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Stanislav G Kriventsov vs Alexander Stripunsky
Chessmaster US Championships 2005 (2004)  ·  Sicilian Defense: Kan. Polugaevsky Variation (B42)  ·  0-1
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sac: 28...Rd3 PGN: download | view Help: general | java-troubleshooting

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Kibitzer's Corner
Jan-22-05
Premium Chessgames Member
  notsodeepthought: Cute, though I'm not sure 29 R:d3 was required. Could 29 Re2 hold? e.g., 29 ... Nd6 30 Nc5. In other variations after 29 Re2, the move Nc5 should still be available (attacking the bishop, so black has to exchange in e4 or lose a tempo), so I'm not sure white should have lost here.
Jan-22-05  hkannan2000: If 29 Re2, Bd5 and Bc4 generate unpleasant discovered threats on the white rooks.
Jan-22-05
Premium Chessgames Member
  Gypsy: < hkannan2000: If 29 Re2, Bd5 and Bc4 generate unpleasant discovered threats on the white rooks. > Your plan after 30.Nbc5 is ...
Jan-22-05
Premium Chessgames Member
  notsodeepthought: I would argue that after 29... Bd5 30 Nbc5, it's black who has to worry about white's unpleasant attack on his rook... also, white can follow with 31 Rfe1. But I'll leave this one up to <Crafty>, as soon as "he" is awake.
Jan-22-05
Premium Chessgames Member
  notsodeepthought: <Gypsy> You scooped me... :)
Jan-22-05  Shah Mat: i think this is the first friday puzzle i got in under 30 seconds.

ahh who am i trying to fool its the first friday puzzle i got (the part about under 30 sec was true though)

Jan-22-05  thorndeux: hmm - i don't seem to understand this. what about Rfe1? or the other rook, even? and Nc5 is just one move away. e.g. 29.Rfe1 RxR 30.RxR Rd3 31.Re1 Nd6 32.Nc5 and white seems to be fine, maybe loses the b-pawn. what am i missing?
Jan-22-05  ArmyBuddy: 27 Qe3. White would've won or drawn the game if it weren't for that move
Jan-22-05
Premium Chessgames Member
  patzer2: Black's 28...Rd3! combines the deflection and pin tactic for decisive effect. A detailed analysis follows:

28...Rd3! 29. Rfe1

[(A) 29. Re2 Nd6 30. Nbc5 Bxe4+ 31. Nxe4 Nxe4 32. Rxe4 Rd2 33. b4 Rc2 34. Re3 Rdd2 35. Rh3 h6 36. Ra1 Kf7 37. Re1 Ke7 38. Kg1 Kd6 39. Rg3 Kd5 40. Rh3 Kc4 41. Re4+ Kb3 42. Kf1 Rd1+ 43. Re1 Rxe1+ 44. Kxe1 Rxc3 45. Rh4 Rc4 46. Rh3+ Kxb4 ;

(B) 29. Rxd3 Bxe4+ 30. Kg1 (30. Rdf3 Rd1! 31. Kg2 Rxf1 32. Kxf1 Bxf3 33. Nc5 Bxg4 is the winning game continuation) 30...Bxd3 31. Rd1 Rd5 (an easier win is 31...e4 ) 32. Nc5 Rxc5 33. Rxd3 Ne7 34. Kf2 Nc6 35. Kf3 Kf8 36. Ke2 b4 37. cxb4 Rc2+ 38. Rd2 Rxd2+ 39. Kxd2 Nxb4 ;

(C) 29. Nbc5 Rxe3 30. Nxb7 Rd5 31. Ng3 Nd6 ]

28...Rd3! 29. Rfe1 Rxe3 30. Rxe3 Rd1+! [also winning are 30...Nd6! and 30...Rd3! ] 31. Kg2 Nd6 32. Nbc5 Bxe4+ 33. Nxe4 Nxe4 34. Rxe4 Rd2+ 35. Kf3 Rxb2 36. c4 Rb3+ 37. Ke2 Rb4 38. Kd3 Rxc4 39. Rxc4 bxc4+ 40. Kxc4 g6

Jan-22-05
Premium Chessgames Member
  patzer2: <Thorndeux> <What am I missing?> In your line, after <29.Rfe1 RxR 30.RxR Rd3 31.Re1 Nd6 32.Nbc5>, play continues 32...Bxe4+ 33. Nxe5 Nxe5 34. Rxe5 Rd1+ 35. Kg2 Rd2+ 36. Kf3 Rxb2, where Black with two extra pawns and two isolated weak Black pawns available as targets will easily win. Note also that Black here can play the intermediate move 30...Rd1+, gaining tempo for the winning line given in my post above.
Jan-22-05
Premium Chessgames Member
  kevin86: Nice combination by black!! His slight-of-hand gains him a piece-and the peace that winning offers.
Jan-22-05
Premium Chessgames Member
  Gypsy: <  notsodeepthought: <Gypsy> You scooped me... :) > Worry not; such parallel postings are just part of the great banter around here...
Jan-22-05
Premium Chessgames Member
  white pawn: Yay I got this one today :-D. I didn't see the entire way through, but I saw the gain in material. Very good game. And <Shah Mat> don't tell me it's Friday, when it's really Saturday, ever again. When I read your post I was like, "Oh no! I'm supposed to be at work!"(I jus woke up) :-p
Jan-22-05  Shah Mat: <white pawn> hahah sorry to put a scare into you.

the chessgames server is somewhere east of me, so in my timezone the new puzzles are up late friday nights; when i posted, the clock on my computer said it was friday...i forgot that it actually the saturday puzzle.

Jan-22-05  GreenDayGuy: What about 29. Rfe1? It holds the rook and protects the knight, and after black moves, white can move his king out of the pin.
Jan-22-05  Hossam Hassan: GreenDayGuy: after 29.Rfe1 there is 29...Rxe3 30.Rxe3 Nd6 31.Nbc5 Bxe4+ 32.Nxe4 Nxe4 33.Rxe4 Rd1+ 34.Kg2 Rd2+ 35.Kf3 Rxb2
Jan-28-05  hkannan2000: <Gypsy> After 30 Nbc5, ...Rh3! with same threates. White's Kt is pinned, the R at e2 will have to move to e1 when the other Black rook can (even though after preparation) intrude into whites 2nd rank. May not be fool proof. But i think Black is better.
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