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| Jun-22-20 | | agb2002: Black is two pawns up.
White threatens Rxe5.
Black can prepare a winning knight fork with 34... Rb1+: A) 35.Kxb1 Nxc3+ and 36... Nxe2 - + [3p].
B) 35.Ka3 Rb3+ 36.Ka2 Nxc3+ 37.Ka1 Rb1#.
C) 35.Ka2 Nxc3+ 36.Ka3 Rb3#. |
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| Jun-22-20 | | saturn2: White need not take the rook but then
34...Rb1+ 35. Ka3 Nxc3 36. Rxe5 Rb3 mate |
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| Jun-22-20 | | sophiephilo: Comforting Mondays. |
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| Jun-22-20 | | groog: Pettersson is still alive? 119 y.o. hmmm that's not bad. |
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| Jun-22-20 | | drollere: after 34. .. Rb1+ the position is amusing; if black retreats to a3 then he is mated on a1, if he retreats to a2 he is mated on a3, and if he takes the R he loses the p on c3, returns the R and yields the game. |
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| Jun-22-20 | | Brenin: A nice, easy start to the week. White's treatment of the opening was very strange, sacrificing both central Ps and the Q in order to promote a P to a Q, which immediately disappears in a Q exchange. The position after move 14 was resignable. Back to last week's theme of how not to play White against the French? |
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Jun-22-20
 | | OhioChessFan: 23. Nxe5 and White is still breathing. How don't you make that move? |
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Jun-22-20
| | OhioChessFan: I see <syra> mentioned 23. Nxe5 and also the crushing 21...d3. |
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| Jun-22-20 | | Brenin: <syracrophy>: Perhaps Black valued the three pawns he would lose with 21 ... d3 22 Rxd3 e4 23 Rxd5 exf3 24 Bxf3 more than the piece he would gain. And maybe he justified 22 ... Ne7 by 23 Nxe5 Kd6, attacking the N on e5 and the P on c3, but overlooking 24 Nc4+, with dxc4 impossible since the d-pawn is pinned. Not exactly a high-quality game. |
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| Jun-22-20 | | stacase: After a few seconds of not not seeing much, "It must be a Knight fork set up" comes to mind, and voila 34...Rb1+ there it is, and Black's Knight is poised to gobble up the remaining Pawns. |
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| Jun-22-20 | | Pedro Fernandez: <<groog>: Pettersson is still alive? 119 y.o. hmmm that's not bad.> The Valkyrjas take care of him, they don't want he goes to the Valhöll yet, my dear <groog>. |
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| Jun-22-20 | | Diademas: The difficult level is mondayesque, but just winning a pawn made me look for something else. |
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| Jun-22-20 | | Cibator: Position was pretty much resignable as it stood, even without the simplifying tactic. |
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| Jun-22-20 | | TheaN: Black simplifies this to a point where White has no game left after <34....Rb1+ 35.Kxb1 (Ka2 Nxc3+ 36.Ka3 Rb3#; Ka3 Rb3+ 36.Ka2 Nxc3+ 37.Ka1 Rb1#) Nxc3+ 36.Kb2 Nxe2 -+>. I do concur with <Cibator> that this might not have been necessary at all. Best move indeed (-8) but 34....Rxg5 35.Re5 Kd6! 36.Re2 (Rxf5 Rg2 with Rxb2/Ne3) Rxf3 37.Nd4 Nxc3! -+ is -6 so this was done as is. |
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| Jun-22-20 | | zb2cr: 34. ... Rb1+ does the trick. If White plays 35. Kxb1, Nxc3+ regains the Rook , leaving Black ahead by 3 Pawns. If White declines by 35. Ka3, he ends up in even worse case after 35. ... Rb3+; 36. Ka2, Nxc3+; 37. Ka1, Rb1#.
35. Ka2 is simply fatuous, as Black gets to mate in two by 35. ... Nxc3+; 36. Ka3, Rb3#. |
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| Jun-22-20 | | mel gibson: I saw that but it took me over 10 seconds.
Black simplifies to have a winning game. |
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| Jun-22-20 | | Predrag3141: <And maybe he justified 22 ... Ne7 by 23 Nxe5 Kd6, attacking the N on e5 and the P on c3, but overlooking 24 Nc4+, with dxc4 impossible since the d-pawn is pinned.> Stahlberg, who beat Najdorf, Nimzovich and Bronstein, allowed his opponent to win a pawn and destroy his mobile center. If 22 … Kd6, walking into a pin, was too scary, why not 22 … e4? |
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| Jun-22-20 | | get Reti: There’s one move that checks, try it and it works! |
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| Jun-22-20 | | Nullifidian: In the present position, there's not enough material on the board to force an immediate mate, so I looked for a tactical shot that would allow black an edge. 34... ♖b1+
The sacrifice can't be declined because 35. ♔a3 runs into Anastasia's mate: 35... ♖b3+ 36. ♔a2 ♘xc3+ 37. ♔a1 ♖b1#
35. ♔a2 gets there one move sooner:
35... ♘xc3+ 36. ♔a3 ♖b3#
So after 35. ♔xb1+, ♘xc3+ forks the king and the rook. Black picks up a pawn and a simplifies into a winning endgame with a large material advantage (and now I'm going to play through this game to see how black ended up with so many pawns). |
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| Jun-22-20 | | Nullifidian: So basically the problem was that white tried to play like Tigran Petrosian and it didn't work out for him. The speculative attack launched at the beginning led to a series of passive exchanges white could ill afford and then white missed his best drawing chances. Honestly, what was the point of 13. ♕xd8+? If you've sacced that much material just to bring another queen into the game, you should hang onto it with ♕xg7. I don't think Pettersson spotted that after 13... ♙dxc3 14. ♕xg4 ♙cxb2 that he had the zwischenzug 15. ♕a4+. 15. ♖b1? would have been a blunder, because of ♕a5+, but after ♕a4+ that resource doesn't exist anymore. The last chance white had to make a fight of it was probably move 23, when the straightforward ♘xe5, breaking up the strong pawn center, was the best move. I'm thinking he was probably worried about ♔d6, but missed the fact that ♘c4+ evades the threat with tempo because the d-pawn would be pinned. The only way black could capture the knight would be with ♖xc4, which would lose the exchange because after ♗xc4 the d-pawn would still be pinned and couldn't capture back. |
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| Jun-22-20 | | DrGridlock: Black is already two pawns up - but after the (very temporary) rook sac (Rb1+) and knight fork (Nxc3 / Nxe2) he's up 3 pawns with just knights on the board. Kind of a positional parlay, but a decisive one nonetheless. |
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| Jun-22-20 | | KingMJA: Tougher than the usual Monday fare. |
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| Jun-22-20 | | stacase: < get Reti: There’s one move that checks, try it and it works!> Excellent point(-: Saw that as the only check but didn't notice that it set up the fork. Well what did you expect from a wood pusher like me? But when there was nothing else, after a few seconds of casting about, further examination said yes the Knight forks and will gobble up the remaining pawns. So that must be it. |
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| Jun-22-20 | | thegoodanarchist: < Diademas: The difficult level is mondayesque, but just winning a pawn made me look for something else.> Not just a pawn; black gets a third passed pawn too, with a crushing position. |
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Jun-22-20
 | | gawain: The key is to give up on mate and see that Black wins most easily by simplifying. And there is a way to force it. |
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sac: 34...Rb1+