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| Apr-25-10 | | Dome: 24.Bh3
24...Bg3 25.Rf8 - Rf8 26.Be6 - Kh8 27.Rf8
24...Be7 25.Rf7
24...Bc8 25.Qh4 |
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| Apr-25-10 | | abuzic: Correction abuzic: The line: 24.Bxg6 Bxg3 25.Bf7+ Kh8 26.Rf3! is even stronger than 26.Bxe8. |
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| Apr-25-10 | | daveinsatiable: <gofer> 25 Bh3 Qxh6 |
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| Apr-25-10 | | abuzic: 24...Qxh4 Qxh4 25.Bh3 Qxh6! and there is no immediate threat: i,e: 26.Ng4 (the only move that keeps white's superiority) Qh4 27.Nf6+ Kf7 28.Nxe8+ Qxf2! 29.Rxf2 Kxe8. 26.Bxe6+ Rxe6 27.Ng4 Qg7 28.Rf7 Nd7!
26.Rf7 Qxe3+ 27.Kh2 Bc8! 28.Ng4 Qg5 29.Nf6+ Kxf7 30.Ne4+ Qf5! |
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| Apr-25-10 | | johnlspouge: Sunday (Insane)
Carlos Torre vs Verlinsky, 1925 (24.?) White to play and win.
Material: Up a R. The Black Kg8 has 1 legal move, h8, which Ne5 and Bh6 can attack. The Black Bh4 attacks Qg3, so any viable candidate must rescue Qg3 or counter-attack Qd8 or (more likely) Kg8. White has a battery Rf1 and Rf2 x-raying Nf8 through Bf5. The White Bh6 also attacks Nf8, strongly suggesting a clearance of Bf5. Given that White has a local superiority around Kg8, a sacrifice at Pg6 therefore appears a likely candidate. The White Kg1 is secured from check. Candidates (24.): Bxg6, Qxh4, Bxe6+
I got as far as
24.Bxg6 Bxg3 25.Bf7+ Kh8 26.Bxe8 Bxf2+
but I did not see the finish. I went for 24.Bxe6+, which Toga evaluates at about +2.5 P. |
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| Apr-25-10 | | johnlspouge: < <Jamboree> wrote: [snip] I highly recommend that everyone do what I do with these daily puzzles: DON'T look at the difficulty rating ahead of time. It's too much of a big clue. > Unfortunately, the rating is tied inexorably to the day of the week. In fact, I have a template for the <CG> puzzle by the day of the week, including the difficulty. Thus, the only way to avoid knowing the difficulty is to make sure that you do not know the day of the week. My mother, aged 83, makes sure she knows the date and day of the week, in case a physician gives her a mental status exam. You might as well know the puzzle difficulty, too ;>) |
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| Apr-25-10 | | David2009: Sunday 25/04/2010 Insane Carlos Torre vs Verlinsky, 1925 White 24? White is ahead on material a R for a P with attacking chance, but is in danger of surrendering the exchange with check after which the Bf5 goes.
The pragmatic line is therefore 24. Bh3 expecting as main line 24...Bxg3 25 Rxf8+ Rxf8 26 Bxe6+ Kh8
27 Rxf8+ Qxf8 (not 27 Bxf8 Bxe5!) 28 Bxf8. The dust has cleared leaving White a piece up. There may be better for Black,
but that is not White's affair. We play 24 Bh3 and await Black's reply with interest.
Time to check:
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Torre chose Bxg6 instead. 
click for larger view
(Carlos Torre vs Verlinsky 1925, 24?) According to Crafty both lines win: Torre's is better. Link:
http://www.chessvideos.tv/endgame-t...
Crafty agrees with my suggested play for Black after 24 Bh3, and with Black's play in the Torre variation until Black resigned (Crafty is programmed to never resign). POSTSCRIPT after browsing other kibitzes:
<Apr-29-04 Dudley: Well crafty seems to have found a better way.
Apr-29-04 Dudley: So 24.Bxe6+ NxB 25.Qf3 BxR 26.Qf7+ and then? Is that the line you had in mind? I too thought that Bxe6 was the answer but I'm not sure now.
Apr-29-04 crafty: 24. Bg4 Bxg3 25. Rxf8+ Rxf8 26. Rxf8+ Qxf8 27. Bxe6+ (eval 7.42; depth 18 ply; 500M nodes) >
Is this the Crafty we know and love? (: |
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| Apr-25-10 | | David2009: <-25-10 gofer: Okay! Prove me wrong what did I miss? :-) [snip]Its a Sunday! But its a queen Sac Sunday! These must be wrong, because a Queen sac is not ever really a Sunday position! But what the heck...
