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Mariano Sana vs Chris J Mabe
World Open (2400 (2014), Nashville TN, rd 2, Jul-03
Formation: King's Indian Attack (A07)  ·  1/2-1/2

8
7
6
5
4
3
2
a
1
b
c
d
e
f
g
h
White to move.
ANALYSIS [x]
Notes by Stockfish 11 (minimum 6s/ply) 2.d4 d5 3.Nc3 Bb4 4.exd5 exd5 5.Bd3 Nf6 6.Nf3 O-O = +0.34 (31 ply) 2...d5 3.Qe2 Be7 4.g3 c5 5.f4 Nc6 6.Nf3 b5 7.c3 Qb6 = -0.46 (36 ply) 3.g3 Nc6 4.Bg2 g6 5.Nf3 Nge7 6.O-O Bg7 7.c3 d5 = +0.42 (31 ply)better is 3...d5 4.Nh3 Nc6 5.g3 Nf6 6.Bg2 Be7 7.O-O O-O 8.f4 ⩱ -0.53 (31 ply)better is 4.g3 d5 5.f4 h5 6.Bg2 h4 7.Nh3 Qd7 8.e5 hxg3 9.hxg3 = +0.18 (29 ply)better is 4...Be7 5.g3 d5 6.Bg2 Nf6 7.O-O O-O 8.Re1 Qc7 = -0.33 (32 ply)= +0.26 (30 ply)better is 7...d6 8.a3 O-O 9.c3 b6 10.Re1 Bb7 11.Nc4 Qc7 12.Bd2 = -0.46 (30 ply)= +0.16 (26 ply) after 8.Nb3 b6 9.d4 cxd4 10.Nfxd4 Nxd4 11.Nxd4 Bb7 12.f4 d6 better is 8...e5 9.c3 d6 10.a3 a5 11.a4 h6 12.Nc4 Be6 13.Nfd2 f5 = -0.33 (37 ply)better is 9.c3 e5 10.a3 h6 11.b4 a6 12.Nc4 Be6 13.Bb2 Rb8 14.Ne3 = +0.17 (32 ply)better is 9...e5 10.Nc4 h6 11.c3 Be6 12.Rb1 a6 13.Ne3 f5 14.Nd2 f4 ⩱ -0.51 (32 ply) 10.Nc4 Ba6 11.Rb1 Qd7 12.b3 Rad8 13.Bb2 Bxb2 14.Rxb2 = +0.20 (30 ply) ⩱ -0.82 (30 ply)better is 11.Nf1 h6 12.c3 Be6 13.Bd2 f5 14.b4 a6 15.exf5 gxf5 = -0.26 (32 ply) 11...h6 12.Rb1 a6 13.h5 g5 14.Nc4 Be6 15.Ne3 Qd7 16.Nd2 ⩱ -0.81 (31 ply)= 0.00 (37 ply) after 12.Nc4 h6 13.Ne3 Be6 14.h5 Rc8 15.Bd2 Qd7 16.hxg6 fxg6 12...h6 13.Ne3 Be6 14.h5 Rc8 15.hxg6 fxg6 16.Bd2 Na5 = -0.42 (32 ply)= +0.36 (26 ply) 15.b4 cxb4 16.cxb4 Nxb4 17.Ba3 Nec6 18.Rb1 Na6 19.Nc4 = 0.00 (39 ply) ⩱ -1.17 (32 ply) 16.h5 h6 17.Nf3 d5 18.exd5 Nxd5 19.a5 Nxe3 20.Bxe3 g5 = -0.07 (32 ply) ⩱ -1.41 (34 ply)better is 17.Qh3 h6 18.h5 hxg5 19.hxg6 Nxg6 20.Nxf5 Kf7 21.Qh7 Kf6 ⩱ -0.69 (38 ply) ⩱ -1.29 (32 ply) 19...d5 20.Ng2 f4 21.Kh2 d4 22.gxf4 dxc3 23.bxc3 Qxd3 ∓ -1.55 (30 ply)better is 20.Kh2 Rf6 21.Bd2 Raf8 22.Rg1 d5 23.Nc2 Qf7 24.Qxf7+ ⩱ -0.69 (31 ply) 20...f4 21.Qg4 Qf7 22.Nc4 Qf5 23.Qxf5 Nxf5 24.Kh2 d5 ⩱ -1.41 (30 ply) 21.Kh2 Rf7 22.Rad1 d5 23.Nc2 d4 24.cxd4 Qb3 25.Na3 Nxd4 = -0.40 (30 ply) 21...e4 22.dxe4 fxe4 23.g4 d5 24.Ng2 Nc8 25.f5 Qe8 ⩱ -1.38 (31 ply)= -0.41 (32 ply)better is 23.Rad1 d5 24.fxe5 Nxe5 25.Rf1 Nxd3 26.Nxf5 Nxf5 = -0.34 (32 ply) 23...e4 24.dxe4 fxe4 25.g4 d5 26.f5 d4 27.f6 Bxf6 28.Nc4 ⩱ -0.97 (34 ply)= 0.00 (38 ply) after 24.Kg2 Na5 25.Rae1 Nb3 26.Rf2 Kd7 27.Nc4 Nc6 28.fxe5 25.Kg2 Rg8 26.fxe5 Bxe5 27.Rf3 Rdf8 28.Nc4 Ng6 29.Kh1 d5 = 0.00 (39 ply) 25...Rf7 26.fxe5 Bxe5 27.Kf2 Rg8 28.Nf4 Rfg7 29.Rg1 Bxf4 ⩱ -0.79 (32 ply)= +0.30 (35 ply) after 26.c4 