Annotated Game #353: Striking the second-best blow is not enough

In this first-round tournament game, I achieve an ideal Colle-Zukertort attacking formation as White out of the opening and nearly put my opponent away after a couple of his inaccuracies. However, my initial attack failed to fully connect as I could not find the knockout blow. The second-best move (according to the engine) was enough to keep up the attack's momentum and give me a second chance, but again I failed to find the key idea, which was to shut down my opponent's queenside counterplay possibilities first, before returning to prying open the h-file. My opponent did not give me a third chance and recovered well, taking advantage of an open White backfield to first infiltrate his queen, then decisively with a rook. A valuable game to study for lessons in attacking dynamics and strategic prioritization.

[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "ChessAdmin"] [Black "Class A"] [Result "0-1"] [Annotator "ChessAdmin/Dragon 3.2"] [ECO "D05"] [WhiteFideId "-1"] [BlackFideId "-1"] [PlyCount "120"] [GameId "2320646267293337"] 1. d4 Nf6 2. Nf3 d5 3. e3 e6 4. Bd3 Bd6 5. b3 {this commits White to the Colle-Zukertort setup, which is fine if that is what you want to play. Castling or playing Nbd2 are more flexible options.} O-O 6. Bb2 c6 {Black chooses to go with a Semi-Slav formation.} 7. Nbd2 Nbd7 8. O-O (8. Ne5 {is equivalent and also possible now.}) 8... Re8 {clearly signaling the plan of pushing the e-pawn.} 9. Ne5 $14 {this mechanically stops the advance of the e-pawn and centralizes the knight.} Qc7 {a reasonable-looking move, but White is perfectly happy to reinforce the knight with} 10. f4 $1 $16 {and now has an ideal Colle-Zukertort setup out of the opening, with a kingside attack in view.} Nf8 {my opponent goes into defensive mode, reinforcing h7.} 11. g4 {this was my first real think in the game, and the engine agrees this is best. The short-term point is to chase away the defending Nf6.} N6d7 {jumping back before being pushed.} 12. g5 {although the knight has already removed itself, the pawn still belongs on g5, where it can disrupt Black's defenses.} f6 {this is more of a weakening move than a counter-blow, although it appears that Black has no good options at this point.} 13. Qh5 $18 {bringing the queen into the attack, which hits the hanging Re8.} g6 {I expected this blocking move and had a long think (wrong think) about the possibilities of sacrificing on g6. I eventually calculated (wrongly) that it would not work.} 14. Qf3 {second best, according to the engine.} (14. Bxg6 $1 {I confess that I spent more time examining an initial knight sac here, so did not give this move the attention it deserved.} Nxg6 (14... hxg6 15. Nxg6 Nxg6 16. Qxg6+ Kf8 17. e4 $1 $18 {and the classic Colle e-pawn lever helps pry open the position for White. For example} dxe4 18. Nxe4 {and Black does not have time for} Bxf4 $2 19. gxf6 Bxh2+ 20. Kh1 Nxf6 21. Qxf6+ $18 {with mate to follow}) 15. Nxg6 $18 {during the game, I could not see what White was really threatening here. Indeed, there's nothing immediate that is forcing on the king.} Nf8 {visually looks like it holds, but} (15... f5 16. Nh4 $18 {and the attack continues with White a pawn to the good, with ideas of Kh1 and Rg1 as follow-up.}) 16. Ne5 $1 {with a discovered attack on the Re8} fxe5 17. fxe5 $18) (14. Nxg6 $2 hxg6 15. Bxg6 Re7 $17) 14... f5 $1 $16 {the best defense, attempting to lock up the kingside.} 15. h4 Nxe5 16. fxe5 (16. dxe5 {is also possible.}) 16... Be7 {now I had to think about how to best make progress.} 17. c4 {one of the top engine choices. I play to restrict ...b5 and give myself the option of play in the center and along the c-file.} (17. h5 $5 {would be more focused on following up on the h-pawn push.}) 17... Bb4 {expected, since now I cannot play c2-c3 to block the bishop.} 18. Rf2 {best and most active response, protecting the Nd2. This also mobilizes the rook for potential duty on the h-file.