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Ivan Sokolov vs Aleksey Dreev
GMA (2001), Dos Hermanas ESP, rd 3, Apr-21
Semi-Slav Defense: Anti-Moscow Gambit (D44)  ·  0-1

ANALYSIS [x]

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Given 27 times; par: 33 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Apr-29-17  Walter Glattke: 23.cxb7 Ke7 24.Qxd7+ Kf6 25.Qd4+ e5
nearing to Kg7 Rxg2+ +
Apr-29-17  mel gibson: DR4 64 bit makes a different second move:
White's Queen protects the f2 square instead of checking the black King.

22. Rd1 Qxh4 (22. .. Qxh4 (♕d8xh4 ♕d3-e3 ♕h4-h2 f2-f3 ♕h2-h4+ ♔e1-e2 ♘e4-g3+ ♔e2-e1 ♘g3-h1+ ♔e1-d2 ♗b7xc6 ♗b5xc6 ♕h4-f2+ ♕e3xf2 ♘h1xf2 ♗c6xa8 ♘f2xd1 ♘a4xb2 ♘d1xb2 f3-f4 ♔e8-e7 ♗a8-f3 ♘d7-c5 ♔d2-e3 ♖g8-d8 ♗f3xg2 ♖d8-d3+ ♔e3-e2 ♘c5-a4 ♔e2-f2 ♘a4xc3) +6.06/17 114)

score for black +6.06 depth 17

Apr-29-17  Walter Glattke: Oh, yes in move 22 the queen is not on d4.
Apr-29-17  Walter Glattke: 22.-Qxh4 23.Qd3-e3 Qh4-h2
idea: 24.cxb7 Qxg1+ 25.Ke2 Qxd1+ 26.Kxd1
b1Q+ 27.Ke2 g1N+ 28.Kd3 Qxb5+ 29.Qxb7
very smart, that computer.
Apr-29-17  Walter Glattke: 22.-Qh4 23.Qe3
Qh2 24.Qxe4, that guards b1, 24.-Qxg1+ 25.Ke2 Qxd1+ 26.Kxd1 g1Q+ always a move Fails for White.
Apr-29-17  morfishine: This is more of the insane variety, what with the numerous twist and turns

Very entertaining

*****

Apr-29-17  Walter Glattke: I found the failing move: 16.Nd2, while
16.dxc5 gxf3 17.c6 is 2:1 moves, too slow, I mean.
Apr-29-17  clement41: Caution: 31...Qh4+?? allows 32 f4 when, although still winning, black still has some work to do. It's not every day you see ...g2 attacking Rh1 then ...b2 attacking Ra1 !
Apr-29-17  scholes: <morfshine> Leaving your king to capture check by Queen rook battery. When your one other piece is hanging whose capture will threaten promotion with check. Only to threaten mate on a square which is easily protected.

Even first move is crazy and there are lot of crazy variations

Apr-29-17
Premium Chessgames Member
  An Englishman: Good Morning: Not sure how much credit, if any, to claim. Solved the first three moves, but the complications are berserk, and you have to see so many variations and subvariations.
Apr-29-17
Premium Chessgames Member
  catlover: Nothing elementary about this puzzle...both sides have hanging pieces, possible pawn promotions, myriad complicated variations...a beautiful, insane puzzle. I couldn't even find the first move.
Apr-29-17  mel gibson: <Apr-29-17 Walter Glattke: 22.-Qxh4 23.Qd3-e3 Qh4-h2 idea: 24.cxb7 Qxg1+ 25.Ke2 Qxd1+ 26.Kxd1
b1Q+ 27.Ke2 g1N+ 28.Kd3 Qxb5+ 29.Qxb7
very smart, that computer.>

Smarter than any human.
It considers 10s of millions of board combinations.

Apr-29-17
Premium Chessgames Member
  wtpy: With apologies to F. Scott Fitzgerald grandmasters are different they see more deeply.I would be skeptical of any claims of solution; like an Englishman, I got the first three moves but for some reason moving forward not only did I miss the subtleties of the pawn promotions, I wanted to put black queen on h1.
Apr-29-17  Walter Glattke: I have to say one thing - not only light, water or shocks have evolution waves, a grandmaster must think forward and backward, and one of the new Computers will always proof, of any previous actions could be continued.
Apr-29-17
Premium Chessgames Member
  patzer2: Here's my look at today's Saturday puzzle (22...?) and game with the chessgames.com opening explorer, Deep Fritz 15 and Stockfish 8:

<1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6> This is the most popular move in the QGD slav. The second most popular alternative is 4...dxc4 as in the drawn game Nakamura vs S Shankland, 2017

<5. Bg5> This is the second most popular move. Most often played is 5. e3 as in White's win in S Shankland vs Robson, 2017

<5...h6 6. Bh4> This is the second most popular move. Most often played is 6. Bxf6 as in the drawn game Van Wely vs A Giri, 2017.

<6...dxc4 7. e4 g5 8. Bg3 b5 9. Be2 Bb7 10. h4 b4> This move is seldom played, but as seen in this game can pose White considerable problems if he's not prepared for it. Most often played here is the popular move 10...g4 as in White's win in Grischuk vs Gelfand, 2007

<11. Na4> This is OK, but the computer preference and slightly more popular move is 11. hxg4 (+0.41 @ 24 depth, Stockfish 8) as in White's impressive win in Pelletier vs E Rodriguez Guerrero, 2006

<11...Nxe4 12. Be5 Rg8 13. Qc2> According to the opening explorer, this is the only game in which this move was played. The first player has had better luck with the computer preference 13. hxg4 as in White's win in
Xu Jun vs P H Nielsen, 2000

<13...c5 14. Bxc4 g4 15. Bb5+ Nd7 16. dxc5 b3!> This instructive positional pawn sacrifice is clearly Black's best move, assuring excellent winning chances if White fails to find the equalizing move 17. axb3 =.

