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Eduardo Iturrizaga Bonelli vs Vasily Papin
Aeroflot Open (2010), Moscow RUS, rd 4, Feb-12
Indian Game: Anti-Nimzo-Indian (E10)  ·  1-0

ANALYSIS [x]

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sac: 16.Nxf7 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Feb-19-10  lmanuel: EXCELLENT!
Nov-08-15
Premium Chessgames Member
  Penguincw: Hoping today's puzzle would be as easy as yesterday's. Otherwise, tomorrow's Monday!

Anyway, looking at the moves, they're all gorgeous. I didn't get any of them, but they are just spectacular, especially with the double exchange sac (one was declined), in addition to a knight sac!

In the final position, white has more than enough compensation, but I'm not sure how white should proceed.

Nov-08-15
Premium Chessgames Member
  An Englishman: Good Evening: Another speculative sacrifice for Sunday; impossible to see through to the end. Got the first four moves, about the best I can do at my age.
Nov-08-15
Premium Chessgames Member
  al wazir: Not a clue. Black's position looks perfectly solid. I have no idea how to continue after 17...Kg8.
Nov-08-15  Arnefish: whites f pawn cant be stopped, queens easily.
Nov-08-15  nalinw: It is definitely Sunday - truly insane.

I thought Nxf7 was the only move but didn't see much more.

On 17. .... Kg8 how about
18. Nxc6 Bxc6
19. Qxe6+ regaining the piece and ending two pawns up

Moral of the story - NEVER, EVER put your Queen on a2. It is like a Queen sacrifice!

Nov-08-15  nalinw: Oops - sorry - I meant a7 of course.
Nov-08-15  ToTheDeath: Saw up to 19.Qh5 and knew white had more than enough compensation for the piece. Glad to see I was right. Good puzzle and beautiful game.

Al wazir after 17...Kg8 Nc6 hangs.

Nov-08-15  diagonalley: fan-bloody-tastic! ... we don't know how far ahead white had calculated (half-a-dozen plus moves maybe) but the leap of faith and execution are exemplary.
Nov-08-15  patzer2: My failed Sunday solution was 16. d5 which fizzles out to level after 16...Nxe5 17. Qxe5 Bxd5 18. Ne3 Qd7 = (0.28 @ 21 depth, Deep Fritz 14).

Correct is the game continuation with the demolition 16. Nxf7! (+2.12 @ 21 depth, Deep Fritz 14).

Black can complicate in the follow-up with 18...Ne4, but white wins after 19. Rc7 when play might continue 19...Ng5 20. Qg4 Kf8 21. Bxh7 Nxh7 22. Rdd7 Qb8 23. Rxb7 Qc8 24. Rbc7 Qb8 25. Ba3 Kg8 26. Bxe7 with Deep Fritz 14 announcing mate-in-nine.

While 22. Qh8+ (+9.16 @ 25 depth) wins, as in the game continuation, Deep Fritz 14 finds a stronger continuation with 22. Rxc5 (+19.50 @ 23 depth) when play might continue 22...Rxc5 23. Rd3 Ke7 24. Qxg7+ Kd8 25. Rh3 Ne7 26. Rh7 Bc8 27. Qf8+ Kc7 28. Qxe7+ Kb8 29. Qd6+ Rc7 30. Be4 b5 31. Bd4 b4 32. Bb6 Bd7 33. Rxd7 Qxb6 34. Qxb6+ Kc8 35. Qxc7#.

For a Black improvement, I like 13... dxc4 as in H Mas vs Deepan Chakkravarthy J, 2009.

Nov-08-15  MindCtrol9: This looks like White had the spirit of M Tal,a very nice combination.I saw Nxf7 like a promising continuation,but I did not tried to solve it because I thought a different move,too.Let's go to see the solution,I said to myself.
Nov-08-15
Premium Chessgames Member
  agb2002: The material is identical.

