Tigran Petrosian vs Svetozar Gligoric (1953)

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Tigran Petrosian vs Svetozar Gligoric
Zuerich Candidates (1953), Zurich SUI, rd 19, Oct-04
King's Indian Defense: Saemisch. Closed Variation (E87) · 1-0

ANALYSIS [x]

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Sep-06-06		nescio: I don't remember if it was Vukovic or Petrosian himself who pointed out the unexpected sacrifice 37...Rxe4! After 38.fxe4 Nxe4 39.Qe1 Qxd5 White's king is in considerable trouble. I seem to have lost or mislaid Bronstein's tournament book, but he gave several variations to prove it. Perhaps someone can post them here. I will only say that 40.a3 Nd2+ 41.Ka1 Nb3+ 42.Kb1 Nd2+ gives Black a perpetual and he could perhaps try for more with 42...Nxc1 or 42...Qd2. Of course Gligoric will have been in time trouble, so he missed the sacrifice or rejected it because he had no time to calculate.

Nov-12-06		mack: What's wrong with 19.Bxa6?

Oct-20-07		Gameoverziggy: Why give away one of your bishops for a knight on the rim especially when the black bishop on a6 becomes very powerful

Mar-29-08		NM James Schuyler: There's a little more to it than that. 19. Bxa6 allows white to play 20.Nf5, which was presumably his plan with 18.Ng3. In fact, Petrosian may well have intended 19.Bxa6 when he played it (otherwise Ng3 has no point). If so, I can't figure out why he changed his mind.

Dec-14-08		Poisonpawns: It was Bronstein who pointed out the rook sacrifice 37..rxe4

May-27-17		cwcarlson: 18.♘d4! ed 19.♗d4 h6 20.♕f4 ♗g5 21.♕g3 ; 19...♘h5 20.♕g2+ ♕g5 (20...♔f2 21.♕g4 ) 21.♕g5+ ♗g5 22.♖g1 .

May-31-17		plang: Earlier in the tournament in a draw against Geller Gligoric had introduced the idea of attempting to exchange his "bad" bishop with 11..Bf6. Against Geller Gligoric had played 12..Nd7; here he tried 12..g5 making no attempt to hold up White's queenside attack. This is not an improvement and has not been repeated. 15..Na6?! misplaced the knight; an alternative was 15..Kh8 with the idea of using the open g-file. 16..bxc 17 dxc..Qe8 18 Nc1..Qxc6? 19 Bb5..Qb7 20 Bxa6..Qxa6 21 Qd5+ would have been winning for White. <mack: What's wrong with 19.Bxa6?> According to Wood White had originally intended 19 Bxa6..Bxa6 20 Nf5 but then realized that 20..Ne8 would have been a satisfactory response. 19..Nc5?! allowed a weakening of Black's queenside; perhaps 19..Nd7 would have been better. 26 Qxc7..Rfc8 27 Qa5..Bf2 would have given Black a dangerous initiative. <nescio: I don't remember if it was Vukovic or Petrosian himself who pointed out the unexpected sacrifice 37...Rxe4! After 38.fxe4 Nxe4 39.Qe1 Qxd5 White's king is in considerable trouble. .... I will only say that 40.a3 Nd2+ 41.Ka1 Nb3+ 42.Kb1 Nd2+ gives Black a perpetual and he could perhaps try for more with 42...Nxc1 or 42...Qd2.> No reason for Black to take the perpetual. After 42..Nxc1 43 Nxc1 (43 Qxc1..Qb3 44 Qd2..Rd5 45 Qc1..Qxc2+ 46 Qxc2..Rd1+) 43..Rc5 44 Bd3..Bxd3 45 Nxd3..Qxd3 46 Qe2..Qxe2 47 Rxe2..Kg7 48 b4..Rd5 Black is clearly better. Another nice variation is 37..Rxe4 38 fxe..Nxe4 39 Qe1..Qxd5 40 b3..Nd2+ 41 Kh1..Nxb3+ 42 Kb2..Rxa2+ 43 Kxa2..Nxc1+ 44 Kh1..Qa8+ 45 Kb1..Qa2+ 46 Kxc1..Qxc2#.

Dec-15-19		okiesooner: After 37...Rxe4, can White decline the immediate acceptance of the Rook sacrifice? How about 38. h5 as an alternative to 38. fxe4? For example 38...Rxe2 39. Qxe2 Bxc2+ 40. Qxc2 and White still has a Pawn advantage. Or 38...Bf5 39. Bh3 Bxh3 40. fxe4 Nxe4 41. Qe1 Qxd5 42. b3.

Dec-16-19		Carrots and Pizza: At the end of the game, Black's rooks are all tangled up and his king is left defenseless against White's queen, bishop and rook which could swing over to the g file.

Dec-16-19		keypusher: Couple of SF notes: As anticipated by <cwcarlson>, because 16....Nf6 cuts off the bishop's retreat, Nxf4 is winning, indeed crushing, on move 17 or 18. His 18.Nd4 is also crushing, since the knight can't be taken (as he showed) and can't be kept out of f5 or e6 if it isn't taken. And as pointed out by <okiesooner>, 38.h5 is the best response to the rook offer. It seems to lead to a somewhat worse position for White after (38....Bf5 39.Bh3 Rea4! 40.Nc3 Bxh3 41.Nxa4 Rxa4, which is far better than he does after 38.fxe4 Nxe4 39.Qe1 Qxd5.

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