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Bachana Morchiashvili vs Walter Arencibia Rodriguez
4th Al Ain Chess Classic (2015), Al-Ain UAE, rd 5, Dec-26
Indian Game: Anti-Nimzo-Indian (E10)  ·  0-1



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Kibitzer's Corner
Jul-01-17  RKnight: 23 Qf3 is an improvement for white, but it may not be enough.
Premium Chessgames Member
  An Englishman: Good Evening: Solved it; that pin proved most enduring. Felt a little sorry for White, though, because Morchiashvili played with verve and creativity. 12.Ne6 was a nice little try.
Premium Chessgames Member
  ChessHigherCat: ChessHigherCat: The first move has to be Nxe3 to try to capitalize on the Bc5 pin, and if 23. Bxc6 Rxd4 (probably xbetter than the immediate Bc5) 24. Qxe3 Bc5! That's seems too easy for Saturday, what am I missing? It's true Qe3 isn't forced but any other move allows Nxc2+ picking up another rook.
Jul-01-17  Walter Glattke: 24.Qg4 Qc7 25.Rxd8 Rxd8 26.Rf1
Jul-01-17  Walter Glattke: I had 22.-Nxe3 23.Bxc6 Rxd4 24.Qxe3 Bc5
myself, and now 25.Qe6+ Kh8 26.Kh2 Bxc4!? but 26.-Rd6! , while 23.-Nxf4 is dubious, doubtful.
Premium Chessgames Member
  patzer2: <1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.e3 b6 5.Nc3 cxd4 6.exd4 Bb7 7.Bd3 Be7 8.O-O d6 9.d5 e5 10.Ng5 Nbd7 11.f4 h6 12.Ne6?! => This sacrifice is good for no more than equality, and causes Black no problems whatsoever.

Instead, creating more tension and giving White winning chances is 12.fxe5! when play might continue 12...hxg5 13.exf6 Bxf6 14.Ne4 Kf8 15.Nxf6 gxf6 16.Be3 Qe7 17.Bd4 Ne5 18.b3 Rh4 19.Bf5 Bc8 20.Qd2 Bxf5 21.Rxf5 Nxc4 22.bxc4 Qe4 23.Raf1 Qxd4+ 24.Qxd4 Rxd4 25.Rxf6 Rxc4 26.Rxf7+ Kg8 27.R7f6 Re8 28.Rg6+ Kh7 29.Rxg5 Re2 30.a3 Ra2 31.h3 Rc7 32.Rf3 Rg7 33.Rxg7+ Kxg7 34.Rd3 (+0.47 @ 29 depth, Stockfish 8)

<12...fxe6 13.dxe6 O-O 14.exd7 Qxd7 15.Qe2 Rae8 16.Bg6 Rd8 17.h3 Qc6 18.Be3 e4 19.Rfd1 Ba6 20.Rd4?> This is a bad choice as White's game takes a serious turn for the worse after Black's strong reply 20...d5! (-1.06 @ 30 depth, Stockfish 8.)

Better for White is 20.Nb5 d5 21.Nd4 = with fully level chances.

<20...d5! 21.Nxd5>

Not 21.cxd5?? Qxc3! (-4.56 @ 28 depth, Stockfish 8)

<21...Nxd5 22.Bxe4 Nxf4!!> With this surprise move, Black breaks the pin with decisive advantage and solves today's Sunday puzzle.

<23.Bxf4 Qc5!> Having broken White's pin, Black now sets his own decisive pin.

<24.Bd5+ Rxd5!> Passive retreat lets White back in the game after 24...Kh8? 25.Qe3 when play might continue 25...Rde8 26.b4 Qxb4 27.Bxh6 Bc5 28.Bxg7+ Kxg7 29.Qg5+ Kh7 30.Qh5+ Kg7 31.Qg5+ Kh7 32.Qh5+ Kg7 33.Qg5+ Kh7 34.Qh5+ = with a draw by perpetual check.

<25.Qe6+> Other moves are worse. For example 25.cxd5 Bxe2 26.Be5 Bd6 with mate soon to follow.

<25...Kh8 26.Qxd5 Rxf4> As my Grandson's love to repeat, from a phrase they learned in a video, it's time to "PP on the PP" (put pressure on the pinned piece).

<27.Rd1 Rxd4 28.Rxd4 Qxd4+ 1-0> White resigns in lieu of 29.Qxd4 Bc5 with a final decisive pin.

