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| Jul-26-17 | | patzer2: For today's Wednesday solution, I quickly found 51. Rxg6+ fxg6 52. Qc7+ any King move 53. Kf6  forcing mate.For a Black improvement, I'd get rid of 37...Ba6?! and replace it with either 37...Qc6 38. Ref2 Rg8 = or 37...Rg8 38. Rd2 Qc6 =. Black's decisive mistake appears to be 39...Rxb6?, too quickly eliminating the passed pawn at the expense of decisively weakening his position after 40. Bf3! Qd8 41. Rh7 (+2.45 @ 20 depth, Deep Fritz 15.) Instead, 39...Bb7 40. Rh2 Rg8 41. Bf3 Qxf3+  (+0.70 @ 21 depth, Deep Fritz 15) improves Black's drawing chances. |
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Jul-26-17
 | | OhioChessFan: Not sure why, but I wanted to walk my Queen with checks over to f8 along the 7th and 8th ranks before playing Kf6, but it works out the same. |
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| Jul-26-17 | | saturn2: First idea: 51 Rxg6 fxR 52 Qxe6 grabbing the g6 pawn afterwards and push through the the pawns. But it does work at all. The bishop can protect g6. Second idea: 51 Rxg6 fxR 52 Qc7+ pushing back the king to the last rank and let 53 Kf6 follow. On this square the white king cannot be bothered by checks and black is done. |
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| Jul-26-17 | | malt: Got 51.R:g6+ fg6 52.Qc7+ followed by 53.Kf6 |
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| Jul-26-17 | | RKnight: This one took me forever to figure out, and I almost gave up. But some folks such as <diagonally> found it easy. OTOH I got a few other "harder" puzzles quickly. I wonder why our individual thinking of something as clear-cut as chess is so different. |
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| Jul-26-17 | | Pedro.Akcio: You have a winning queen vs rook end game, or you can show off and sacrifice the rook for mate |
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Jul-26-17
 | | drollere: black's threat of Rxh6 focuses attention on the white R on h6. either that R has to be exchanged, or a move with check made. the finesse is to avoid 53. Kxg6, although Bd3+ doesn't seem to save the black K for very long. |
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| Jul-26-17 | | LucB: I would have played 53. Kxg6, which is bad. |
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Jul-26-17
 | | takchess: 3 Candidate Moves for 51. -
Qd8 with thoughts of f6+
Rxg6+
f5
all three moves feel like a win and I would play them if they were the only option. I went with Qd6 but as other said here not the best option. well try again tomorrow.... |
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| Jul-26-17 | | BOSTER: Maybe, It was better to play 49...Bh3 to cross the way for white rook in the black camp. |
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Jul-26-17
 | | Check It Out: <OCF> Same here. |
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| Jul-26-17 | | dark.horse: Sweet nuance at the end...
not 53.Kxg6, which would allow ...Bd3+. |
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| Jul-26-17 | | Eusebius: As always <chrisowen> provides the clearest analysis of the game. |
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Jul-26-17
| | ajk68: The key move here is Kf6! |
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| Jul-26-17 | | patzer2: <ChessHigherCat: Looking at the game, Black seemed to have a much better position until move 28. White's pieces were horribly uncoordinated, stumbling all over each other, with no open lines. Maybe Black could have maintained the advantage with 28...Nh6?> I'm not so sure White's position is so much worse than Black's after 28. hxg4. However, Stockfish 8 agrees with your assessment that Black's best try is 28...Nh6 = to  (-0.21 @ 40 depth, Stockfish 8.) Your recommended 28...Nh6 is a clear improvement over the game move <28...Ne3> allowing <29. Bxe3  >(+0.48 @ 39 depth, Stockfish 8.) Here's the detailed Stockfish 8 analysis of these two alternatives: 28...Nh6 29.Qg3 a6 30.Qh3 Qf3 31.Rg1 bxc4 32.dxc4 d3 33.Qxf3 Bxf3 34.Rd2 Nxg4+ 35.Kh3 Rb8 36.b4 Rd4 37.Rxg4 Bxg4+ 38.Kxg4 Rxc4 39.Rd1 Rc3 40.Bd2 Rb3 41.f5 exf5+ 42.Kxf5 a5 43.Ke4 axb4 44.axb4 cxb4 45.e6 Ra3 46.Bc1 Ra4 47.exf7+ Kxf7 48.Rf1+ Kg8 49.Kxd3 Rc8 50.Bb2 b3 51.Rf2 Rh4 52.Ke2 = to [-021 @ 40 depth, Stockfish 8 64]
28...Ne3 29.Bxe3 dxe3 30.Qxe3 Rd4 31.Rf2 Kf8 32.Kg3 Rcd8 33.Rh2 Ke7 34.Ree2 a5 35.Rh7 Rg8 36.Bc2 b4 37.a4 Kd8 38.Reh2 Qd7 39.Kf2 Kc7 40.g5 Kb6 41.Qg3 Bc6 42.Kf1 Qb7 43.Kg1 Rdd8 44.Qe3 Bf3 45.R7h4 Bc6 46.Kf2 Qd7 47.Rh7 Qd4 48.Qxd4 Rxd4 49.Ke3 [+0.48 @ 39 depth, Stockfish 8 64] P.S.: One really interesting try I like at move 28 for Black is 28...Re8!? which offers White a poisoned piece (diagram below): 
click for larger viewIf White takes the bait after 28...Re8 (diagram above) by capturing the poisoned Knight with 29. gxf5?, Black gets a strong and decisive advantage after the forcing line 29...exf5 30. Qf1 Re6 31. Rg2 Rh6+ 32. Kg1 Re8!  (-3.66 @ 33 depth, Stockfish 8.) If White wisely declines the greek gift (i.e. doesn't capture the Knight with the pawn,) Black still maintains equality after: 28...Re8 29.Rae2 Nh6 30.Kg3 a6 31.Bc2 Rc7 32.f5 exf5 33.gxf5 f6 34.cxb5 axb5 35.Bxh6 gxh6 36.exf6 Rxe2 37.Qxe2 Kh7 38.Qg4 Qg2+ 39.Kh4 Qh2+ 40.Qh3 Qf4+ 41.Qg4 Qh2+ = (0.00 @ 40 depth, Stockfish 8) |
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| Jul-26-17 | | Longview: I think this one <chrisowen> did get fairly easily. I got the first move but wanted to Qxe6 for some unknown reason instead of the simple check. I obviously failed to recognize that the white King controlled h6 and f6 that provides along with the black pawn on g6, a barrier. This again as pointed out by <chrisowen> as key, I should have recognized the simplicity of the position and forcefulness of the Qc7+ idea that leads to mate. With 53...Rh7 reply it is simply evoking 54. Qd8#. With 53... Bb5 then 54. Qg7#.
