| May-21-16 | | znsprdx: Swashbuckling like the good old days of Lasker and Napier. I presume that time pressure had the upper hand -would 37. Ne6 + have made any difference? |
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| May-22-16 | | Calar: 37.Ne6+ Ke5 and Black already has numerous threats White has no way of defending against: a) Kxd5 winning a piece
b) Rxe6 winning two minor pieces for a rook with an easily winning endgame
c) Bxe3+ with Bc1 and b-pawn can only be stopped by giving away the piece |
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May-23-16
 | | patzer2: Black's surpise 20...d4!  (-4.00 @ 28 depth, Stockfish 7) proves White's g-pawn advance with 19. g4? and 20. g5? to be a flawed plan.Instead, 19. Rd2 Ne5 20. Rfd1 Rd7 21. Nd3 = holds the position. |
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| Jan-13-18 | | mel gibson: Quite difficult with many threats.
Stockfish 8 says:
20.g5 d4
(20. .. d4 (d5-d4 ♗c3xd4 ♘e5-f3+ ♕h3xf3 ♗c6xf3 ♗d4xf6 ♕a8-c8 ♖d1-c1
h7-h6 ♘e2-g3 h6xg5 ♗f6xg5 ♖a7-b7 ♗b3-d5 ♗f3xd5 ♘f4xd5 ♖e8-e5 ♘d5-f6+ ♔g8-g7
f2-f4 ♖e5-e6 ♘f6-d5 ♖e6-d6 e3-e4 ♖b7xb2 f4-f5 ♖b2xa2 ♘d5-c3 ♖a2-b2 ♘c3-a4
♖b2-b4 ♘a4xc5 ♖d6-c6 ♘c5-d3 ♖b4-b3 ♖c1-d1 ♔g7-g8 ♖f1-f2 ♖c6-d6 ♖f2-d2 g6xf5
e4xf5 ♕c8-b7 f5-f6 ♕b7-b6+ ♔g1-f1) +4.03/34 160) score for black +4.03 depth 34 |
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Jan-13-18
 | | wtpy: Much easier than yesterday. 20...d4 screams to be played. |
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Jan-13-18
| | patzer2: For today's Saturday puzzle solution, I remembered 20...d4! -+ from my look last year. For an improvement, instead of 16. Nce2 Bc6 = (-0.13 @ 30 ply, Stockfish 8), White can secure the advantage and maintain the initiative with 16. Bc1 Bd6 17. Bb3 c4 18. Ba4 ⩲ (+ 0.44 @ 34 ply, Stockfish 8). |
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| Jan-13-18 | | mel gibson: <wtpy: Much easier than yesterday. 20...d4 screams to be played.> Yes but the game is not so easy.
I did an very interesting computer experiment.
Using my Arena 3.5.1 interface play computer against computer - I let a weaker engine the Arena SOS 5.1
with a rating of about 2560 play the winning side Black in this game at move 20 &
let Stockfish 8 - rating about 3300 - play White
at 5 seconds each per move.
Guess what? - Stockfish 8 got a draw out of the game at move 64! |
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Jan-13-18
 | | diagonalley: ok, but even if you get the first move, the continuation/s seem damn near impenetrable. <diagonalley>: nul points :-( |
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| Jan-13-18 | | mel gibson: < diagonalley: ok, but even if you get the first move, the continuation/s seem damn near impenetrable. <diagonalley>: nul points :-(> Yes - and a human would not throw away
their Queen as Stockfish 8 did -
that's exactly what the human player did in the example above -
played so as not to lose their Queen - which was the wrong move.
This game is very difficult & beyond almost any player today. |
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Jan-13-18
 | | agb2002: Only two pawns traded.
White threatens gxf6 and exerts pressure on the d-pawn and on the a1-h8 diagonal. Black can open the a8-h1 diagonal and threaten Nf3+ followed by Ng5+, so 20... d4: A) 21.gxf6 Nf3+ 22.Kg2(h1) Ng5+ wins decisive material. B) 21.Be4 Nxe4 wins a piece.
C) 21.Qg3 Ne4 wins a piece.
D) 21.Rfe1 Nf3+ 22.Kf1 Nxg5 22.Qg3 (22.Qh4 Bg2+ 23.Kg1 Nf3+ 24.Kxg2 Nxh4+ and mate in two) 22... Nge4 wins a piece at least. E) 21.exd4 Nf3+ as in A. |
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Jan-13-18
| | gofer: Okay, I am little bit confused, as everyone is saying, <20 ... d4> is absolutely
obvious and so is <21 f3> as its the only way to stop <21 ... Nf3+> without
dropping more material, but I have no idea why black played <21 ... dxc3> it
doesn't look as strong as playing <21 ... Nxf3+> immediately. The point being
that the king doesn't have an escape square, even though it looks like he
does...
<20 ... d4>
<21 f3 Nf3+>
22 Kf2 Ne4+!
click for larger view23 Kg2 Nxc3! -+
23 Kxf3 Nxg5++ -+
So, 22 Kf2 isn't playable. That just leaves Rxf3! <22 Rxf3 Bxf3>
click for larger viewAt this point, white's world seems to crumble apart... 23 gxf6? Bxe2
24 Nxe2 Rxe3! -+
23 exd4 Bxe2
24 Nxe2 Rxe2 (Re1? Nh5! -+)
25 d5 Nh5 -+
<So what have I missed!??!?> |
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| Jan-13-18 | | groog: Like yesterday I got the first move. Unlike yesterday I hadn't a clue what black was on about. |
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Jan-13-18
| | Whitehat1963: Enormously complicated exchanges! |
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| Jan-13-18 | | scholes: Cg sf line after 21 ..nxf3
-3.32 (22 ply) 22.Rxf3 Bxf3 23.gxf6 Bxe2 24.Nxe2 Rxe3 25.Qf1 dxc3 26.Nxc3 Rf3 27.Qg2 Rxf6 28.Qxa8 Rxa8 29.Nd5 Rd6 30.Bc4 Rad8 31.Nf6+ Kh8 32.Rxd6 Bxd6 33.Ng4 Kg7 34.Nf2 a5 You can request cg sf analysis on own analysis too. |
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| Jan-13-18 | | Honey Blend: Although it looks like a swindle, after 37. ♘xg6+ ♔xg6 38. ♗f7+ ♔g5 39. ♗xe8 ♘xe3, things still looks hopeless. ...c3 will soon follow.