24 Qxh4 ... The sac cannot be accepted. 24 ... Qxh4 25 Bh3 ... (threatening mate on f8 to which there is no good response)>
24 Qxh4 Qxh4 25 Bh3 Qxh6 0-1 (see Crafty link in my previous post Carlos Torre vs Verlinsky, 1925 ) |
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| Apr-25-10 | | Slotermeyer: Leibnoob, after a swap of Q vs R on f8, it is indeed a trivial win. If Black moves the h pawn, it will drop. If not, Bh6! traps the Black King in the corner, with the plan Kg1----f6, Bg7, and Ne5-g4-h6#. |
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| Apr-25-10 | | TheChessGuy: Torre had some real gems in the First Moscow International. This one and the deadly windmill against Lasker definitely come to mind. |
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| Apr-25-10 | | butilikefur: <24. Bg4 Nd7> 24...Bxg4 25. Rxf8+ Rxf8 26. Bxe6+ Rf7 (26...Kh8 27. Rxf8+ Qxf8 28. Bxf8) 27. Rxf7 Kh8 28. Bg7+ Kg8 29. Re7+ mate or else simply 28. Rf8+ mate; 24...Qe7 25. Rxf8+ Rxf8 26. Rxf8+ Qxf8 27. Bxe6+ Kh8 28. Qxh4; 24...Kh8 25. Nf7+ wins the queen because 25...Kg8 26. Nxd8 Bxg3 27. Rxf8+ Rxf8 28. Rxf8+ is mate; 24...g5 25. Rxf8+ Rxf8 26. Bxe6+ Kh8 27. Rxf8+ Qxf8 28. Qxh4 gxh4 29. Bxf8 <25. Qxh4> although 25. Nxd7 works following the same idea as above 25...Bxg3 26. Rf8+ Rxf8 27. Bxe6+ Kh8 28. Rxf8+ Qxf8 29. Nxf8 up a piece after 25. Qxh4 the black queen has to move along the 8th rank since QxQ is threatened and then 26. Nxd7 wins easily |
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| Apr-25-10 | | reti: I thought about Nxg6, but I cannot solve any complicated chess problem on my computer because my neck starts to hurt. |
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| Apr-25-10 | | DarthStapler: Bxe6+ Kh8 Qxh4 doesn't work? |
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| Apr-25-10 | | Eduardo Leon: White to play. 24.?
click for larger viewThe white light-squared bishop must give the last check in the a2-g8 diagonal. But, black is not forced to reply the immediate 24.♗xe6+ with 24...♖xe6. The first solution I could validate was <24.♗g4!> (or 24.♗h3!). Now, <24...♗xg3> allows the tactical blow <25.♖xf8+ ♖xf8 26.♖xf8+ ♕xf8 27.♗xe6+>, and white ends a piece up. 
click for larger viewAnd, if either <24...♗c8> or <24...♗e7>, white plays <25.♖f7!>, threatening 26.♖g7+ ♔h8 27.♘f7#, against which there is no defense. 
click for larger view---
I was going to post that solution, when I suddenly found <24.♗xg6!> was more forcing. Now, if <24...♗xg3>, white wins brilliantly with <25.♗f7+ ♔h8 26.♗xe8 ♗xf2+ 27.♖xf2>. 
click for larger viewWhite wins after either <27...♕xe8 28.♖xf8+ ♕xf8 29.♗xf8> or <27...♘g6 28.♘xg6+ hxg6 29.♗xg6>. On the other side, if <24...♘xg6>, then <25.♖f7!>, and the threat 26.♖g7+ ♔h8 27.♘f7# is again unstoppable. 
