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Sarhan Guliev vs Victor Bologan
Ostrava (1993), Ostrava CZE
King's Indian Defense: Fianchetto. Panno Variation (E63)  ·  0-1

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White to move.
ANALYSIS [x]
Notes by Stockfish 11 (minimum 6s/ply)better is 2.Nf3 e6 3.Nbd2 d5 4.b3 Bd6 5.e3 O-O 6.Bb2 Nbd7 = +0.30 (42 ply) 2...e6 3.Nf3 d5 4.Nc3 c6 5.e3 Nbd7 6.Qc2 Bd6 7.Bd3 = -0.27 (36 ply) ⩲ +0.58 (35 ply) after 3.f3 c5 4.d5 d6 5.e4 Bg7 6.Ne2 e6 7.Bg5 exd5 8.cxd5 better is 6...c6 7.Nc3 Bf5 8.Ng5 e5 9.dxe5 dxe5 10.e4 Bc8 = +0.03 (30 ply) ⩲ +0.53 (37 ply)better is 9.Bd2 e5 10.d5 Ne7 11.e4 b5 12.Qe2 Bd7 13.a4 b4 14.Nd1 ⩲ +0.55 (30 ply)= 0.00 (34 ply)better is 11...Bd7 12.d5 Na5 13.Ne1 e6 14.dxe6 Bxe6 15.Qd3 b4 = 0.00 (33 ply) ⩲ +0.53 (32 ply)better is 12...Bd7 13.Nd2 Na5 14.Qc2 Bh6 15.d5 c6 16.dxc6 Nxc6 = +0.14 (23 ply) 13.Nd2 Bd7 14.Qc2 Bb5 15.Rfe1 d5 16.e3 Ra8 17.Qc5 Qb8 ⩲ +0.89 (33 ply)= +0.11 (32 ply) 15.Nd2 Nb5 16.Qxc6 Qa7 17.e5 Bb7 18.Qc4 Bxg2 19.Kxg2 ⩲ +0.82 (30 ply)better is 15...Bh6 16.Nd2 Nb5 17.h3 Nd7 18.d5 Qa7 19.dxc6 Ne5 = 0.00 (35 ply) 16.h4 Bh6 17.Ra1 Nb5 18.Nh2 Na3 19.Qd3 Qb5 20.Qd1 Bd7 ⩲ +0.68 (30 ply) ⩱ -0.55 (33 ply) 18.Bf3 Bg4 19.Bg2 Bh3 = 0.00 (37 ply) ⩱ -1.15 (30 ply) 19...Bg4 20.Bxg4 fxg4 21.Re2 Bh6 22.Qe4 Bxd2 23.Rxd2 Rf7 ⩱ -1.00 (34 ply)= 0.00 (33 ply) after 20.Qd3 Kh8 21.Nc4 f4 22.exd6 exd6 23.Nxd6 g5 24.Ne4 Rbd8 better is 21.Rxc6 Ne3 22.fxe3 fxe3 23.Nf1 Rxf3 24.Qxf3 Rf8 = 0.00 (36 ply) ⩱ -0.55 (37 ply) 22...Rxf3 23.Nxf3 exd6 24.Re4 g5 25.Qe2 Qh5 26.Re1 Bd7 = -0.37 (37 ply) ⩲ +1.26 (38 ply) 24.Rxc3 bxc3 25.Nxc3 Nb5 26.Nxb5 Rxb5 27.Ba3 g5 28.Ne4 ⩲ +1.14 (37 ply) ⩱ -0.87 (36 ply) 25.Nd5 Nxd4 26.Bxd4 Bxd4 27.Ne4 Be5 28.Bg2 Bxg2 29.Kxg2 ⩱ -0.67 (34 ply) ∓ -1.86 (40 ply) 26.Bc1 Bxd4 27.Nf3 Rd2+ 28.Nxd4 Rxd1 29.Rxd1 Qh5 30.Nce2 ∓ -1.84 (34 ply)-+ -10.60 (32 ply)34.Rxf8 Kxf8 35.Nxb2 Qe5+ 36.Kf3 Qf6+ 37.Ke4 Qxb2 38.Nc4 -+ -14.06 (33 ply)0-1

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
FEN COPIED

Annotations by Stockfish (Computer).      [35437 more games annotated by Stockfish]

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Kibitzer's Corner
Nov-10-19  Delboy: I think there is a weekend puzzle in here somewhere, maybe after 23. Rxc6, which I suspect is an error (though black already looked better at that stage). At what stage did black need to see the winning sacrificial 25. ... Rxf2 and 27. ... Bg4+ ?
Nov-10-19  PhilFeeley: Definitely should be a game of the day someday. Quite the battle.
Nov-05-22
Premium Chessgames Member
  fredthebear: Rooks eating pie looks O.K. to me. Somewhere between the two gulps must be where the answer lies. Tip: Early in your move selection process, consider moving your en prise unit to do a job. Don't just retreat the en prise unit to safety, but see if it can be moved w/a purpose/threat.

For example, let's say you're in check. Consider moving your en prise unit to block the check a.k.a. interposition. You get out of check, and you reposition your en prise unit in the same move.

