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Aug-13-10
 | | Fusilli: A little puzzle.
Fusilli v Someone, ICC 2010
Position after 26...Re3:
 click for larger viewWhite to play and win |
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Aug-18-10
 | | Fusilli: Hmmm... no takers. :-(
 click for larger view27.Qxe3! dxe3 28.Bxg7+ Kg8 29.Rxd8+ Rxd8 (threatens back-rank mate) 30.Rf8+! Rxf8 31.Bxf8 Kxf8 32.Kf1 and White won the King + Pawn endgame. |
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Aug-18-10 | | hms123: <Mariano> Sorry to be late. Stockfish takes a different approach after <Qxg6>: click for larger viewAnalysis by Stockfish 1.8 JA: 21 ply
1. (93.05): 1...Qf8 2.Rxd4 Re1+ 3.Kf2 Re5 4.Rh4+ Kg8 5.Rhf4 Rc8 6.Rxf8+ Rxf8 7.Bxe5 Rxf4+ 8.Bxf4 Kh8 9.Be5 Bxe5 10.Qh5+ Kg8 11.Qxe5 Kf7 12.Qg3 Ke6 13.Qg6+ Kd5 14.Qxa6 Ke5 15.Ke3 Kd5 16.Qb5+ Ke6 17.Kd4 2. (#8): 1...Qg8 2.Rxd4 Re1+ 3.Kf2 Re2+ 4.Kxe2 Re8+ 5.Kf1 Re1+ 6.Kxe1 Qe8+ 7.Kd1 Qe2+ 8.Kxe2 Bxd4 3. (#7): 1...Qf6 2.Rxf6 Bxf6 3.Qxf6+ Kh7 4.Bxd4 Ra7 5.Bxa7 Re4 6.Rd7+ Re7 7.Rxe7+ Kg8 4. (#6): 1...Re1+ 2.Rxe1 Qg8 3.Re4 Qf8 4.Rxf8+ Rxf8 5.Re7 Rf1+ 6.Kxf1 Kg8 |
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Aug-19-10
 | | Fusilli: Yeah, Stockfish's version is shorter and bloodier. Mine has the beauty of forced moves. Are you ready to begin teaching?? I'm not! I'm "DGSing" nearly full time these days! |
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Aug-19-10 | | hms123: I just came from a 3-hour orientation meeting for advisor's of incoming students. Painful. I am ready to teach though--I found my notes! |
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Sep-07-10
 | | OhioChessFan: FWIW, I chose Qxe3. I decided to tweak the position a little. click for larger view
And now Qxe3 is clearly best and probably only winning move. |
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Sep-07-10
 | | OhioChessFan: I don't get why Rc5 doesn't work in the Nguyen/Giri game.
48. Rc5 Rd8 (48...Rd4+ 49. Ke3 Rd8 50. Ke4) 49. Ke4 and game over.
Any King move for Black's 48th and 49. c7 wins. |
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Sep-08-10
 | | Fusilli: <OCF> Nice improvement on my ICC game puzzle with 1.Qxe3. I think you are right and now that's the only way to win. On the Nguyen-Giri game, following your line, Black plays 49...Ke6 and the resulting position is this:  click for larger viewI think it is not that easy for White to make progress now. Pushing the pawn to c7 will result into ...Rc8, ...Kd7 and the pawn falls. If 50.Re5+ Kf6. If 50.Rh5 Rb8. Even if 50.Rc1 Rc8 51.Ra1 Rc7. Do you see a way to progress? |
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Sep-08-10
 | | OhioChessFan: 48. Rc5 Ke6 49. Re5+ Kf6 50. Rd5 Rook moves 51. Kd4 is an easy win |
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Sep-08-10
 | | Fusilli: <OCF> Well, that is correct. I am not sure then why GM Benjamin said that 48.Re8 is the way to go and 48.Rc5 was more complicated. I just set up the position before White's move 48 on my computer and Fritz says both 48.Re8 and 48.Rc5 are decisive. |
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Sep-09-10
 | | OhioChessFan: Yeah, I am shocked GM Benjamin missed a fairly easy endgame win. I was sort of wondering what I was missing. I skipped 48..Rd8 49. Ke4 in my last post, but I can tell you followed what I meant. |
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Sep-15-10
