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Tomas Hermansson vs Judit Polgar
Reykjavik op (1988), Reykjavik ISL, rd 1, Feb-23
Benko Gambit: Declined. Sosonko Variation (A57)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
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Jan-06-05
Premium Chessgames Member
  benveniste: And if Black responds 40 ... Kg7 where's the win?
Jan-06-05  maxundmoritz: <benveniste> After White runs out of checks, Black can force a draw with Bg1+.
Jan-06-05  JeffCollier: 40 ... Kg7 41 Rbg8+ Kg6 42 Rxh6 and there seem to be lots of possibilities for white?
Jan-06-05  Novice713: Aha, I understand now. I see Judit was born in 1976 so here she would have been 11 or 12 years old.
Jan-06-05  Calculoso: <TheWhiteRider> After 42. Qe7+ the king can just take the queen! I am having difficultly seeing the win at this point, as well.
Jan-06-05  hkannan2000: <benveniste> after 40..Kg7,41 Rbg8+,Kf6. Now 42 Qe8! with the idea of 43 Qd8 mate costs black material.
Jan-06-05  JeffCollier: Actually, 40 ... Kg7 41 Rbg8+ Kg6 42 Bd6 looks potent. Black can't move the queen off the f file without losing the rook and ending up in check. I have trouble seeing how black defends against 43 Qe7# or losing significant material.
Jan-06-05  Swapmeet: 42 Qe8 does not work because of the perpetual with Bg1+....I think JeffCollier is right since Bxd6 is the only way to escape the perpetual.
Jan-06-05  Swapmeet: Well not the only way but seems to be the best since it threatens mate.
Jan-06-05
Premium Chessgames Member
  Gregor Samsa Mendel: <Swapmeet>--I think black still has a perpetual after 42 Bd6 Bg1+ 43 Kg3 Bf2+ etc.
Jan-06-05  Swapmeet: Right you are...now its seems white has to take a draw.
Jan-06-05
Premium Chessgames Member
  Gypsy: Black threats of perpetual or even mate
are too strong; the game looks a draw.

<hkannan2000: <benveniste> after 40..Kg7,41 Rbg8+,Kf6. Now 42 Qe8! with the idea of 43 Qd8 mate costs black material.> Unfortunately, 42.Qe8?? Rh1+! Kxh1 43.Qf1+ (Qb1+) Kh2 44.Qg1#.

Jan-06-05  crafty: 40...♔g7 41. ♖hg8+ ♔h7 42. ♖h8+ =   (eval 0.00; depth 15 ply; 750M nodes)
Jan-06-05
Premium Chessgames Member
  Gypsy: Black threats of perpetual or even mate
are too strong; the game looks a draw.

<hkannan2000: <benveniste> after 40..Kg7,41 Rbg8+,Kf6. Now 42 Qe8! with the idea of 43 Qd8 mate costs black material.> Unfortunately, 42.Qe8?? Rh1+! 43.Kxh1 Qf1+ (Qb1+) 44.Kh2 Qg1#.

Jan-06-05  maxundmoritz: 42.Qe8 gives Black the win 42...Rh1+ 43.Kxh1 Qf1+ 44.Kh2 Qg1#.

42.Bxd6 and Black wins the Bishop and can play for the win with 42...Bg1+ 43.Kh1 Be3+ 44.Kh2 Bf4+ 45.g3 Bxd6.

Jan-06-05  maxundmoritz: <Gypsy> 43...Qb1 doesn't work because of 44.Be1
Jan-06-05
Premium Chessgames Member
  chessgames.com: I guess the problem's been cooked; good job guys. We fixed it on the homepage by announcing it as "What's White's best move?"
Jan-06-05  torrete64: if black responds 40...Kg7 then 41. Rg8+ Kf6 42. Rxg6+! fxg6 (if 42...Qxg6 then 43. Qxf1 and white is a piece up) 43. Rf8+ and wins the queen
Jan-06-05
Premium Chessgames Member
  Gypsy: <  maxundmoritz: <Gypsy> 43...Qb1 doesn't work because of 44.Be1 > Absolutely right. There should have been something on the order: "(Qb1+ is another strong threat in some variations)". But I semi-freezed the computer and lost track of my edits...
Jan-06-05
Premium Chessgames Member
  Gypsy: <torrete64: if black responds 40...Kg7 then 41. Rg8+ Kf6 42. Rxg6+! fxg6 (if 42...Qxg6 then 43. Qxf1 and white is a piece up) 43. Rf8+ and wins the queen> A nice try, but fails to 42...Kxg6.
Jan-06-05  torrete64: Gypsy, Now I know why Im blind :-)
Jan-06-05  CHEG: <JeffCollier 42 Bd6 looks potent.> I think you're right Jeff.

Best Line for Black

40 ... Kg7 41 Rbg8+ Kf6 42 Bxd6 Be5 43 Bxe5+ (43..Ke7 mate in 3) Qxe5+ 44 Qxe5+ Kxe5 white has a good endgame up the exchange with a passed pawn.

If perpetual check is attempted.
42...Bg1+ 43 Kg3 white threatens mate Qe7

Any errors in this line? I think white has a won game black can't force a draw.

Jan-06-05  Shams: why not 19.Bxg5
?
Jan-06-05
Premium Chessgames Member
  Gypsy: <CHEG: ... 40 ... Kg7 41 Rbg8+ Kf6 42 Bxd6 ... If perpetual check is attempted. 42...Bg1+ 43 Kg3 white threatens mate Qe7> Then 43...Bf2+ etc. -- as <Gregor Samsa Mendel> points out above.
Jan-06-05  maxundmoritz: <CHEG> 43.Kg3 is answered with 43...Bf2+ and then White either loses the Queen or is mated by 44.Kh2 Rh1+ 45.Kxh1 Qb1+ 46.Qe1 Qxe1 47.Kh2 Qg1#.
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