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Anna Muzychuk vs Ori Kobo
"The Sound of Muzychuk" (game of the day Feb-10-2020)
Gibraltar Masters (2020), Catalan Bay GIB, rd 10, Jan-30
Sicilian Defense: Paulsen. Bastrikov Variation (B47)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Feb-01-20  LivBlockade: Great game!
But what if Black had tried 31...Rd8?
See the following analysis position, with White to move.


click for larger view

Despite her pinned Queen, White actually has a forced checkmate. Can you find it?

Feb-01-20  me to play: 1.Bxg7ch Kg8 2.Qxd8ch Bxd8 3.Re8ch Qf8 4.Rxf8ch Kh7 5.Rh8 mate.
Feb-01-20  wtpy: Or 32 Bg7+ Rg7 33 Re8+ Re8 34 Qg7#.
Feb-02-20
Premium Chessgames Member
  jith1207: And if 31...Rd8 32. Bxg7+ Rxg7 33. Re8+ Kh7

34. Rxg7#

It looks very complicated few moves backward to foresee all the lines.

I could understand how Kobo feel into this trap.

Feb-02-20
Premium Chessgames Member
  jith1207: **fell
Feb-10-20  ajile: If 28..Bxe1?? then 29.h6! crushes Black immediately.


click for larger view

Analysis by Rybka 3 32-bit :

1. +- (6.92): 29.h6


click for larger view

29.Rxg7 also wins:

2. +- (5.00): 29.Rxg7 Rxg7 30.h6 Rff7 31.hxg7+ Kg8 32.Qa8+ Rf8 33.gxf8Q+ Qxf8 34.Qg2+ Kf7 35.Qd5+ Ke8 36.Qe4 Qf7 37.Qxe1 Qd5

Feb-10-20  goodevans: Black has so many counterattacking possibilities. Muzychuk had to be confident that none of them would work before launching her attack. Great stuff.
Feb-10-20  goodevans: To back up the sentiments of my earlier post I've done a little SF analysis to see just what a minefield Muzychuk was treading through when she launched her attack.

The analysis isn't exhaustive but, as far as I can tell, from <23.Bxf5> onwards there were only three white moves where a different choice wouldn't have lost white's advantage. That means she made 12 <must do> moves in a sequence of 15.

The only moves where white seems to have any choice are:

<29.Re2> - other R moves also work.

<33.Qxg1> - 33.Rc7 also keeps a winning advantage, but nothing else.

<36.Rxf2> - 35...Bf2+ was a desperation sac and it doesn't matter which piece white takes with.

Feb-10-20  Damenlaeuferbauer: This game shows, how incredible strong Anna Muzychuk really is. She belongs to the best female chess players in the world and is an example par excellence, that beautiful women can be very intelligent and smart.
Feb-10-20  RandomVisitor: 21...h5 or 22...h5 were better moves for black, after this point white has the solid advantage

After 22.Qh3 <h5>


click for larger view

Stockfish_20012509_x64_modern:

<44/71 13:09 +0.27 23.b4 Bf2> 24.Re2 Bb6 25.a4 Rxe5 26.Rxe5 Qa2 27.Kd2 Qb2 28.Ke2 Bd4 29.Re7 Bd5 30.Rd7 Re8+ 31.Kf1 Be6 32.Rd6 Qxb4 33.Rxe6 Rxe6 34.Qxf5 Rf6 35.Qd5+ Kf8 36.Qd8+ Kf7 37.Kg2 Qd6 38.Qxd6 Rxd6 39.axb5 axb5 40.Bxb5 Be5 41.Bc4+ Kf8 42.Rf1 Rg6+ 43.Kh3 Bc7 44.Be2 Rc6 45.c4 Ke7 46.f5 Be5 47.Rg1 Ra6 48.Rg6 Ra3+ 49.Kg2 Bf6 50.Bxh5 Bxh4 51.Re6+ Kd7 52.Bf3 Rc3 53.Bd5 Bf6 54.Rb6 Bd4 55.Ra6 Rb3 56.Ra8 Kc7 57.Re8

44/36 13:09 0.00 23.Re2 Bb6 24.Kb1 Re7 25.Bc3 Rxe2 26.Bxe2 Re8 27.Qf1 Re3 28.Rd6 Be4 29.Rxb6 Rxc3 30.Bd3 Rc6 31.Rxc6 Bxc6 32.Qe2 Qg6 33.Qe5 Be4 34.Bxe4 fxe4 35.b3 Kf7 36.Kc1 Qg4 37.Qd5+ Kf8 38.Qa8+ Kf7

Feb-10-20
Premium Chessgames Member
  Honza Cervenka: If 27...Qxh5, then 28.Qf7! Rg8 29.Bxg7+! R8xg7 30.Re8+ Rg8 31.Rxg8+ Rxg8 32.Qf6+ with mate.
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