With 53... R(c)d3 then 54. Qb8+ Rc8 55. Qxc8#. With 53... Kg8 54. Qc8+ Kh7 55. Qe7+ Kh6 56. Qf8+ Kh7 57. Qg7# |
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Jul-26-17
 | | Jimfromprovidence: For something different, evaluate the puzzle position with black to play.
click for larger view |
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| Jul-26-17 | | clement41: Actually, the whole game deserves to be watched I reckon. It is very instructive be it in its positional or tactical developments. It features many GM hints tricks and takeaways (just to mention a few interesting positional moves:, 14...Ne5, 18 e5, 26...h5)
For instance it makes for a good tactics/endgame transition exercise to try and assess whether after Black's move 43 and 44 there is a winning zwichenzug/endgame entry for either side. |
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Jul-26-17
 | | ChessHigherCat: <patzer2> Thanks a lot for all the detailed analysis! <Your recommended 28...Nh6 is a clear improvement over the game move <28...Ne3> allowing <29. Bxe3 >(+0.48 @ 39 depth, Stockfish 8.)> I don't take any credit for that because Nh6 is the garden variety move that almost anybody would play in that situation. With Ne3, Black sacrificed a pawn as part of a greater scheme which didn't work out, unfortunately, but I don't want to blame him for it because it would be too much like saying: "You see, interesting players finish last!" <One really interesting try I like at move 28 for Black is 28...Re8!? which offers White a poisoned piece> That's true, it's a very interesting move that never even occurred to me. It even took me a minute to see the point of the follow-up N sacrifice to allow the rook lift and/or Qh6+. That's a higher level of pattern recognition and con[chessire]catenation of ideas that was completely beyond me, but maybe now I'll be able to apply similar ideas in the future. |
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| Jul-26-17 | | cabiaraphilip: Guys im new here. Where we get the pgn of this game? |
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| Jul-26-17 | | thegoodanarchist: Neil Diamond sang a song about Ildar:
"Sweet Khairullin" |
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| Jul-26-17 | | thegoodanarchist: <cabiaraphilip: Guys im new here. Where we get the pgn of this game?> Below the chess board, but above the "Kibitzer's Corner" sign, is a bunch of links. Three of them are for PGN files. |
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Jul-26-17
 | | Phony Benoni: <RKnight: This one took me forever to figure out, and I almost gave up. But some folks such as <diagonally> found it easy. OTOH I got a few other "harder" puzzles quickly. I wonder why our individual thinking of something as clear-cut as chess is so different.> We approach a chess positions with different abilities and knowledge. This in turn affects how we reason about a position, and how quickly the correct idea strikes us. For instance, the first thing I noticed was White's advanced king ready to help out in a mating attack. I have games like this one in my mind: 
click for larger view37.Rxg7! Rxf6 38.Ke5! 1-0 (Black must allow 39.Kxf6, and once the king reaches f6 mate will be inevitable. Alekhine vs Yates, 1922 Thanks to games like this I had a basic scenario in my mind: King on the 6 plus control of the 7th rank can lead to mate. When I look at puzzle, I start by quickly looking at forcing moves like checks and captures. Here, I saw that 51.Rxg6+ fxg6 would open up th e7th rank for a queen check driving Black's king back, then Kf6 would set up a mating situation. After spotting that idea, the analysis was simple. This Is my one real chess strength: I have an enormous store of such patterns that I can recognize and apply quickly. You may not have my experience or ability, which is fine; there are many ways to play chess effectively. |
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| Jul-27-17 | | Batmann: Beautiful |
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| Jul-28-17 | | thegoodanarchist: <Phony Benoni: ...
We approach a chess positions with different abilities and knowledge.> I still don't understand how these chess positions acquire different abilities and knowledge! |
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Kibitzing
sac: 51.Rxg6+