 | | Fusilli: I was 12 growing up in Buenos Aires in 1979, and just beginning to play in chess tournaments, when he trounced almost everybody at the 1979 Clarin tournament. His score was +9 =4, three full points ahead of Najdorf, Miles and Andersson, who shared 2nd-to-4th place. He beat Spassky, Petrosian, Andersson, Panno, Quinteros, Ivkov, Rubinetti, Franco and Tempone, and drew with Najdorf, Miles, Gheorghiu and Lombardy. None of the draws were grandmaster draws, to which some of the other contenders seemed addicted. Bent Larsen was like a god. It was simply amazing. I will be posting positions from his games at the 1979 Clarin tournament. |
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Sep-15-10
 | | Fusilli: Buenos Aires (Clarin) 1979, round 1, Larsen vs Ulf Andersson, 1979 Position after 37.Qa3:
 click for larger viewBlack blundered a point earlier, but by now the position is even (Fritz says dead even at +0.11). But now Andersson commits suicide (maybe under time pressure): 37...Qd4+ 38.e3 Ra7?! (retreating with the queen was safer) 39.Rb8+ Kh7:  click for larger view40.Rh8+ Kxh8?? 1-0 (in view of 41.Qf8+). |
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Sep-15-10
 | | Fusilli: Buenos Aires (Clarin) 1979, round 2, Ivkov vs Larsen, 1979 Position after 27.Bc1:  click for larger viewFrom the computer point of view, the position is even, but from a human point of view, it is more difficult to play it with the white pieces than with the black pieces. Larsen surely understood that, and went for 27...Nb2, which forces the trade 28.Bxb2 Bxb2, after which White has to find the good moves while Black is annoyingly trying to create threats inside White's territory. Eventually, Ivkov fell into a simple trap. One suspects time pressure. Position after 32...Qb2+:  click for larger view33.Kg3?? h4+! 34.Nxh4 (unless you prefer to be mated by a humble pawn after 34.Kxh4 Qf2+ 35.Kg5 f6#) Be1+ 35.Kf3 Bxh4 0-1 Incidentally, this could have been the Larsen Monday puzzle this week. |
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Sep-15-10
 | | Fusilli: Buenos Aires (Clarin) 1979, round 3, Larsen vs Quinteros, 1979 This game illustrates Larsen's tenacity:
Position after 40...Nh6:
 click for larger viewBlack has two passed pawns and White has none! Fritz evaluates this as very slightly better for Black. Position after 47...Kf6:
 click for larger viewNow White got a passed pawn, and the position is dead even (Fritz evaluates it at 0.00). Position after 59.a4:
 click for larger viewProducing a second passed pawn for White. Here it's interesting that after 59...Kf6 Fritz chooses 60.a5 and evaluates the position as +0.87, when it is obvious that Black can just block the whole board and it would be a draw. Larsen played 60.axb5. Position after 67.Ra1:
 click for larger viewBlack is in trouble. Somewhere along the way Quinteros made the wrong blocking choices, it seems. Position after 74.Rh1:
 click for larger view1-0 |
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Sep-15-10
 | | Fusilli: Buenos Aires (Clarin) 1979, J A Rubinetti vs Larsen, 1979 Not much to show from this game. Larsen won without much effort. |
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Sep-15-10
 | | Fusilli: Buenos Aires (Clarin) 1979, Larsen vs Najdorf, 1979 At 69, "El Viejo" was still a formidable opponent. In fact, he finished the tournament undefeated. Larsen was in classical mode... Position after 5.f4:
 click for larger viewPosition after 28...Qc6:
 click for larger viewBy now, Najdorf has equalized.
