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Lazaro Bruzon Batista vs Eduardo Patricio Iturrizaga Bonelli
IberoAm sfB (2008), Morelia/Linares, rd 1
Queen's Gambit Declined: Ragozin Defense (D38)  ·  1-0



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Kibitzer's Corner
Premium Chessgames Member
  Penguincw: The Sunday puzzle!

24.Nxf7 is obvious, and it would be nice if black captured, but they don't have to. The unforced mate I envisioned in my head was 24...Kxf7 25.Qe6+ Kg6 26.Qf7+ Kf5 28.Be6# 1-0. Now isn't that a beauty?!

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Oct-11-15  diagonalley: hmmm... there seem to be a multitude of possible lines following 24.NxP ... i figured that white's QR8-KR1 diagonal would have to be blocked at some point but chose the KBP first, rather than the N on B3... 'insane' indeed!
Oct-11-15  hcgflynn: Isn't 28 - Ng5 better with the threat of Nf3+ besides mating?
Oct-11-15  Cheapo by the Dozen: I was looking at d5 as the second move, for obvious reasons of interference. But I guess de isn't as much of a threat as I was assuming, because it reinstates Black's mate threat ...
Oct-11-15  wooden nickel: It's apparent what Black's last move was; the bishop on g2 stands out like a sore thumb. Cutting of its defense with 24.f3 isn't enough and preparing that with 24.Kh2 is too slow. The sac on 24.Nxf7 threatens a "Penguin" mate but can be met with 24... Bh3, defending and threatening mate at the same time. 25.Nxh6+ gives this wonderful Sunday puzzle another kick!
Oct-11-15  crazyhead: his beat me i am alow 'player mondays are
Premium Chessgames Member
  morfishine: <24.Nxf7> is sweet and a nice demolition but is more on the level of a Wednesday puzzle; Perhaps some other move is "insane"
Oct-11-15  nevzka: Why black resign? After ..QxQ, KxQ Bf5, i guess position still equal. Did I miss something?
Oct-11-15  rogl: yes, you missed that white has one more rook than black.
Oct-11-15  Doktorn: <nevzka>White will have a rock for a knight. After Qxh2 34. Kxh2 Bf5 35. Bxf5 exf5 36. Re5 black should also lose the knight (or rock of the knight is moved) and be a whole piece up.
Premium Chessgames Member
  patzer2: Here's my look at a few points in the game and today's Sunday puzzle <24.?> with Deep Fritz 14:

<22...Ne7? 23. Ne5> (+0.57 @ 22 depth) After 22...Ne7?, Black's game starts to deteriorate.

Instead, Fritz indicates Black can hold with 22... Rd7 when play might continue 23. Bf4 Rcd8 24. Qe3 Bd6 25. Bxd6 Rxd6 26. Bb1 R6d7 27. Ne4 Nxe4 28. Qxe4 Nxd4 29. Qh7+ Kf8 30. Nxd4 Rxd4 31. Rxd4 Rxd4 32. Qh8+ Ke7 33. Qxg7 Qd8 34. Ba2 Rd1 35. Qc3 Qg8 36. Qb4+ Rd6 37. g3 a5 38. Qf4 Qg7 39. Bc4 Qd4 40. Qxd4 Rxd4 41. Rc1 Rd2 42. b4 axb4 43. axb4 Kd6 44. Kf1 (-0.48 @ 25 depth).

<23...Bxg2?> According to Fritz, this move (23...Bxg2?), allowing 24. Nxf7!! (+2.51 @ 23 depth), is the decisive mistake.

Though none of the alternatives are pleasant, Black can put up more resistance resistance with 23... Rxc3 when play might continue 24. bxc3 Bxg2 25. Nxf7 Bh3 26. Nxh6+ Kh8 (not 26... gxh6? 27. Bxe6+ Bxe6 28. Qxe6+ Kg7 29. Bxh6+ Kg6 30. h5+ Kxh6 31. Qxf6+ Kh7 32. Rd3 Rd7 33. d5 Qe8 34. d6 b5 35. Rde3 Qxh5 36. dxe7 Qg4+ 37. Rg3 ) 27. Nf7+ Kg8 28. d5 Kxf7 29. Qd3 (+0.86 @ 24 depth).

