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Viktor Korchnoi vs Andrejs Petersons
USSR Championship 1964/65 (1965)  ·  Queen's Gambit Accepted: Janowski-Larsen Variation (D25)  ·  1-0
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find similar games 1 more Korchnoi/A Petersons game
sac: 28.Bxh6 PGN: download | view Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 4 ·  Later Kibitzing>
May-16-07  iccsumant: They should have kept this puzzle for the Saturdays but right away from move 28.
May-16-07  openingspecialist: This puzzle i felt was an easy wednesday but we have had reasonably hard mon and tues puzzles so it balances. The puzzle needed to start a move earlier to really distinguish the best problem solvers but its a wed so well leave that for sat and sun :) ps this took me as long as it would have in a OTB situation - about 2min
May-16-07  openingspecialist: <Gilmoy was it a sound sack> yes it wins a queen or mates, c4 was the next move if the best move-Rec8 was played> try keep your queen without getting mated or losing even more material. This would make an ideal saturday puzzle but Kh7 - still winning - needs to be calculated. By the way the threat is Qh4 mating in 3 assuming black plays inaccurately but Qf5 is the best move and Rf3.
May-16-07  Tactic101: After struggling with the earlier puzzles, this one was a snap. Nice ending with the rook and knight coordinating beautifully.
May-16-07  goodevans: I agree with all the others who reckon this was easier than yesterday. Quite a disappointment.
May-16-07  goodevans: <MostlyAverageJoe: Even starting the puzzle one move earlier, <31.?>, would not get it above the Tuesday level> True, but it would least have been some improvement on what we were given!
May-16-07  uuft: Too easy in comparison to yesterday's. Anyone know where I can find the solution to yesterday's puzzle? Still dunno what I missed.
May-16-07  psmith: Actually, I think starting the puzzle one move earlier <31.?> would have made it easier.
May-16-07  AlfieNoakes: Urrrgh, I didn't get that! When I looked, it was so simple......
May-16-07  erasmusdurer: Another Monday puzzle--on Wed!
May-16-07  PAWNTOEFOUR: well after looking @ nf6+ for a few minutes, i decided on the queen sac,and to my surprise it worked out...but today's not monday,is it?
May-16-07  PAWNTOEFOUR: oh,forget yesterday's puzzle .........i looked at it twice and then went and did something else
May-16-07  LIFE Master AJ: According to a Chess Monthly for that year, Black Resigned after White's 32nd move. (Is there any way to verify the game score?)
May-16-07
Premium Chessgames Member
  Jack Kerouac: Don't usually check in on these puzzles,but this one knight-jumped out at me. Gotta hop a freight to San Jose on the Zephyr.
May-16-07  zb2cr: I noticed right away that Nf6 would fork the Black Queen, but was defended by the Black B on e7. After spending about a minute looking for ways to decoy the Bishop, I saw 32. Qxe7+, forcing 32. ... Kxe7. The Rook check was obvious to drive the King back--and then I noted that 34. Nf6 mated (a bonus)!
May-16-07  thedoyle: i got it woohoo!
May-16-07  D4n: Sacrifice the Queen, move Rook to the 7th rank...Knight makes it checkmate.
May-16-07  TrueBlue: man, that was easy!
May-16-07
Premium Chessgames Member
  MostlyAverageJoe: <uuft: Too easy in comparison to yesterday's. Anyone know where I can find the solution to yesterday's puzzle?>

Yeah, look in my forum for the comment dated May-15-07. It shows the real solution with the best defense from the black (which is NOT what was played in the game) and the second best solution that many people (myself included) opted for, after failing to see the best first move.

Once you know the correct solution lines, review the comments on the game and you'll be able to get deeper into the variations (most of them arising in the line after the black's bad, but quite natural response).

May-16-07
Premium Chessgames Member
  YouRang: It took me a few minutes. I saw that wonderful K+Q knight fork that was being stopped by only the bishop, but it took me a while to notice that after trading my queen for that bishop, I can use the rook to force the king back into it's forkable spot -- this time without the bishop to prevent it.

Funny thing is, I thought the combination ended up winning a piece. I didn't notice that it was mate, lol.

"Check. ...ahh... MATE!"

May-16-07  realbrob: Nice queen sac followed by forced mate in 2... I think this could've been a Monday puzzle as well.
May-16-07
Premium Chessgames Member
  kevin86: I solved this like many of the other patrons did. I saw that a sacrificial combo to mate didn't seem to have enough force to complete. Then I looked for the possibilities of forking king and queen by removing the bishop and chasing the king to a forkable square-the obvious being e8. Then I saw that the white knight kept the king from the third rank.

The final observation was the startling fact that the knight check would be a mate.

So the puzzle has this ironic twist:look for a mating combination and fail. Then look for a forking combination and find the mate!

The mate itself is different! It is not a smothered mate as there are too many open squares-and it's not an epaulette mate because a knight is checkmating. So it needs a different name. Any takers?

May-16-07
Premium Chessgames Member
  dnash007: If the rook would have move a litte further like C8, black survives...
May-16-07  nimzo knight: Nice. Easier than tuesday, strange to see black kept playing after the queen sac
May-16-07
Premium Chessgames Member
  kevin86: <nimzoknight> In the alternate score,black does resign after the queen move.
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