click for larger view |
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| Apr-25-10 | | Eduardo Leon: For space reasons I did not include the line <24.♗g4! ♘d7 25.♘xd7! ♗xg3 26.♖f7!> in my previous analysis. |
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| Apr-25-10 | | rapidcitychess: Why doesn't Bxe6 work? |
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| Apr-25-10 | | TheaN: 6/7
How weird. How so weird. Just minutes ago I miss the mate in 5 from yesterday, today I'm not even looking that well (~3 minutes compared to my usual 15 minutes for a Sunday) and I get this. Well, I got that Bxg6 was killing in case of Bxg3, and on Nxg6, Rf7 should finish up and wanted to watch the solution thinking I should probably miss something. And in fact, I got the key points :P. Well, too bad of yesterday, but fine week nonetheless. |
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| Apr-25-10 | | wals: Rybka 3 1-cpu: 3071mb hash: depth 15:
A lost game for Black was sealed with -
20...Nf8 +9.74 . Rf5 (+2.43) would have prolonged the agony. |
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| Apr-25-10 | | TheBish: Carlos Torre vs Verlinsky, 1925 White to play (24.?) "Insane"
White is temporarily up a rook (for a pawn), but he is facing a bishop skewer and his Bf5 is en prise, so it looks material will be even after 24. Bxe6+ Nxe6 25. Qg4 Bxf2+ 26. Rxf2, or even 24. Qg4 Bxf2+ 25. Rxf2 exf5 26. Rxf5. But with all the firepower near Black's king (notably the strong Bh6 and doubled rooks on the f-file), maybe White has something much stronger? 24. Bg4!! (Bh3!! also works)
Instead of the logical desperado 24. Bxe6+, this bishop is retained as an important weapon, while clearing the f-file for the powerful threat Rxf8+. 24...Bxg3
What else? Knowing what's coming, Black could try 24...Nd7, but White would stay way ahead after 25. Bxe6+! Rxe6 26. Qxh4!, with the idea of 26...Qxh4 27. Rf8+ Nxf8 28. Rxf8#. 25. Rxf8+ Rxf8 26. Bxe6+ Kh8
Or 26...Rf7 27. Rxf7! Bh2+ 28. Kh1 and Black is helpless against 29. Rf8#. 27. Rxf8+ Qxf8 28. Bxf8 and White wins with an extra piece. I can't wait to see how Torre arrived at this position! |
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| Apr-25-10 | | TheBish: Funny, but last night I considered 24. Bxg6, but didn't follow it up once I saw 24. Bg4!. My move leads to pretty much the same thing, but Torre's move is a little flashier, and gains an extra pawn. Interesting... I just put the position on Fritz, and instantly it came up with 24. Bxg6, then a couple of seconds later it said 24. Bh3!, then returned to 24. Bxg6! a little later. I guess a win's a win! Fritz gives 24. Bh3 a value of 3.82, and 24. Bxg6 a 5.54. Also, instead of 26. Bxe8 as in the game, Fritz prefers 26. Rf3!, but only a computer would reject a clear, simple win for a few more points in material! |
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| Apr-25-10 | | wdh13: most here are wrong. queen sac wins it |
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| Apr-25-10 | | tacticalmonster: 1) White was up a rook for a pawn
2) White queen was skewered and bishop were hanging
3) White had great pressure on the open f-file. The f8 and f7 squares were attacked three times. 4) White had great prssure on the half open g-file. G6 pawn was under attack. G7 square was also weak. 5) The bad bishop on b7 was totally out of play.
Candidate: Bxg6- opened up the f file and broke open the g-file 1 fxg6?? 2 Rxf8+ Rxf8 (2 Kh7 3 Rxe8  )3 Qxg6+ Kh8 4 Qg7# 1 Bxg3 2 Bf7+! Kh8 3 Bxe8 Bxf2+ 4 Rxf2 Qxe8 5 Rxf8+ Qxf8 6 Bxf8 Kg8 7 Bh6 1 Nxg6 2 Rf7! Qe7 (2 Bxg3?? 3 Rg7+ Kh8 4 Nf7#)3 Rxe7 Bxe7 4 Nxg6 |
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| Apr-25-10 | | butilikefur: <eduardo leon> after <24. Bg4 Nd7> I think <25. Qxh4> is better with <25...Qxh4 26. Bxe6+ Kh8 27. Nf7+ Kg8 28. Nd6+ Kh8 29. Nxe8 Qxh6 30. Bxd7 Qxe3> 30...Kg8 31. Be6+ Kh8 32. Rf8+ Qxf8 Rxf8+ <31. Kh2 Qh6+ 32. Kg3 Qg5+ 33. Bg4> winning more convincingly than 25. Nxd7 |
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| Apr-25-10 | | butilikefur: oh after 24. Bg4 Nd7 25. Qxh4 Qxh4 26. Bxe6+ Kh8 27. Nf7+ Kg8 28. Nd6+ Kh8 29. Nxe8 Qxh6 30. Bxd7 Qxe3 31. Kh2 Qh6+ best is 32. Bh3, which mates quickly. |
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| Apr-25-10 | | tacticalmonster: very easy for a Sunday puzzle. I usually take half an hour to find the solution but this time I took no more than 10 minutes |
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