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Mishra Swayams vs Levan Pantsulaia
7th Mumbai Mayor's Cup International Op (2014), THAKUR COLLEGE, KANDIVALI (EA, rd 8, Jun-07
Benoni Defense: Modern Variation (A56)  ·  0-1



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Kibitzer's Corner
Premium Chessgames Member
  sjunto: I got 29. ... Bxh3 Nf3; 30. Kxh3 exposes the king too much. Does that count?
Premium Chessgames Member
  Penguincw: I got 29...Bxh3 30.gxh3 Nf3+ as well. :p

In the final position, if white plays Qc7/Qf6/Qe7/Qf8, and black plays 50...c1=Q, can black escape the checks?

Premium Chessgames Member
  sjunto: <Penguincw in the final position, if white plays Qc7/Qf6/Qe7/Qf8, and black plays 50...c1=Q, can black escape the checks?> I assume you meant Qe8, not Qf8. After Qx c1=Q, 51.Qf7+ leads to a perpetual check. so don't promote immediately. Qd1+ or Qd5+, as appropriate, fixes this.
Premium Chessgames Member
  sjunto: Are we the only ones home on Friday night?
Premium Chessgames Member
  An Englishman: Good Evening: Can't claim full credit; didn't see White's 31.Qe1 which means I didn't see how Black forks King and Rook. Quite a remarkable game--12...Ne5 looks like an amateur blunder but the speculative sacrifice does seem hard to refute OTB.
Oct-24-15  diagonalley: 'strewth! ... what an astonishing sequence... only got the first move :-(
Oct-24-15  morfishine: I got <29...Bxh3> but was unable to discern the entire 21-move solution lol
Oct-24-15  Lambda: Saw up to h4, but then Qf2 or Qe1 seemed pretty good defences, I didn't notice the queen forking possibilities.
Oct-24-15  jith1207: Lol at least today, I have an elite company of chessgames puzzle solvers along with me in marveling at those amazing sequences of forks, even as I had no clue how to proceed further after an early speculative move..
Premium Chessgames Member
  agb2002: Black has a knight and a pawn for a rook.

The first idea that comes to mind is 29... Bxh3, trying to expose the whit king and to take advantage of several forks, 30.Kxh3 (30.gxh3 Nf3+ wins decisive material; else loses another pawn and the one that prevents Ng4) 30... h4. Now, 31.Qf2 loses the rook to Qg4+ and 31.Qe1 allows Nxd3 with the same idea.

Unfortunately, I don't have time for this puzzle today.

Premium Chessgames Member
  patzer2: Here's my look at the game and the Saturday puzzle (29...?) with the opening explorer and Deep Fritz 14:

<1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 O-O 6. Nf3 e6 7. h3> This move (7. h3) is probably good for equality. However, Fritz slightly prefers the more popular alternatives:

7. Be2 as in K Dragun vs S Narayanan, 2014

and 7. Bd3 as in D Semcesen vs T Vandenbussche, 2015

<7... exd5 8. exd5 Re8+ 9. Be2 d6 10. O-O Bf5 11. Nh4?!>

Fritz prefers the popular alternative 11. Bd3 as in A Volokitin vs S Maze, 2013

<11... Bd7 12. Bd3 Nxd5 13. Nxd5 Qxh4 14. Nc7 Nc6 15. Nxe8 Rxe8 16. Re1 Re6 17. Rxe6 Bxe6 18. Be3 Bxb2 19. Rb1 Bd4 20. Rxb7 Bxe3 21. fxe3 Qg5 22. Qe2 Ne5 23. Kh2 a5 24. Rb1 h5 25. Rd1 Qh4 26. Kg1 Qg5 27. Kh2 a4 28. a3 Kf8 29. Qd2?> Fritz indicates 29. Qd2? (-1.90 @ 24 depth) is the losing move.

Instead, White can fight on with 29. Rc1 when play might continue 29...Kg7 30. Kh1 Qh4 31. Bc2 Qxc4 32. Qxc4 Nxc4 33. Bxa4 Nxa3 34. Kg1 Kf6 35. Kf2 Ke5 36. Ke2 Bc4+ 37. Kf2 Bd5 38. Ra1 Nc4 39. Bb3 Be6 40. Ra7 Nd2 41. Bxe6 Ne4+ 42. Ke1 fxe6 43. Ra8 d5 44. Rc8 c4 45. Rg8 g5 46. g4 h4 (-0.53 @ 26 depth).

<29... Bxh3!!> This solves today's Saturday puzzle.

My failed attempt was 29... Bxc4!? which levels out after 30. Bxc4 Nxc4 31. Qd3 Nxe3 32. Qxd6+ Kg7 33. Rg1 Ng4+ 34. Kh1 Nf2+ 35. Kh2 Ng4+ 36. Kh1 (Not 36. Kg3? Qe3+ 37. Kh4 Qf2+ 38. g3 Qxg1 39. hxg4 Qh1+ 40. Kg5 Qf3 41. gxh5 Qf5+ 42. Kh4 Qxh5#) 36... Nf2+ 37. Kh2 Ng4+ 38. Kh1 Nf2+ = with a draw by three-fold repetition.

