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William Doubleday vs Sergey Kudrin
Ontario Open 2004  ·  Gruenfeld Defense: Three Knights Variation. Hungarian Attack (D92)  ·  0-1


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+ sac: 25...Rxh2+ PGN: download | view Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing >
Dec-17-04   caballos2: Qa5+ picks up the knight.
Dec-17-04   IDieforFischer: I was thinking of
29.Kf3 Qe3+ 30.Kg4 Rh4 with mate followed by 31..... Rg5+ 32.Kh4 Qg3++

If white go for sac of rook at R*f7(looks like the only option to be in the game), then the game gets complicated a little and finish will be prolonged but still black would be able to checkmate soon according to me.

Can anybody please look at this line and analyze.

Dec-17-04   charms: I think you mean 30... Rh5...
a) 31.Rxf7+ Kh6! 32.Rh7+ Kxh7 33.Qb7+ Kh6 ;
b) 31.Rf4 Rg5+! 32.Kxg5 Qg3+ 33.Rg4 f6+ 34.exf6+ Bxf6++ ; [c) 31.(B,R)- f3 Qg5++]
d) all other moves fail to prevent 31...Rg5+ Kh4 32.Qg3++. Still, Qf5 is more accurate, and easier to calculate.
Dec-17-04   Marco65: I saw the line until 28...Qg5+, but then what if 29.Bg4 ?
Dec-17-04   de schaar: Bxe5+?
Dec-17-04   quXa: eurhm...

29... Qe3+
30. Bf3
( Cause when he does 30. Rf3 Bxe5# )
30... Bxe5+
31. Kg4 Qf4#

Dec-17-04   quXa: The eurhm... was because i was thinking :P
Dec-17-04   mahmoudkubba: By white moving in move 30 to Kg3 then it is never mate for him????
Dec-17-04
Premium Chessgames Member
  cu8sfan: <mahmoudkubba> 30.Kg3 Bxe5+ 31.Rf4 Qxf4#.
Dec-17-04   secrtagent: I think black lost the plot in the middle game should have exchanged queens.
Dec-17-04
Premium Chessgames Member
  patzer2: Today's puzzle solution begins with the thematic "demolition of pawn structure" move 25...Rxh2+!! As with most of the demolition combinations, this one involves a few supporting themes, including deflection, pursuit (i.e. king hunt in the center), a key waiting move (i.e. 27...Qe7! which also serves as a deflection), and a distant Queen Check (i.e. 28...Qg5+!) with several interesting mate possibilities.

A detailed analysis follows:

25...Rxh2+!! 26. Kxh2 Rh8+ 27. Kg3 Qe7! 28. fxe5 (forced due to the threat of 28...Qh4#) 28...Qg5+!

[the alternative 28...Qh4+?! leads only to a draw by perpetual after 28...Qh4+?! 29. Kf3 Qh5+ 30. Ke4 (30. g4?? Qh3+ 31. Kf4 Qe3#) 30...Qxe5+ 31. Kd3 Rd8! (White wins after other moves) 32. Re2! (Black wins after other moves) 32...Be3+! 33. Kc2 Qa1 34. Rxe3 Qxa2+ 35. Kc1 (35. Kc3 Qd2+ 36. Kc4 Qb4#) 35...Qa1+ 36. Kc2 Qa2+ 37. Kc1 Qa1+ = ]

25...Rxh2+!! 26. Kxh2 Rh8+ 27. Kg3 Qe7! 28. fxe5 Qg5+! 29. Kf3

[29. Bg4 Qe3+ 30. Bf3 (30. Rf3 Bxe5#) 30...Bxe5+ 31. Kg4 f5# (31...Qf4#)]

25...Rxh2+!! 26. Kxh2 Rh8+ 27. Kg3 Qe7! 28. fxe5 Qg5+! 29. Kf3 Qf5+! 30. Ke2 [30. Kg3 Bxe5+ 31. Rf4 Qxf4#] 30...Qe4+ 31. Kd2 Qe3#

Dec-17-04
Premium Chessgames Member
  kevin86: I answered this one-right down to the mating net!! I guess this week's theme was threats/attacks along the h-file. It started with a few Anastasia's mates and has evolved into a strategy of ousting the king from the h-file and then chasing him to his doom.
Dec-17-04   notsodeepthought: <peterk007> Nope, I wasn't, which is why I obviously cannot claim to have solved the puzzle. In a real game, I doubt I would even get to the puzzle's initial position, let alone find the right continuation - so I guess I'll have to stick to my day job.
Dec-17-04   klausewitz: I also saw till Qg5+...
Dec-17-04   Iron Dragon: I saw till 27. Kg3, then wasn't sure what black should do. But that is good enough for me, I'm counting it.
Dec-17-04   maxundmoritz: 27... Qd8 is even quicker than 27... Qe7, because it allows to play 29... Rg5+ and the Queen can go to h8, if the King tries to escape to h2 or h3:

27... Qd8 28. Bh5 Rxh5 29. Rh1 Rg5+ 30. fxg5 Qxg5+ 31. Kh3 Qg4+ 32. Kh2 Qh4#

Dec-17-04   Marco65: <quXa> Thanks for the 29.Bg4 line
Dec-17-04   ruylopez900: I guessed the rook and knight sacs (rook to get king out in the open, knight because its not helping that much, but I didn't see all the way to the end.
Dec-17-04   mdorothy: Well, I just went on a fun, but wrong trip through this. I'll tell it for no particular reason. I intuitively saw Rxh2+ (I see many of the first moves in these puzzles intuitively), and like I do many times, I just barely analyzed the followup, because I don't usually spend a lot of time on these problems. I wanted to sac the knight immediately with 26...Nf3+ planning to block the rook's protection of f4 with the white bishop or pawn and invade on f4 with my queen. Not even thinking, I proceeded to the answer. Well, upon seeing his next move, I got giddy to cook the puzzle. Immediately after looking at my sacrifice a second time, I thought, 'DUH! The rook can straight up take just as easy, and that puts it on the 3rd rank, too.' But, I took another moral turn upward, thinking I could do it anyways. My mind searched 27.Rxf3 Rh8+ 28.Rh3 Qf4+ 29.g3 Rxh3+ 30.Kxh3 and aha! Qf1, black would be on his way to a victory. I was overflowing with joy... Until I realized how dumb I was because the queen protected f1. That was my two minute rollercoaster ride for the day. I tried to cook it, but you can stick a fork in me, I'm done.
Dec-17-04   be3292: Thanx <caballos2> -- it's easy to see why I'm not a competitor.
Dec-17-04   spassky27: why not 14 knight x c7?
Dec-17-04   nosh: So here's the question... Does Kudrin see all the variations to the mate or does he just assume that the king in the middle hunted by the queen, bishop, and rook must go down? I saw up to 28 ... Qg5 and assumed the king would fall shortly (correctly getting the rest of the moves of the actual game as I played through it), but I didn't calculate the 29 Bg4 variation.
Dec-18-04
Premium Chessgames Member
  tpstar: <spassky27> Like <caballos2> said, 14. Nxc7?? Qa5+ & 15 ... Qxc7 wins a piece. Be on the lookout for such tricks whenever the King hasn't castled yet.
Oct-18-05   chessboyhaha: well well this game it's one of the most beautiful games with sacrifaces on Grunfeld. Wow Rxh2, Doubleday not even saw what happened. Too pretty.
Oct-18-05   chessboyhaha: This game deserve to be on the game of the day.
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