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Andrei Istratescu vs Nadar Anand
25th Abu Dhabi International Chess Fest (2018), Abu Dhabi UAE, rd 3, Aug-09
Italian Game: Classical Variation. Giuoco Pianissimo (C53)  ·  0-1



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sac: 25...Rxf2+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Premium Chessgames Member
  drollere: i had 23. .. Qe1+, 24. Rxe1 Rxe1+, 25. Qf1 Rxf1+, 26. Kxf1 gxh3 and figured the fork at Ne6 would not stop the pawn after Bxd3+.
Jul-30-20  Walter Glattke: B guards h2, so Q+ RxQ RxR+ Qf1 Bh2+ Kxh2 RxQ I thought, putting the chessboard I had 25.Kg2! Rxf1 26.Kxf1 but then Bd3+ 27.Ke1 Bxc4 wins (B for P). In the match they played 24.Qf1 Bh2+ 25.Kg2 Rxf2+ rather deadly 26.Qxf2 gxh3+ (27.was Kxh3 Qxf2 mating or Kxg3 Qxf2+ mating)
Jul-30-20  Walter Glattke: 27.Kf3 Bh5#
Jul-30-20  Walter Glattke: Wrong putted at the board, after 25.Kg2! in my example one must play Be4+ 26.Kxh2 Rxf1 27.Be3 RxR or 26.Nf3+ Bxf3 27.Kh2 Rxf1 with one rook ahead
Premium Chessgames Member
  agb2002: Black has the bishop pair for a bishop, a knight and a pawn.

Black has gxh3, g3 and Qe1+.

The most promising option seems to be 23... Qe1+:

A) 24.Rxe1 Rxe1+ 25.Qf1 Bh2+ 26.Kxh2 (26.Kg2 gxh3+) 26... Rxf1 27.hxg4 R8xf2+ 28.Kg3 Bxd3 wins an exchange.

B) 24.Qf1 Bh2+

B.1) 25.Kg2 Rxf2+ 26.Qxf2 gxh3+ wins decisive material.

B.2) 25.Kh1 Qxf2

B.2.a) 26.Qxf2 Rxf2 27.hxg4 Bxd3, with the threat Be4+ and mate next, looks winning (28.Rxd3 Re1#).

B.2.b) 26.Qg2 Re1+ 27.Rxe1+ Qxe1+ 28.Kxh2 g3+ 29.Qxg3 Rf2+ wins decisive material.

Jul-30-20  saturn2: I went with
23...Qe1+ 24. Rxe1 Rxe1+ 25. Qf1 Bh2+ 26. Kg2 gx- h3+ 27. Kxh3 Rxf1 28. Kxh2 R8xf2+ 29. Kg3
Jul-30-20  Brenin: Fairly easy for a Thursday. White needed to play 25 Kh1, after which Black's best line seems be 25 ... Qxf2 26 Qxf2 Rxf2, with material equality but a massive positional advantage to Black, e.g. 27 hxg4 Bxd3 and 28 ... Be4+. White's earlier mistakes were 11 Nxe5, opening up the centre prematurely, and 20 Qxd5+, putting the N on b5 en prise after 20 ... Kh8 21 Qg2 Qe5, so that White has to lose a tempo moving or defending it.
Jul-30-20  Whitehat1963: Missed it by light-years!
Jul-30-20  TheaN: Ah darn. I thought Bh2+ wouldn't work in the Qf1 line but of course the fork on f2 makes the bishop immune. Typical, as I did see <23....Qe1+> 24.Rxe1? (too simple a defense) Rxe1+ 25.Qf1 Bh2+ 26.Kxh2 (Kg2 gxh3+) Rxf1 -+.

After <24.Qf1> I pictured <24....Qxf1+?! 25.Rxf1 (Kxf1 gxh3 -+ as the h-pawn is nigh unstoppable) gxh3 26.Bd2 Bxd3 ∓<>> mind that on move 26 White has no practical way to stop Bxd3 and Black's a whole lot better, but the h-pawn isn't there yet and it's otherwise just a pawn. 24....Bh2+ is the better alternative here.