<30. Kxh3>

If 30. gxh3, Black wins after 30...Nf3+ 31. Kh1 Nxd2 32. Rxd2 Qxe3 33. Rd1 Qxh3+ 34. Kg1 Qg4+ 35. Kh2 Qxd1 with Fritz declaring mate-in-nine.

<30... h4!> This essential follow-up ensures the win.

<31. Qe1>

If 31. Kh2, Black wins after 31...Qg3+ 32. Kh1 (32. Kg1 Nf3+ ) 32... Ng4 33. Kg1 Qh2+ 34. Kf1 Qh1+ 35. Ke2 Qxg2+ 36. Ke1 Qg3+ 37. Kf1 Nh2+ 38. Qxh2 (38. Ke2 Qg2+ 39. Ke1 Nf3#) 38... Qxh2 (- 11.28 @ 20 depth).

<31... Nxd3 32. Qxh4 Nf2+ 33. Qxf2 Qh5+ 34. Qh4 Qxd1 35. Qd8+>

If 35. Qh8+, Black wins after35...Ke7 36. Qc3 Qb3 37. Qc1 d5 38. cxd5 Qxd5 39. Kg3 c4 40. Qc3 Ke6 41. Kf2 Qd3 42. Qb4 c3 (-4.80 @ 22 depth).

<35... Kg7 36. e4 Qh5+ 37. Kg3 Qe5+ 38. Kh3 Qxe4 39. Qxd6 Qxc4 40. Qe5+ Kh7 41. g4 Qd3+ 42. Kh4 Qd4 43. Qe8 Kg7 44. Kh3 Qc3+ 45. Kg2 c4 46. Qxa4 Qd2+ 47. Kf3 c3 48. Qe4 c2 49. Qe5+ Kh7 0-1> White resigns as Black will soon have an extra Queen with decisive material advantage.

Premium Chessgames Member
  Penguincw: <sjunto: ... I assume you meant Qe8, not Qf8. After Qx c1=Q, 51.Qf7+ leads to a perpetual check. so don't promote immediately. Qd1+ or Qd5+, as appropriate, fixes this. >

Yes, and thanks. :)

< sjunto: Are we the only ones home on Friday night? >

Probably not, but those who live in the same time zone as this site, it's very early Saturday morning (as in midnight).

But hey, it doesn't hurt to get outside once in a while, even if it's night time...

Premium Chessgames Member
  kevin86: I saw that the bishop sac leads to the exposure of the king (as the pawn couldn't take on penalty of the queen via a fork.)
Oct-24-15  ndg2: I did not see that white has to play 31.Qe1 after h4 (otherwise he loses even more material after 31. Kh2 Qg3+ 32. Kh1 Ng4 or even gets mated). This turns 30.Kxh3 into anerror and he better should have played Bf1 or something.
Oct-24-15  swordfish: i saw the initial B sac and that was it. The position after Qxd1, winning back the R, doesn't seem to me to be clearly won for Black, although he is a pawn up with a less-exposed King.
Oct-24-15  wooden nickel: Maybe White should have tried to give Black a taste of his own medicine responding 29... Bxh3 with 30.Bxg6. ... not that it's strong but Black still has to prove his skills.

click for larger view

Oct-24-15  barryh1976: ..Bxh3 looks pretty nasty to me!
Oct-25-15  CHESSTTCAMPS: Black has a pawn and a knight for a rook that is passive. This is the kind of position where a queen and a knight can work together extremely well, when there are holes or other weaknesses in the opponent's king position, and the knight has fork opportunities. The royal fork alignment is in play immediately, suggesting the shot

29... Bxh3! grabbing a key sheltering pawn. There are a number of defenses to consider, starting with worst first:

A. 30.gxh3?? Nf3+ 31.Kh1 Nxd2 32.Rxd2 Qxe3 33.Rd1 Qf3+ is a slaughter.

B. 30.Kxh3 h4! (Gaining a tempo. The forcing line 30... Qg4+ 31.Kh2 Qh4+ 32.Kg1 Ng4 33.Re1 Qh2+ 34.Kf1 Qh1+ 35.Ke2 Qxg2+ 36.Kd1 holds.) 31.Kh2 Qg3+ 32.Kh1 (Kg1 Nf3+ wins) Ng4 33.Kg1 Qh2+ 34.Kf1 Qh1+ 35.Ke2 Qxg2+ 36.Ke1 Qg1+ 37.Ke2 Qf2#

B.1 31.g4 Qxg4+ 32.Kh2 Nf3+ wins.

B.2 31.Qf2 Qg4+ 32.Kh2 Qxd1 and the double threat 33... Ng4+ and Qxd3 wins

B.3 31.Qe1 Qg4+ 32.Kh2 h3 33.Rd2 (gxh3 Nf3+ 34.Kh1 Qxh3#) hg 34.Rxg2 Nf3+ 35.Kh1 Qxg2+ 36.Kxg2 Nxe1+ wins

B.4 31.other Qg3#

C. 30.Be4 Nxc4! 31.Qe2 Bg4 32.Qxc4 Bxd1 with a 3 pawn lead.

Time for review....

Oct-25-15  CHESSTTCAMPS: In B.3, did not consider the game line 31... Nxd3 carefully enough.

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