click for larger viewI'd think a bit better may be 37. ♘d3+ followed by ♘xb2. |
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Jan-13-18
 | | morfishine: Complex and fascinating game
I quickly settled on <20...d4> but certainly didn't grind forward 17 more moves ***** |
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Jan-13-18
| | Grandma Sturleigh: <gofer> Stockfish likes 21...Nxf3+ (which I also chose) but it likes 21...dxc3 better. One reason is Stockfish rates 24...Rxe3! as even stronger than Navara's 24...cxb2. 
click for larger viewOne line is 25. Kxe3 Bc5+ 26. Nd4 Qe8+ 27. Ne6 Ng5 
click for larger viewWhite is clearly not going to last much longer. |
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Jan-13-18
 | | malt: Gone for <20...d4> 21.f3
(21.ed4 or 21.B:d4 Nf3+)
21...N:f3+ 22.R:f3 B:f3
21...dc3 22.bc3 (22.gf6 cb2 23.e4 c4)
22...Nh5 |
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Jan-13-18
| | patzer2: <diagonalley: ok, but even if you get the first move, the continuation/s seem damn near impenetrable. <diagonalley>: nul points :-(> The best play game continuation 21...dxc3 -+ (-6.17 @ 32 ply, Stockfish 8) is a line I also found difficult. Much easier for me to visualize after 20...d4! 21. f3 was <gofer>'s alternative win 21...Nxf3+ -+ (-3.97 @ 33 ply, Stockfish 8). P.S.: Years ago, a Master friend of mind gave me some good advice: "If you don't see it, don't play it." A corollary is play the win you see, not the promising one you don't see. |
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| Jan-13-18 | | saturn2: 20..d4 threatening Nf3+ seen |
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| Jan-13-18 | | transpose: Seems to me 20 ..d4 has to win, and I saw f3 as the best defense for white but after Nxf3+ i assessed the position as winning for black. As others point out, that isn't the best move, and the variations are numerous to see. I guess that is why this puzzle is rated very difficult. |
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Jan-13-18
 | | chrisowen: Bucks vim winds bin d4s dours vis f3s fount to it a 21.Bxd4 hound duddy vis 2 it low eve luv von guv c3s crock vow vim f6s fluffus vis to it 22.bxc3 hoh crock vow 3 4 it low eve luv von guv c4s count vim vis to it 22cxb2 c cob bub 4 it low eve luv von guv u c2s cub vis to it liv 23Nxf3+ cvs flump 4 it low eve luv von guv vis to it live 24.Rxf3 v iffys flump 3 conts ousts vow vis to it five 24.Kf2 v iffyus off vis 5 6 ousts vow won vivas bucks krupp von guv bop i pet vet get bet got vis gov pin togsy vis wis marquis furry u flays vis fin lad lands dinner vents joshed it's vasts vivas flavs frees vests hip yet cad bow it's vasts vivas vis pay hit decks bow dints vis web diptych flavs why vow cab dew vim pithy hints batch dew yip bad chewy tip d4 dours vis bucks krupp von guv crock vow cub bop i pet vet bet tvs gov i got pin vis gos wis wos vis wig quagmire vow mofty furry lay u flays virulent lad lud duals it low eve luv von guv nad dan lands vis dinner vents joshed it's vasts vivas flavs frees vests hip yet cad bow vis cor 20d4 21.f3 hud fount vis cob crock vow luv cod doc coffs cog cojoin vim colds com conts con vet croque monsieur vow vints luv cor rocks costs count court ggs couth coves cow coy cox i vim vivas d4s dubus ducks duddy doffs tho d4s duffs docks dulls dolls nod vide dunks donks druid von guv donts nuddy noddy found dud hod 20.g5 hound gourds 2 it low eve luv von guv hod 20.Bxe5 hound egger 1 conts ousts vow vivas doddle fuddy vides duddy fog fun gusts guv nub guffs folds doffs dog god dug gourd vis to it a 21.Bxd4 hound duddy vis 2 it low eve luv von guv vis to it a 21dxc3 22.gxf6 huh off fluffus vis to it 22.bxc3 hoh crock vow 3 4 it low eve luv von guv vis to it 22c4 off crowd vow vis to it 22cxb2 c cob bub 4 it low eve luv von guv vis to it civ 23.Bc2 Nxf3+ v codes flump 4 it low eve luv von guv vis to it five 24.Kf2 v iffyus off vis 5 6 ousts vow won vis to it livs 24.Rxf3 v iffyus flump 3 conts ousts vow dines dunks donts nod vides nuddy cosys vis clubs o eires elles wound pound hound bug vet bouts vivas bunts tub tubby trouble von guv vow hod flush doffs duffs folds counts bucks effigy vis it cob luv crown cub clubs bus vow bolds ums dos egs v ifs his dub luv bucks vim bin d4s dours: |
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| Jan-13-18 | | karik: I went for Kg7 gxf6+ Nf3+ Qxf3 obviously black winning, but there must something wrong... |
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