<17. Qd3?> This appears to be White's decisive error. Certainly, it's the point at which the first player's game takes a turn for the worse and from which he never recovers. Instead, White can hold with 17. axb3 Qa5+ 18. Nd2 Qxb5 19. Nxe4 Qb4+ 20. Nac3 Bxc5 21. Bg3 = (0.00 @ 29 depth, Stockfish 8.)

<17...gxf3> to (-1.56 @ 27 depth, Stockfish 8). This is probably winning, but according to the silicon monster even stronger here is 17...Bd5! (-3.06 @ 29 depth, Stockfish 8.)

<18. c6 Bb4+ 19. Bc3 Bxc3+ 20. bxc3 fxg2 21. Rg1 b2 22. Rd1?> This allows Black a clearly decisive attack after 22...Qxh4! (-8.01 @ 25 depth, Stockfish 8.) Instead, White can put up much more resistance with 22. Nxb2 Qxh4 to (-2,19 @ 28 depth, Stockfish 8.)

<22...Qxh4!!> This solves the Saturday Apr 29, 2017 chessgames.com puzzle with a decisive attack on the uncastled White King.

<23. Qxd7+ Kf8 24. Qd4 b1=Q 25. Rxb1 Rd8 26. cxb7>

If 26. Qe3 then Black wins after 26...Rg5 27. cxb7 Nxf2 28. Qxf2 Qe4+ 29. Qe2 Qxb1+ 30. Kf2 Rf5+ 31. Kxg2 Rg5+ 32. Kh3 Qxg1 (# 13, Deep Fritz 15 @ 24 depth.)

If 26. Qb4+ then Black wins after 26...Rd6 27. Qb2 Qh2 28. Ke2 Qe5 29. Bd3 Nc5+ 30. Kd1 Rxd3+ 31. Kc2 Qe2+ 32. Kc1 Qf1+ 33. Kc2 Qxf2+ 34. Kc1 Qf4+ 35. Kc2 Qd2#.

<26... Rxd4 27. b8=Q+ Rd8 28. Qxa7 Qh2 29. Ke2 Rd2+ 30. Ke3 Rg3+ 31. Kxe4 Rg4+ 0-1>

Apr-29-17  Walter Glattke: Maybe stockfish 8 finds more resistance one move earlier with 21.Qxd7+ Qxd7 22.cxd7+ Ke7 23.Rg1. Qh4 not possible.
Apr-29-17  morfishine: <scholes> These are the types of positions I run into playing Chess960

lol

*****

Apr-29-17
Premium Chessgames Member
  patzer2: After 21.Qxd7+, Stockfish 8 gives 21... Qxd7 22.cxd7+ Ke7 23.Rg1 b2 24. Rb1 Nd6 25. Be2 Rab8 26. f3 Bc6 (-3.85 @ 32 depth) when Black will mop up enough of the remaining White pawns to assure the win.
Apr-29-17
Premium Chessgames Member
  agb2002: Black has an extra knight and pawn.

White threatens dxb7, dxd7+, Qxe4, Qxd7+ and Nxb2.

Black can protect the knight on e4 and threaten mate with 22... Qxh4:

A) 23.cxd7+ Kd8

A.1) 24.Qe2 Qh2 looks winning.

A.2) 24.Qe3 Qh2

A.2.a) 25.Ke2 Qh5+ followed by Qxb5 seems to win.

A.2.b) 25.f4 Rg3 26.Qd4 Qh4 with the threat Re3# looks very good for Black.

A.2.c) 25.f3 Qh4+ 26.Ke2 Ng5 with the threats Nf3 and Bxf3+.

A.3) 24.Qd4 Qh2 looks similar to A.2.

B) 23.cxb7 Qxf2#.

C) 23.Qxd7+ Kf8 24.Rd2 b1=Q+ wins.

Apr-29-17  Walter Glattke: It's hard to say that, but stockfish
get more problems after 26.Rxb2, threatening Nc5 and Rxg2 later. It's , but less than -3, I think.
Apr-29-17  Cheapo by the Dozen: Like some other solvers, I figured out the first move, but was premature in when I planned to play ... Qh2.
Apr-29-17  1stboard: Amazing , how does one get not one but two passed pawns on the seventh rank after only 21 moves .... ?
Apr-29-17
Premium Chessgames Member
  PhilFeeley: What a wild game. White must have thought he was winning up until the very end.
Apr-30-17  paavoh: Just a wonderful game and an excellent puzzle. And this from Dreev who is probably not known for his attacking style. He played like Tal or Shirov here.
Jun-16-17
Premium Chessgames Member
  plang: PlayedHermanas 2001 which was a 10 player round robin; Dreev and Smirin tied for 1st with +2. 5..h6 sidesteps the supersharp Botvinnik line (5..dxc). Historically White had responded with the positional 6 Bxf6 but it was around this time that the gambit 6 Bh4 was becoming popular. This line is every bit as double-edged as the Botvinnik variation. A month later at Sarajevo Atalik played the stronger 11 hxg against Dreev but Black still won. Why not 14 hxg opening the file for his rook? Voted the 2nd best game in Informant #81.
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