All white pieces look ready to attack the black king starting with 16.Nxf7 Kxf7 17.Ne5+ Nxe5 (else 18.Nxc6 Bxc6 19.Rxc6 wins a pawn and that on e6 looks lost) 18.dxe5:

A) 18... Nd5 19.Qh5+

A.1) 19... Kf8 20.Bxh7 with two pawns for a knight and many threats (Qf3+, Bc4, Rc4, Rd4, etc.). For example, 20... Rec8 21.Bg6 Bc5 (21... Rxc1 22.Qh8#) 22.Qh8+ Ke7 23.Qxg7+ Kd8 24.Qf7 seems to win a fourth pawn while keeping the attack.

A.2) 19... Kg8 20.Bxh7+ Kf8 (20... Kh8 21.Bg6+ Kg8 22.Qh7+ Kf8 23.Qh8#) 21.Qf3+

A.2.a) 21... Nf6 22.Qf4 (22.exf6 Bxf3) seems to recover the piece with an extra pawn and a very strong attack.

A.2.b) 21... Bf6 22.exf6 with the same conclusion as A.2.a.

A.3) 19... g6 20.Qxh7+ Kf8 21.Bxg6 and mate next.

B) 18... Nd7 19.Qh5+ Kf8 20.Bxh7 with the double threat Rxd7 and Bg6.

C) 18... Ng8 19.Qh5+ Kf8 20.Rc4 looks good for White. For example, 20... Nh6 21.Rf4+ Nf5 22.g4 recovers the piece while keeping the attack.

Nov-08-15  morfishine: <16.Nxf7>
Nov-08-15  Pawn Slayer: This shows astonishing positional awareness. He could not possibly have seen the whole thing through to the end, but trusted his instinct that, with the black queen temporarily out of action on a7, he had time to wreak havoc on the king's side.

But it took guts to keep hurling pieces into the sacrificial fire. Looks like the spirit of Nezhmetdinov still lives!

Nov-08-15  Braidwood: Very nice! What about 16. d5, Nxe5 17. Nxe5, Bxd5 18. Ng4 ?
Nov-08-15  BOSTER: After wild 15...Qa7 protecting the pawn, if 16.Nxf7 Kxf7 17.Ne5 Nxe5 18.dxe5 Be4 19.Bxe4 Nxe4 20.Qxe4 Kg8 White combo will win only the pawn.
< al wazir: 17...Kg8>. 18.Nxc6 Bxc6 19.Rxc6 and e6 and b6 pawns are weak.
Nov-08-15
Premium Chessgames Member
  thegoodanarchist: I didn't calculate - my intuition told me 16.Nxf7. Then I looked to see if I was right.

Since I didn't look any further, either it doesn't count as solving, or I could take the Tal approach and say it cannot be calculated and the sacrifice should be made on principle.

In which case I solved it! Wow, for a patzer like me that is quite a surprise.

Nov-08-15
Premium Chessgames Member
  Once: Wow - an insane puzzle indeed. I got as far as 20. Qxh7 winning two pawns and an attack for the sacrificed knight.

The rest is highly complicated, but we end up asking the usual question of "how much do we need to see?". I doubt if White calculated the attack all the way through to the end.

Nov-08-15
Premium Chessgames Member
  Breunor: The great thing about the puzzle was playing through the whole game. A work of art by white!
Nov-08-15  dnp: got the first few moves, but the whole game was a work of art.
Nov-08-15  rczcarvalho: Push f pawn and nothing will stopped it.
Nov-08-15
Premium Chessgames Member
  Check It Out: Great game and puzzle. I saw the knight sac on f7, the second knight check, possible recaptures on c6 and e6+ if 17...Kg8, and that's about it.
Nov-08-15  beenthere240: Perfect for monday.
Nov-08-15  PJs Studio: White couldn't see to the end of this! No way. Fischer, Kasparov, Karpov, nor Magnus could see this. The king hunt was on after Nxf7! And that's all that mattered.

Love how at the end black can't move a piece and whites kingside marches. Beautiful.

Nov-08-15
Premium Chessgames Member
  al wazir: <nalinw: On 17. .... Kg8 how about 18. Nxc6 Bxc6 19. Qxe6+ regaining the piece and ending two pawns up>.

Yes, that works. Thanks.

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