Position after 36...a4:
 click for larger viewWhite is the one who needs to equalize now. He did. Final position, after 56.Rxg5:  click for larger viewWho knows, if Najdorf had been younger maybe he would have played 56...Bd7. While the position is a book draw, there is only one side at risk of losing (see for example Leko vs Ivanchuk, 2008). But El Viejo was tired. |
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Sep-15-10
 | | Fusilli: Buenos Aires (Clarin) 1979, Larsen vs Petrosian, 1979 Larsen outplays Petrosian in a final positional battle. Position after 42...Be6:
 click for larger viewTaking the bishop leads to a drawish ending, e.g. 43.Bxe6 fxe6 44.Nf1 Ka6 45.Nc4 and here either 45...Kb5 46.Ke2 Kb4 47.Kf2= or 45...Kxa5 46.Nc4+ = Larsen played 43.Bf1 and proceeded to maneouver until he was able to place his knight on d6 via c4. Position after 55...Kb8:  click for larger viewNow it's a different story.
56.Bxe6 fxe6 57.Nf7. See the game for the remaining moves... Black's position falls apart. 1-0 in 65. |
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Sep-15-10
 | | Fusilli: I forgot to add round numbers... Rubinetti-Larsen was in round 4, Larsen-Najdorf in round 5, and Larsen-Petrosian in round 6. |
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Sep-15-10
 | | Fusilli: Buenos Aires (Clarin) 1979, round 7, Spassky vs Larsen, 1979 A rather undignified defeat for Spassky. Position after 12...Rg8:  click for larger viewHere Spassky probably erred with 13.bxc5. This move seems to give Black a good c5-square and fails to stop Black's attack on the Kingside. 13.Nh4 was probably needed. Larsen played 13...Bxc5 and Spassky went for 14.Nd4? Again, 14.Nh4 was better, or 14.Bxc5. Now Larsen simply played 14...Bh3 and won the exchange:  click for larger viewThe rest is just a Black bulldozer destroying White's position. Surprisingly, in this position (after 28...Qh1+ 29.Kg3):  click for larger view...Larsen failed to play the absolutely crushing 29...Nh2+ and instead played 29...Nf6+, which is the least dangerous discovery check he can give, thus allowing Spassky to survive for ten more moves. 0-1 in 39 |
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Sep-16-10
 | | Fusilli: Buenos Aires (Clarin) 1979, round 8, Larsen vs M J Tempone, 1979 Position after 25.Nxa7:
 click for larger viewBlack can play 25...Ra5 or 25...Rd2 with equality. Instead he played 25...R8d6? 26.Nc8:  click for larger viewThe problem is not really the fork, but the loss of the pawn on e4. 26...Qf6 (saves the exchange because perpetual check would follow) 27.Qe8+ Bf8 28.Qxe4. 1-0 in 40. |
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Sep-16-10
 | | Fusilli: Buenos Aires (Clarin) 1979, round 9, Lombardy vs Larsen, 1979 Position after 29.Bxe1:
 click for larger viewPosition after 39.h4:
 click for larger viewThe White bishop is officially "bad".
Position after 49...a3:
 click for larger viewAnd Larsen tried and tried, but couldn't break White's defense. Final position, after 71...Kc6:
 click for larger view |
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Sep-16-10
 | | Fusilli: Buenos Aires (Clarin) 1979, round 10, Larsen vs Panno, 1979 Position after 30.Qe4:
 click for larger viewIt takes very good intuition and calculation to find the good defense here. With the help of Fritz, that would be 30...Kf8, or even 30...Ne7. Panno played 30...Ne5, and he is lost after that. See the game for the rest. It is instructive to see how the weakness of the white squares is lethal for Black even after there are just a few pieces left. 1-0 in 41. |
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Sep-16-10
 | | Fusilli: Buenos Aires (Clarin) 1979, round 11, Gheorghiu vs Larsen, 1979 They must have been terrified of Larsen by now. In this position (after 19...Rb8):  click for larger view... Gheorghiu, having plenty of choices, played 20.e4, which leads pretty much mathematically to this:  click for larger view(Above: position after 25.gxf3)
But he succeeded. He did get his draw in 40 moves. |
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Sep-16-10
 | | Fusilli: Buenos Aires (Clarin) 1979, round 12, Larsen vs Z Franco-Ocampos, 1979 Larsen played very aggressively and Franco truly horribly. White is winning after just 15 moves. Position after 15.h5:  click for larger viewEnormous White advantage.
Black even castled on the Kingside (all choices were bad) and was killed a few moves later. Final position, after 23.Qg3:  click for larger view |
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