} Qe7 19. Qf4 {this misses the strategic mark, although I still have an edge. The idea was to protect h4 and restrain h7-h6 by Black.} (19. Nf1 {would be more on the mark, with the plan of Ng3 and targeting the h5 square.} h6 20. Ng3 hxg5 21. hxg5 Qxg5 $6 {visually looks good for Black, but} 22. Rg2 $1 {lines up the heavy piece on the vulnerable g-file, enabling threats like Nh5.}) 19... Bd7 20. Nf1 Rac8 {clearly looking to push ...c5, which I should have shut down, as this is Black's only means of real counterplay.} 21. Ng3 {persisting with kingside play first.} (21. c5 $1 $16 {this prophylactic move shuts Black down and strands the Bb4.}) 21... b5 $6 22. h5 $6 {the problem is that my kingside play, while good long-term, does not come quickly enough to maintain my advantage, when compared with the opposite side race to break through.} (22. c5 $16 {now would shut down Black even more fully.}) 22... bxc4 {now Black has a much freer game.} 23. bxc4 $14 Rb8 $6 {this allows me to finally play} 24. c5 $16 {although with the b-file now open, Black still has some counterplay ideas.} Ba5 25. Rh2 {resuming the plan of increased h-file pressure. Unfortunately I missed the next tactic, since I did not consider the possibility of a capture on b2.} (25. Raf1 $16) 25... Rxb2 $1 {while this (temporary) sacrifice does not get Black completely out of his positional hole, it forces an exchange of pieces which reduce my attacking chances.} 26. Rxb2 Bc3 {skewer tactic} 27. Rab1 Bxb2 28. Rxb2 Bc8 $2 {evidently my opponent was concerned about the potential Rb7 penetration. However, this move blocks his own rook from getting active on the b-file and gives me time to swing back to the kingside.} 29. Rh2 $16 (29. Qh4 {first is an improved version of the idea, as White's plan is to double the Q+R on the h-file; no reason to move the rook off the b-file first.}) 29... Qc7 30. Qh4 $1 $18 Re7 {a logical defensive move, and I fail to find the breakthrough.} 31. Ne2 $6 {second best attacking idea again.} (31. hxg6 $1 $18 Nxg6 32. Qh6 {and now the threat of Nh5-f6 is too much for Black to handle.}) 31... gxh5 32. Nf4 $6 {this was the original idea behind Ne2, but I should have reset my expectations of the position after it changed.} (32. Ng3 $1 {avoids the knight trade} Ng6 33. Qxh5 Rf7 34. Qe2 $18 {vacating h5, which the knight can now use for the attack.}) 32... Ng6 33. Qxh5 Nxf4 34. exf4 Qa5 $1 $11 {with reduced material and my queenside vulnerable, along with the possibility of ...Qe1+, Black has now effectively equalized.} 35. Qe2 $2 {pretty much anything else is even. I missed my opponent's next move, which attacks the vulnerable d4 square.} (35. Rg2 Qe1+ 36. Kh2 Qe3 37. Qh4 {is equal but would bait Black.} Qxd3 $4 38. g6 $1 {with a discovered attack on the Re7 and a double attack against h7, with mate to follow.}) (35. g6 Qe1+ 36. Kg2 Qd2+ 37. Kh1 Qxd3 38. Rg2 Kf8 $11) (35. Rb2 $11) 35... Qc3 $1 $17 {it seems incredible, but there is no good way to protect d4.} 36. Qe3 $6 Qa1+ $6 (36... Ba6 $1 $19 {I saw this pin only after I moved, it would have ended the game sooner.} 37. Rd2 Rb7 $19 {the rook will penetrate for a winning advantage and there's nothing White can do to stop it.}) 37. Bf1 $4 {unfortunately, low on time, there was nothing better that I could see. This of course allows the ...Ba6 pin motif again.} (37. Kg2 Qxa2+ 38. Qf2 $11 {I didn't like this during the game because I thought the ending was lost, but the engine calls it equal.}) 37... Ba6 $19 38. Rf2 Rb7 $1 {the winning idea, as noted above.} 39. Kg2 Bxf1+ 40. Rxf1 Rb2+ {now the game is effectively over, but I decide to play out the queen ending in hopes of a swindle.} 41. Rf2 Qxa2 42. Rxb2 Qxb2+ 43. Kf1 Qb1+ 44. Kf2 Qc2+ 45. Kg1 Qb1+ 46. Kh2 a5 $6 (46... Qf1 $19) 47. Qh3 $2 {after this Black has an easy time of it.} (47. Qe2 $17 {aiming for a6 and Black's backfield, while screening the king.}) 47... Qc2+ 48. Kg1 Qd1+ 49. Kh2 Qe2+ 50. Kh1 Qe4+ 51. Kg1 Qxd4+ 52. Kg2 Qe4+ 53. Kg1 Qe1+ 54. Kh2 Qe2+ 55. Kh1 Qd1+ 56. Kh2 Qd2+ 57. Kh1 Qc1+ 58. Kg2 Qxf4 59. Qh6 Qxe5 60. g6 Qg7 0-1