<24. Nxf2!!> This demolition combination, as <morfishine> correctly classifies it, solves today's Sunday puzzle and destroys Black's position.

Passive defense with 24. f3? fails to 24...Bh3 when play might continue 25. h5 Bh5 26. Qg2 Nc6 27. Nxc6 Qxc6 28. Bxh6 Nxh5 29. Bg5 Rd7 (-1.31 @ 22 depth) with Black consolidating the extra pawn advantage.

<24... Bh3> This move puts up the most resistance.

If Black accepts the sham sacrifice with 24... Kxf7, then White wins after 25. Qxe6+ when play might continue 25...Ke8 (25... Kg6 26. Bb1+ Kh5 27. Re5+ Kxh4 28. Bxh6 Ng4 29. Bg5+ Kh3 30. Bxe7 g6 31. Re3+ Bf3 32. d5 Rxc3 33. Rxc3 g5 34. Rxf3+ Kh4 35. Rdd3 Nxf2 36. Kxf2 Bxe7 37. Qh3#) 26. d5 Bh1 27. Kxh1 Rc5 28. Kg1 Qc8 29. Qxc8 Rdxc8 30. d6 Rd8 31. Bf4 Rd7 32. Bb3 a6 33. dxe7 Bxe7 34. Rd6 Rb7 35. Rde6 Kf8 36. Ne4 Nxe4 37. R1xe4 Rb5 38. Bc4 Rc5 39. Bd6 Rxc4 40. Rxc4 Bxd6 41. Rc8+ Kf7 42. Rxd6 (+10.37 @ 22 depth).

<25. Nxh6+!> This follow-up is critical, as Fritz indicates the alternatives allow Black to turn the tables and win.

<25...Kh8> Fritz indicates Black has nothing better.

If 25... Kh7, White overpowers the black position after 26. Qd3+ when play might continue 26...Bf5 27. Nxf5 exf5 28. Bg5 Qb7 29. Be6 Rb8 30. d5 Kh8 31. d6 Neg8 32. d7 Bc5 33. Bxg8 Rxg8 34. b4 (+4.80 @ 20 depth).

<28...Nc5> If 28...Rxd8, then White wins decisive material after 29. Qxe4 Qxe4 30. Rxe4 Nd5 31. Bg5 Rd7 32. Rc1 Bd6 33. Rc8+ Kf7 34. Bc4 (+3.15 @ 22 depth).

<33. Kh1 1-0> Black resigns in lieu of 33...Qxh2+ 34. Kxh2 Bf2 35. Rh1 Bf5 36. Bxf5 exf5 37. Bg5 Rd6 38. Rd2 Bc5 39. Rhd1 (+7.66 @ 23 depth).

Premium Chessgames Member
  patzer2: <Penquincw> <The unforced mate I envisioned in my head was 24...Kxf7 25.Qe6+ Kg6 26.Qf7+ Kf5 28.Be6#> You're good there up until 26. Qf7+?, allowing 26...Kh7 (-2.70 @ 20 depth). Instead, Fritz @ 25 depth indicates 26. Bb1+ forces mate-in-ten.

Also, you've got me beat on the 24. Nxf7!! Sunday solution, as my failed try was the passive 24. f3? allowing 24...Bh3 .

Premium Chessgames Member
  agb2002: I haven't found the time for this interesting puzzle today.
Oct-11-15  bsteelaway: Why not 28.....Nc3? attacking with discovered mate threat
Premium Chessgames Member
  patzer2: After 28...Nc3, 29. Bxe6+ Bxe6 (forced to avoid mate-in-one) 30. Qxe6+ followed by 31. bxc3 wins.
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