nc3 (plan Rb6+ and Raa6) Rd8 37. Nh5! (a mystery move which has the purpose of denying f6 as a flight square for the black king. This will become important much later. If 37. Rb6+ Kc7 38. Raa6 Qc1+ 39. Kh2 Rxc3 40. Rxc6+ Kd7 41. Qf6 Rxc5 42. Rxe6 fxe6 43. Qxe6+ Kc7 44. Qb6+ Kc8 45. Ra8 Kd7 46. Rxb8 Rxb8 47. Qxb8 Kc6 is closer. Black might have winning chances.)

Pure insanity is 37. Rb6+ Kc7 38. Nd5+!? Bxd5

(only equal is Rxd5 39. exd5! Rxf3 40. d6+ Kd7 (Kc8 41. Ra8 (threat mate in 2) Bg4 (the bishop has to go away and moves to a square where it controls d7) 42. Raxb8+ Kd7 43. R6b7+ Ke6 44. d7 and White wins) 41. Rxb8 Ra3! 42. Rxa3 Qc1+ 43. Kh2 Qxa3 44. Ne4 (threat Nf6#) Bd5 45. Nf6+ Ke6 46. d7 Qc1 (plan Qf4+) 47. Re8+ Kxf6 48. d8Q+ Kf5 (best move) 49. Qd7+ Ke4 (only move) 50. Rc8 Qf4+.)

39. Qe2! (only move that can continue) Ra3! (idea Rxa3 Qc1+) 40. Qb2! Ra7! (does not give up the a-file easily.) 41. exd5 Rxd5 42. Ne4 Qf4 43. Re1 Ra5! (computer move to prevent later sacrifices on c6/b5 in some variants) 44. Qc3 Ra4 45. Nd6 Rxd6 46. Rxb8 Rd5 and it looks like Black can keep a material advantage.

1 Lasker, Emanuel 2674
2 Maróczy, Géza 2658
3 Tarrasch, Siegbert 2643
4 Janowsky, Dawid 2619
5 Marshall, Frank 2610
6 Schlechter, Carl 2591
7 Teichmann, Richard 2561
8 Lovegrove, Walter 2551
9 Bernstein, Ossip 2548
10 Pillsbury, Harry 2546