Jul-30-20  TheaN:

click for larger view

Mind that the only salvage White has here is because of back rank threats, else this would practically have been better than 24....Bh2+. After 27.Rfe1! Be4 (h2+? 28.Kg2 ∓ defends f3 and allows the rooks to defend h1) 28.f3 and Black cannot play Bxf3?! (29.Rxe8 Rxe8 30.Nxf3 ⩲) or Rxf3? (29.Nxf3 +-), so has to resort to Bd5 29.Rxe8 Rxe8 30.Kf2 h2 ∓: Ph2 remains an inevitable thorn in the side for White which will eventually win Black the game, but the endgame is definitely on.

Jul-30-20  mel gibson: That was tricky.
I saw the first move but I wasn't sure if it was winning.

Stockfish 11 says:

23... Qe1+

(23. .. Qe1+ (♕e5-e1+
♖d1xe1 ♖e8xe1+ ♕g2-f1 ♗c7-h2+ ♔g1xh2 ♖e1xf1 h3xg4 ♖f8xf2+ ♔h2-g3 ♖f2-f8 b2-b4 ♖f1-d1 ♘d4-c2 ♖d1-g1+ ♔g3-h2 ♖f8-f1 ♗c1-e3 ♖f1xa1 ♘c2xa1 ♖g1xa1 d3-d4 ♖a1xa2+ ♔h2-g1 ♖a2-c2 d4-d5 ♖c2xc3 ♗e3xa7 ♖c3-d3 ♔g1-f2 ♖d3xd5 ♗a7-e3 ♗g6-e8 g4-g5 ♖d5-d3 ♔f2-e2 ♖d3-b3 ♗e3-c5 ♗e8-g6 ♔e2-f2 ♗g6-e4 ♗c5-d6 ♖b3-d3 ♗d6-c5 ♔h8-g8 ♗c5-e3 ♖d3-b3 ♗e3-c5 ♖b3-c3 ♗c5-e7 ♖c3-f3+ ♔f2-e2 ♖f3-d3 ♗e7-c5 ♖d3-g3 ♗c5-e7 ♔g8-f7 ♗e7-c5 ♖g3xg5 ♔e2-e3) +8.58/43 441)

score for Black +8.58 depth 43

Jul-30-20  King.Arthur.Brazil: Again I find the best solution by 24...♕e1+ 25. ♖xe1 ♖xe1+ 26. ♕f1 ♗h2+ 27. ♔g2 gxh3+ 28. ♔xh2 ♖xf1 29. f3 ♗f5, by which White lose the quality and a ♙, but still survive. In the game line, I proposed {27. Kxh2 Qxf2+ 28. Kxh3 Re2 (obviously not 29. ♘xe2 ♗f5#.) Then, some answers: A) 29. ♗g5 ♕h2+ 30. ♔g4 ♖g2+ 31. ♔f3 ♕g3#, B) 29. ♖g1 ♕h2+ 30. ♔g4 ♗h5+ 31. ♔g5 ♖e5+ 32. ♘f5 h6# or 31. ♔f5 ♖e5# dirctly. C) 29. ♗f4 (Not ♕xf4 30. ♘xe2...) but 29...♗f5+ 30. ♘xf5 ♕xf4 31. ♘g3 ♖e3 32. ♖g1 h5 33. (Not {33. Raf1 Rxg3+ win the ♘) 33. ♖ae1 ♖xd3 34. ♖e8+ ♔h7 35. ♖e2?! ♕g4+ 36. ♔h2 h4! ( If 37. ♘... move ♖h3#) then 37. ♖eg2 hxg3+ 38. ♔h1 ♕h3+} or 38. ♖xg3 ♕h4+ 39. ♔g2 (Not 39. ♖h3 ♕xh3#) ♕xg3+ 40. ♔f1 ♕f3+ 41. ♔e1 ♖d1# or 40, ♔h1 ♕h3#). Therefore, Black gives check-mate next, in the game line.
Premium Chessgames Member
  Everett: Ended up looking a bit like a Marshall Attack out of the Ruy
Premium Chessgames Member
  Breunor: I thought it was pretty easy for a Thursday.

Quite an upset!

Jul-31-20  sophiephilo: I figured out a Thursday puzzle! woohoo :)

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