Premium Chessgames Member
  patzer2: Correction: 22...Nxf4!! solve today's <Saturday> puzzle.
Premium Chessgames Member
  agb2002: Black has a knight for two pawns.

White threatens 23.cxd5 (23... Bxe2 24.dxc6) and 23.Bxd5+ (23... Rxd5 24.cxd5).

The position of the White's royal family suggests 22... Nxf4:

A) 23.Bxf4 Qc5

A.1) 24.Be3 Rxd4

A.1.a) 25.Rd1 Rxd1+ 26.Qxd1 Qxe3+ and 27... Qxe4 - + [r+2b vs P].

A.1.b) 25.b4 Qxc4 26.Qxc4 Rxc4 27.Bd5+ (27.Bd3 Rc3 - + [r]) 27... Kh8 28.Bxc4 Bxc4 - + [b].

A.1.c) 25.Bf3 (prevents Rxe4 and prepares Qf2) 25... Qxc4 26.Qxc4 Rxc4 27.Be2 Re4 28.Bxa6 Rxe3 - + [r].

A.1.d) 25.Bd5+ Qxd5 (25... Kh8 is probably better) 26.cxd5 Bxe2 27.Bxd4 Bc4 - + [b vs P].

A.2) 24.Rad1 Rxd4 25.Be3 Rxd1+ transposes to A.1.a.

B) 23.Qd2 Qc7

B.1) 24.Rf1 Rxd4 25.Bxd4 (25.Qxd4 Ne2+ wins) 25... Bc5 26.Bxc5 Qxc5+ - + [n vs P].

B.2) 24.Rxd8 Bxd8 - + [n vs P].

Jul-01-17  Walter Glattke: Correction: 22.-Nxf4 23.Qg4 Qc7 24.Rxd8 Rxd8 25.Rf1 / 22.-Nxe3 23.Bxc6 Rxd4 24.Qxe3 Bc5 possibly better
Jul-01-17  Iwer Sonsch: 22...Nxe3 23.Qxc6 Rxd4 looks positionally good, including the upcoming Bxc4. White doesn't have time for 24.Qxe3? because of 24...Bc5, 25...Rd1++ and 26...Rxa1.
Jul-01-17  Iwer Sonsch: Missed that 25.Kh2 breaks the double threat.
Jul-01-17  RandomVisitor: After 22...Nxf4

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Stockfish_17061704_x64_modern: <7.5 hours computer time>

-4.89/50 23.Qf3 Qf6 24.Rxd8 Bxd8 25.Bxf4 Qxf4 26.b3 Qd6 27.Qd3 Qxd3 28.Bxd3 Bb7 29.Re1 Bh4 30.Re2 Bg3 31.Rd2 Bf4 32.Rb2 Be3+ 33.Kh2 Bc1 34.Rc2 Ba3 35.Rd2 Bd6+ 36.Kg1 Bb4 37.Rc2 Rf6 38.Kh2 Bd6+ 39.Kg1 Bc5+ 40.Kh2 Ba3 41.Kg1 Kf7 42.Kh2 Bd6+ 43.Kg1 Bb4 44.Kh2 g6 45.Rb2 Kg7 46.Kg1 Rf4 47.Re2 Bc5+ 48.Kh2 Rf1 49.Re6 Rd1 50.Be4 Bxe4 51.Rxe4 Bd6+ 52.g3 Rd2+ 53.Kg1 Rxa2

-5.88/50 23.Qe1 Qf6 24.Rad1 Rxd4 25.Bxd4 Qg5 26.Bd5+ Kh8 27.h4 Qxh4 28.Qxh4 Bxh4 29.Bf3 Bxc4 30.Bc3 Bg3 31.Rd7 Rf7 32.Rxf7 Bxf7 33.a3 Bc4 34.b4 Ne2+ 35.Bxe2 Bxe2 36.a4 Kh7 37.a5 bxa5 38.bxa5 a6 39.Kh1 Bc4 40.Kg1 Kg8 41.Kh1 Kf7 42.Kg1 Bd5 43.Kf1 Kg6 44.Kg1 Be6 45.Kh1 Kf7 46.Kg1 Bc4 47.Kh1 Kg6 48.Kg1 Bd5 49.Kh1 Kf7 50.Kg1 Be4 51.Kf1

Jul-01-17  morfishine: <22...Nxf4>

I guess this is an "only-1-move" week for chess problems


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