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| Move | N | Result | Elo | Players |
|---|---|---|---|---|
| Replay and check the LiveBook here |
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1.c4 A25: English Opening vs King's Indian with ...Nc6 but without
early d3 e5 2.Nc3 Nc6 3.g3 d6 4.Bg2 Be6 5.d3 Qd7 6.Nf3 this
standard-looking move actually scores poorly (around 40 percent) in the
database, due to Black's early formation of a battery on the c8-h3 diagonal. 6.Rb1!? offers an accelerated version of White's typical queenside expanion
plan with b2-b4 coming, only this time with both kings still in the center.
The point is that White benefits from this standard plan, regardless of when
it is started, while keeping the Ng1 at home to keep control of the h3 square. 6...Bh3 7.0-0 h5 aggressive, but in keeping with Black's development; he
clearly will be castling queenside. 8.Nd5 I saw no reason to refrain from
the thematic occupation of the d5 outpost, being slightly ahead in development.
0-0-0 9.b4 a benefit of the previous move, the b4 square is now protected
by the knight. Nce7? under other circumstances this might be a prudent
retreat, anticipating b4-b5, but it causes a tactical problem for Black on the
7th rank, which I spotted. Note the now-unprotected f7 pawn. 9...Bxg2
is a viable option 10.Kxg2 h4= 10.Bxh3± Qxh3 11.Ng5 threatening
the pawn with tempo Qf5 12.e4 Qg6 13.h4 I chose to overprotect the Ng5
here, in order to later free up the dark-square bishop for other action. 13.Be3 would immediately hit the undefended queenside. Kb8 14.h4± with
similar play. 13...Nxd5? a strategic error, exchanging off Black's
defensive piece and opening lines to his king. My opponent probably was
following the general maxim of exchanging pieces to relieve space problems.
Indeed, he is able to follow up by developing an additional piece to e7, but
this is too slow to defend. 14.cxd5+- Be7 15.Be3 right idea, targeting
the weak a7 pawn - but not the most efficient execution, as it end up wasting
a tempo with the bishop. 15.Qa4+- immediately adds more threats. 15...Bxg5 16.Bxg5 16.hxg5!? is strongly preferred by the engine, which isn't
bothered by what looks like potential for kingside counterplay. h4 17.g4 Ne7 18.Qa4+- and here Black can't in fact make any rapid progress down the
h-file, while White's queen and other pieces threaten quickly to break through
against the Black king. 16...f6± 17.Be3 Qe8 sensibly swinging the
queen back to the defense, offering to sacrifice a pawn. However, I don't take
it, preferring to build up piece pressure. 17...Kb8 was objectively a
better defense. 18.Qc2 18.Bxa7!? g5 18...b6?! 19.a4 Kb7 20.a5+-
and Black's king is in major danger. 19.hxg5 fxg5 20.Rc1+- 18...Kb8± 19.a4 19.Rfc1!? would get the rook into play on the c-file and also be a
logical follow-up. 19...Qe7?! d7 is a more logical square, keeping the
queen on the valuable e8-a4 diagonal. 20.a5 continuing the march of the
pawns toward Black's king position. g5? further deteriorates the position,
comments Komodo via the Fritz interface. Objectively this is the case, but in
practical terms it successfully distracts me from breaking through on the
queenside, which I could do immediately. 20...Qd7!?+- 21.hxg5 21.a6! c5 22.bxc5 dxc5 23.axb7+- 21...fxg5? again, technically a blunder,
but it continues the distraction. 22.Kg2 22.a6 still wins almost
immediately. 22...h4 while still not spotting the winning a6 idea, I still
now am able to neutralize the push easily and maintain the advantage. 23.Rh1 g4 Black prepares h3. Now I really start to give away the advantage by
redeploying my pieces away from the queenside - unnecessarily. 24.Qe2?! 24.a6 ends the debate h3+ 25.Kh2 and Black can do nothing more. 24...h3+± 25.Kh2 now if Black hurries, he can hold reasonably well on the
queenside. However, he doesn't find the best path. Qg7?! 25...Nf6 getting
another piece into the game. 26.b5 Rc8 27.Rhc1± 26.b5+- Rc8 27.Qc2
a less effective and slower way of exerting pressure. 27.Bxa7+ I recall
looking at the idea, but ultimately not seeing how I could break through. Kxa7 28.b6+ Kb8 29.Rhb1 Nf6 30.a6+- 27...Ne7 28.Rhb1 White prepares the
advance b6 Qf6 29.Qb2?! a useless and time-wasting move. I did not ask
myself what the Qf6 can now do for Black. 29.Qe2!? going back to the
previous square, where the queen pressured the g4 pawn, would be better,
defending against Black's next. 29...Qf3 my opponent finds the best
idea in the position, with a mate threat on g2. 30.Rg1 forced Rhg8? 30...Rh7 would help defend along the 7th rank. 31.b6? this fails
against the best defense. 31.Ra2 is rather subtly found by the engine,
reinforcing the 2nd rank and defending f2 again, allowing for possible moves
by the bishop. For example Rg7 32.Qa3 a key move, threatening to break
through on the a-file and also pressuring d6, meaning the c7-pawn can't move
without negative consequences for Black. My opponent has no good moves at this
point, with both b6 and Bxa7+ as threats. 31.Qa3 immediately also is good,
if not as incisive. 31...a6 the best response. 32.bxc7+ Rxc7= 33.Rab1 I now have pressure but without the Rg1 in play and the Be3 no longer
threatening anything, there is no way for me to make progress...unless my
opponent makes a mistake. Nxd5?? this in fact would have been a smart play
in some earlier variations, but now sacrificing the piece for two pawns is
completely unnecessary and gives me a winning position. 33...Nc8=
is one move that holds everything together. 33...Rf8 is another. 33...Rg7 is another. 34.exd5+- Qxd5 35.Qb6 the problem for Black is that he
no longer has the knight to help defend against the queen penetration. Kc8 36.d4 it's nice to see that Komodo agrees this is the best move. I've mentally
moved it up a gear, since Black's blunder. exd4 37.Bxd4 Rf8 38.Rbd1
getting the rook into play, as it was not being effective on the b-file. Qf3 39.Qxd6 Rc2 I give my opponent credit for fighting until the end. 40.Qe6+
I thought for a while here and chose a relatively simple and safe winning
continuation. Kb8 41.Qb6 protecting against the sacrifice on f2 and also
lining up the fatal blow. Rfc8 42.Qa7+ Kc7 43.Be5+ Kc6 44.Qb6# 1–0
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| White | EloW | Black | EloB | Res | ECO | Rnd |
|---|---|---|---|---|---|---|
| ChessAdmin | - | Class C | - | 1–0 | A25 |
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