Feb-28-24
Premium Chessgames Member
  chrisowen: Wads of room
Feb-28-24  King.Arthur.Brazil: If B plays the simple: 25...bxc3 26. Bxc3 Rbc8 27. Bd5+ Kh8 28. Bb2 the game continues apparently tied, however W has 2♙+♘ against ♖, having more chances in the endgame. Therefore, B must be more active: 25...Rxf2

Refusing
a) 26. Nce4 Rg2+ (27. Kf1 Rf8+ 28. Nf3 Rxb2+...) 27. Kh1 Bg4+ 28. Kxg2 Qh3+ 29. Kg1 Bxd4+ 30. Nf2 Qxg3+ 31. Kh1 Qh4+ 32. Kg1 Qxf2+ 33. Kh1 Qh4+ 34. Kg2 Qh3# or 29. Kf2 Bxd4+ 30. Re3 Bxe3+ 31. Kxe3 Bxd1 32. Bd5+ Kf8... B has enough material to win.

b) other try: 26. Bd5+ Kh8 27. Ne2 Qe3 28. Kh1 Re8... and if W deffends the Ne2 pin with 29. Bc4 Bg2+ and win, or 29. Bf3? Rxf3 30. Nxf3 Qxf3+ 31. Kg1 mate next. Nor 28. Nf1? Rxf1+ 29. Kh2 Qf2+ 30. Kxh3 Rxe1...

Accepting
c)26. Kxf2
One possibility is 26... Rf8+ 27. Kg1? Bxd4+ 28. Kh2 Bg4+ 29. Kg2 Qh3#. however, with 27. Ke2 Bg4+ 28. Nf3 W escapes. For this reason, best is 26...Bxd4+ (27. Ke2? Qe3#) 27. Kf3 Bg4+ ( 28. Kxg4 Qh5+ 29. Kf4 Qf5#) 28. Ke4 Bxd1 29. Nxd1 Qxd2 and wins.

Feb-28-24  King.Arthur.Brazil: B cannot play 29...Qxd2? (my mistake), because of: 30. Bd5+ Kf8 31. Rf1+ Ke7 32. Bxd4 Qe2+ 33. Ne3 protects everything.

In the game line, after: 34. Rxf8 Kxf8 35. Nxb2 Qe5+ 36. Kd3 Qxb2. While 34. Rd1 Rf4+ 35. Kd3 Qf2 (threatening 36... Rd4#) 36. Be4 d5 37. Nxd5 Qd4+ 38. Kc2 Rf2+ 39. Nd2 Qxe4+.

Feb-28-24  mel gibson: I also chose the game ply 26. Kxf2

So did Stockfish 16 but the Rook is declined
and it's almost a draw:

25. .. Rxf2

(25. .. Rxf2 (1. ... Rxf2 2.Bc1 Bxd4 3.Nf3 Rd2+ 4.Nxd4 Rxd1 5.Rxd1 Qh5 6.Nce2 Rc8 7.Bf3 Bg4 8.Rf1 Bxf3 9.Rxf3 Re8 10.Kg2 Ra8 11.Rf2 Rxa2 12.Nf4 Rxf2+ 13.Kxf2 Qh2+ 14.Ng2 Qh1 ) +0.86/50 122)

score for Black +0.86 depth 50.

If I force SF to accept the Rook:

26. Kxf2 Bxd4+

(26. .. Bxd4+ (1. ... Bxd4+ 2.Kf3 Bg4+ 3.Ke4 Bxd1 4.Nxd1 Bxb2 5.Kd3 Qg7 6.Re4 Bc1 7.Nc4 Qa7 8.Re1 Kh8 9.Nc3 Bh6 10.Re8+ Rxe8 11.Bxe8 Qf2 12.Ne4 Qxa2 13.Nexd6 Qxb3+ 14.Ke4 Qxg3 15.Ba4 Kg8 16.Ne5 Qg2+ 17.Kd4 Qa2 18.Kc5 Bf8 19.Nf3) +6.67/39 230)

score for Black +6.67 depth 39.

Feb-28-24  jffun1958: Capturing the Bg4 is 2-mate:
27...Bg4+ 28. Kxg4 Qh5+ 29. Kf4 Qf5#
Feb-28-24  jffun1958: Better is 25.Nd5 Nxd4 26.Bxd4 Bxd4 27.Ne4 Be5 28.Bg2 Bxg2 29.Kxg2 (Stockfish Analysis)
Feb-29-24  King.Arthur.Brazil: <mel gibson> following SF line: <25...Rxf2 26. Kxf2 Bxd4+ 27. Kf3 Bg4+ 28. Ke4 Bxd1 29. Nxd1 Bxb2 30. Kd3 Qg7 31. Re4 Bc1 32. Nc4 Qa7 33. Re1 Kh8 34. Nc3 Bh6 35. Re8+ Rxe8 36. Bxe8> then why not bxc3 37. Kxc3 Qxa2 and B has a ♕ against a ♘?
Feb-29-24  EvanTheTerrible: Reminded me of Krasenkow - Nakamura (2007).
Feb-29-24  AlicesKnight: Found the right break-in with ...Rxf2 and following. The bishop crossfire is pleasing to see.

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