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Daniele Vocaturo vs Vasilios Kotronias
Reggio Emilia (2005/06), Reggio Emilia ITA, rd 8, Jan-05
Scandinavian Defense: Main Lines. Mieses Variation (B01)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
May-11-21  zb2cr: I have to confess, I'm not seeing anything immediately terrifying for Black at move 31. Why did he resign at that point--he was down Queen for Rook for 10 moves--why give up at that particular time?
May-11-21
Premium Chessgames Member
  agb2002: White has the queen for a rook.

Black threatens Rhe8 and f6.

White has Bxg7, Nd4 and Kf4.

After 25.Bxg7 Rhe8+ 26.Kf4 Re4+ 27.Kg3 Rg8 28.h3 allows Kh2 and prevents an eventual Rg4.

May-11-21
Premium Chessgames Member
  drollere: <Why did he resign at that point>

after black moves the attacked R, Nxf7 wins another Kside pawn and threatens Nd6+ and both Q and R come into play. if Bxf7 then Qf5+ loses the R, and if Rxf7 then Qxe6+ loses the B.

May-11-21  mel gibson: I saw the first ply and didn't know where it would lead.

Stockfish 13 doesn't see any immediate knockout blow either:

25.Bxg7

(25. Bxg7 (♗e5xg7 ♖h8-e8+ ♔e3-f4 ♖e8-e4+ ♔f4-g3 ♖e4-e6 ♘f3-h4 ♖d8-g8 ♖h1-d1 f7-f6 ♖d1xd5 ♖g8xg7+ ♔g3-h3 ♖g7-d7 ♖d5-h5 a7-a6 ♕c3-c4 ♖e6-e8 ♘h4-f5 ♔c8-b8 ♖h5-h6 ♖e8-f8 ♕c4-c5 ♖d7-f7 ♕c5-d6+ ♔b8-a8 ♕d6-a3 ♖f8-d8 ♕a3-b3 ♖d8-f8 ♕b3-a4 ♖f7-c7 ♕a4-a3 ♖f8-d8 ♘f5-d6 ♖c7-d7 ♖h6xf6 ♔a8-b8 ♕a3-c5 ♘c6-e7) +6.75/38 322)

score for White +6.75 depth 38.

May-11-21  stacase: I finally decided to snatch the Pawn. Then what?
May-11-21  Brenin: I chose 25 Kf4, allowing the K to escape from his vulnerable position on the e-file and to find safety via Kg3, h3 and Kh2. With White Q vs R ahead, I saw no point in opening up the g-file for Black with Bxg7.
May-11-21  saturn2: <Brenin: I chose 25 Kf4,> It is problematic 25...f6 26. Bd4 Bxf3
May-11-21
Premium Chessgames Member
  perfidious: As <NBZ> asked: why on earth is this a puzzle?
May-11-21  goodevans: The position after Black's 19th looks about right for a Tuesday puzzle:


click for larger view

<20.?>

I imagine that's what was intended.

May-11-21  RandomVisitor: The whole puzzle seems to be set up by 19...Nb8, which allows 20.Be5 and the queen sacrifice leading to the puzzle. 19...b6 is likely equal.

Black wins earlier with 18...Kb8 19.Nd4 Ka8 or 16...Qxh1 17.Bxb7 Qb1 18.Bxa8 Qxc2.

White had 15.0-0 = .

May-11-21  Brenin: <<saturn2>: <Brenin: I chose 25 Kf4,> It is problematic 25...f6 26. Bd4 Bxf3.> Thank you, that's true, but White is so far ahead in material that he can afford to concede the B in order to simplify into a (probably?) won endgame. For example 25 Kf4 f6 26 Rd1 fxe5+ 27 Nxe5 Bxg2 28 Rxd8+ Rxd8 29 Kg3 Bd5 30 Nxc6 Bxc6 31 Qxg7, with Q+P for R+B.
May-11-21  awfulhangover: Where is the puzzle?
May-11-21
Premium Chessgames Member
  perfidious: The challenge here, as with many another POTD of recent vintage, appears to be in sussing out where the problem should actually begin rather than the solution per se.
May-11-21  TheTamale: My spiritual teacher looked over the position and said, "Perhaps the worst puzzle ever. Or perhaps the best. But, above all, a puzzle." And I said, "Er, not really."
May-11-21  Walter Glattke: The puzzle move was 16.-Qxh1 or -Qb2!?
May-11-21
Premium Chessgames Member
  perfidious: <Walter Glattke: The puzzle move was 16.-Qxh1 or -Qb2!?>

Certainly that would be a puzzle at the board, and one which was not solved by the experienced grandmaster at the time.

A <cg> POTD?

I think not.

May-11-21  Cellist: I considered Bxg7, Kf4, and Rd1 (which I chose). I believe there are several solutions. Rd1 wins, although less overwhelmingly than the obvious Bxg7: This is what the engine says about 25. Rd1: +4.48 (17 ply) 25...f6 26.Bd4 h5 27.Ke2 Rhe8+ 28.Be3 Re7 29.Kf1 Rc7 30.Bf4 Bc4+ 31.Ke1 Rxd1+ 32.Kxd1 Rd7+ 33.Ke1 Bd5 34.Ke2 Kd8 35.Qc5 Ke8. 36.Bd6 Bxa2 37.Qxh5+ Bf7. The problem here is simply to select the best move and not see it as a problem, which encouraged me to look for more surprising but less convincing moves.
May-11-21
Premium Chessgames Member
  chrisowen: Mice i vast Bxg7 hack able its leeway live blocker tick vast hive mice i vast flocks rosa pars raps phis vint chimney vagabond dew its quibble lent jazzy its a ko fiddle huts vast pry in yips eg gone knows avid awooga gangways tots adds eeoyore keys axioms i vast afford jiffys abattoir blav its eunich Bxg7 toe it u rank doge.
May-11-21  StevieB: Very tough for a Tuesday.
May-11-21
Premium Chessgames Member
  Dionysius1: Looks like Black should have taken the second rook. His Q can come back to b1 to stop White's WSB taking on b7 (needs to get back to d3). I can't find a way to justify W's sacrifice after that.
May-11-21
Premium Chessgames Member
  drollere: <why on earth is this a puzzle?>

perhaps this is the real puzzle.

May-11-21
Premium Chessgames Member
  chrisowen: Nevermind g7 is not an instant knockout no?
May-11-21
Premium Chessgames Member
  benveniste: I spent too long trying to see what was Black's threat. I finally decided to give up on the puzzle and grab a pawn.
May-11-21  RandomVisitor: 11.0-0-0 was worth examining:


click for larger view

Stockfish_21050709_x64_modern:

<63/78 2:13:20 +0.61 11.0-0-0 Bg4 12.d5> Bxf3 13.gxf3 cxd5 14.Bxd5 0-0-0 15.Be4 Nc5 16.Bc3 Rxd1+ 17.Rxd1 Qf4+ 18.Kb1 Nxe4 19.fxe4 Bc5 20.b4 Bb6 21.Rg1 Rg8

May-12-21  RandomVisitor: There was 8.Ne4 followed by 9.Ng3:


click for larger view

Stockfish_21050709_x64_modern:

<63/81 15:05:42 +0.62 8.Ne4 Qd8 9.Ng3> Bg4 10.c3 Nbd7 11.h3 Bxf3 12.Qxf3 Be7 13.0-0 0-0 14.Rfe1 a5 15.a3 Re8 16.Rad1 Qc7 17.Bd3 Rad8 18.Bc2 c5

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