Kc8 27.cxd5 Nxd5 28.Nc4 exf4 29.Nxf4 Nxf4 30.Bxf4 better is 28.Kg2 Bb8 29.Nf4 Ne5 30.Rf2 d4 31.cxd4 cxd4 32.Nf1 N7c6 = 0.00 (39 ply) ⩱ -0.69 (34 ply) 29.Kg2 Bf6 30.Nf4 Ne5 31.Rf2 N7c6 32.Rfe2 Rge8 33.Nd5 = 0.00 (37 ply) ⩱ -0.79 (35 ply) 31.Kg2 Bxf4 32.Nxf4 Nb4 33.Re6 Nec6 34.Rxh6 Ne5 35.Nh2 ⩱ -0.70 (36 ply) ∓ -1.61 (42 ply) 33.Nxf4 Nec6 34.a5 bxa5 35.Ra1 Kd6 36.Kg2 Rg5 37.Rd2 Rg7 ⩱ -1.23 (29 ply) 33...Ke6 34.Rf2 Nec6 35.Nf4+ Kd6 36.Kg2 Ne5 37.Nh2 Re7 ∓ -1.99 (38 ply) ⩱ -1.12 (36 ply) after 34.Kg2 Reg8 35.Rxg4 fxg4 36.Nf4 Rg5 37.a5 Ng8 38.axb6 37...Ke7 38.a5 bxa5 39.Ra1 Nc6 40.Ngh2 Ne3 41.Nf3 Rg2+ ∓ -1.85 (35 ply)= -0.50 (36 ply)better is 38...Ke5 39.Ng4+ Kd6 40.Nf2 Rb2 41.Ra1 Nc2 42.Rc1 Nfe3 ⩱ -0.91 (34 ply) 39.Nxe3 Rxe3 40.g4 Kf6 41.Ne4+ Ke5 42.g5 hxg5 43.Nf2 Kf5 = -0.21 (41 ply)-+ -3.53 (36 ply) 52...Nc2 53.Nxb6 Nb4 54.Kf2 Na6 55.Nc8 Kg4 56.Nd6 Kxh5 -+ -2.80 (32 ply) ⩱ -1.33 (32 ply) 53...Kf4 54.Nd7 Nc2 55.Nxb6 Nb4 56.Nd7 Na6 57.Kf2 Kg5 -+ -3.03 (32 ply) ∓ -1.71 (31 ply) 54...Ke4 55.Nf6+ Kf4 56.Nd7 Nc2 57.Nxb6 Nb4 58.Nd7 Na6 -+ -5.35 (41 ply)= 0.00 (56 ply)69.Kg4 Kd3 70.Kg3 Na5 71.Kf3 Kc3 72.Kf2 Kc2 73.Kg3 Nc4 = 0.00 (63 ply)1/2-1/2

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
FEN COPIED

Annotations by Stockfish (Computer).      [35437 more games annotated by Stockfish]

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Kibitzer's Corner
Jul-22-14
Premium Chessgames Member
  Fusilli: Position after 39...Kf5:


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I can't believe I survived this!

10.h4 is a weak move... just the first of several I made throughout the middle game.

Apr-07-15
Premium Chessgames Member
  OhioChessFan: "Call Me Mabe"
Apr-08-15  optimal play: <Fusilli> <I can't believe I survived this!>

"Mabe I'm Amazed"

:D)

Anyway, according to Houdini, it certainly should have been a win to black, although in his defence, it doesn't look straightforward.

Apr-08-15
Premium Chessgames Member
  OhioChessFan: Black trading down was anti-intuitive. You were on the defense, lacked space, and he did exactly what you should have been looking to do.
Apr-25-15
Premium Chessgames Member
  Fusilli: <OCF: Black trading down was anti-intuitive. You were on the defense, lacked space, and he did exactly what you should have been looking to do.>

Yes. I still had an extra pawn. Simplifying to get the pawn back was bad business, considering how I could counterpunch. Maybe he should have played a5 and see to go after my h-pawn before working on simplification.

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