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| Jan-11-18 | | Cheapo by the Dozen: Lots of moves look good but are barely defended. Most deflection tries fail, but Rd7 works. |
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| Jan-11-18 | | DarthStapler: I got the first move and the general idea |
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| Jan-11-18 | | ChessHigherCat: Great puzzle, everything's hanging from a thread like in a Topalov game. After toying around with Nh6+ and Rd8, I finally found Rd7 but I anticipated : 24...g6 25 Ne7+ Bxe7 26. Qe6+ Kh8 27. Qxe7 threatening Qxh7#. Now, I see that if black plays 26...Rf7 instead, white only wins the piece back with 27. Rxe7 Qxe6 28. Rxe6. |
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| Jan-11-18 | | stst: Only two viable moves, Rd7 or Nh6+.
The Black Q cannot take R, else Nh6+ and it will go.
If Nh6+ first, then Kh8,
25.Rd7 gxN
26.Qf5 Ng7
27.Bxf6 leaves no good move for Black either. |
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| Jan-11-18 | | patzer2: For today's Thursday (24. ?) puzzle, 24. Rd7! with the threat 24...Qxd7 25. Nh6+ Kh8 26. Qxd7 +- is a fairly obvious first move. However, after 24...g6 I went into survival mode protecting material with 25. Nh6+ Kg8 26. Qe6 +- (+13.50 @ 31 ply, Stockfish 8). I figured it was winning, but until I checked it on the computer I had no idea 25. Nh6+ was the strongest reply to 24...g6. I was also surprised to see 24...Qxd7 25. Nh6+ Kh8 26. Qxd7 +- (+5.61 @ 31 ply, Stockfish 8) is Black's strongest defense to 24. Rd7! P.S.: For a Black improvement, I'd start with the opening and ditch 10...dxc4 11. bxc4 ⩲ (+0.56 @ 28 ply, Stockfish 8) in favor of 10...Qc7 = (+0.13 @ 28 ply, Stockfish 8) as in the draw in Bu Xiangzhi vs Minghui Xu, 2017. |
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| Jan-11-18 | | Toribio3: Wow! Beautiful penetration by white pieces against black's king side. |
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| Jan-11-18 | | Afroim: Second white's move could be 25.Nh6+ and then 26.Qe6 |
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| Jan-11-18 | | agb2002: The material is identical.
The first idea that comes to mind is 24.Rd7, to increase the pressure on g7: A) 24... Qxd7 25.Nh6+ Kh8 26.Qxd7 gxh6 27.Rd1 + - [Q vs r+n]. B) 24... g5 25.Qxg5+ (25.Nh6+ is probably better, as in C) 25... Kh8 (25... fxg5 26.Nh6#) 26.Rfd1 followed by Qh6 looks winning (26... Bd4 27.Bxd4 Qxd7 28.Bxf6+ wins decisive material). C) 24... g6 25.Nh6+ Kh8 26.Qe6
C.1) 26... Nc7 27.Bxf6+ Rxf6 28.Qxf6#.
C.2) 26... Ng7 27.Qg8+ Rxg8 28.Nf7#.
C.3) 26... Qb8 27.Nf7+ Kg8 28.Nd6+ Kh8 29.Nxe8 Qxe8 30.Bxf6+ Rxf6 31.Qxf6+ Kg8 32.Qg7#. |
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| Jan-11-18 | | AlicesKnight: Rd7 looks the key move. |
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Jan-11-18
 | | Check It Out: I did not find 24.Rd7, spending my time mainly with Nh6+ and the occasional fantasy of a smothered mate. I found this combination very pretty. Isn’t this the kid who crushed Carlsen? |
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| Jan-11-18 | | scholes: Same tactic happened in my blitz game yesterday. I spotted the tactic after I missed it. |
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| Jan-11-18 | | malt: After a while, another piece was needed
<24.Rd7> g6
(24...Rf7 25.Nh6+ Kh8 26.N:f7+ Kg8 Rfd1 )
25.Nh6+ Kh8 26.Qe6
25.Qh3 h5 26.Rfd1 |
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| Jan-11-18 | | mel gibson: I didn't see it but it looks so obvious once you are shown. Stockfish 8 says:
24. Rd7 (24. Rd7 (♖d1-d7)
+6.58/42 308
score for white +6.58.
Stockfish says Black must take the Rook with the Queen: (24. .. Qxd7 (♕c8xd7
♘f5-h6+ ♔g8-h8 ♕g4xd7 ♘e8-d6 ♘h6-f5 ♘d6xf5 ♕d7xf5 ♖f8-d8 ♕f5-c2 ♖d8-e8
♖f1-d1 ♖e8-e7 e2-e3 ♔h8-g8 ♕c2-c4+ ♔g8-f8 ♕c4-h4 ♔f8-g8 ♕h4-g4 ♖a8-f8
♕g4-c4+ ♔g8-h8 ♔g1-g2 h7-h6 ♕c4-g4 ♖f8-e8 ♖d1-d7 a7-a5 ♕g4-g6 ♖e8-f8 ♖d7xe7
♗c5xe7 ♕g6-f5 ♗e7-c5 ♕f5-e6 ♖f8-g8 ♕e6-d7 ♖g8-b8 ♕d7-c7 ♖b8-f8 ♕c7-d7
♔h8-h7 ♕d7-d3+ ♔h7-h8 ♕d3-f5) -6.79/35 11))
Black loses his Queen.
score for Black -6.79 depth 35.
However with Black playing 25...Kh8
Stockfish 8 says
25. Rfd1 Kh8 26. Qh4
(26. Qh4 (♕g4-h4 ♘e8-g7 ♖d7xg7 h7-h5 ♕h4-g5 ♗c5xf2+ ♔g1-f1 ♕c8-c1 ♖g7-g8+
♖f8xg8 ♕g5xf6+ ♔h8-h7 ♕f6-f7+ ♖g8-g7 ♕f7xg7+) +M8/49 13) mate in 8. |
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| Jan-11-18 | | morfishine: The preparatory and impudent move <24.Rd7> embarrasses Black ***** |
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| Jan-11-18 | | saturn2: I found 24 Rd7 but it was not <The first idea that comes to mind> |
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| Jan-11-18 | | thegoodanarchist: I found 24.Rd7 fairly quickly with my chess intuition. But I didn't analyze it too closely. Instead, I quickly jumped to the actual game to see if I was right or wrong. |
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| Jan-11-18 | | Mayankk: I was in the ‘looking for smothered mate using some nh6+ idea’ camp as well. Sometimes knowing tactical ideas blinds you to other possibilities as you just keep focusing on that one theme which unfortunately doesn’t quite work in most cases. |
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| Jan-11-18 | | patzer2: After the alternative winning line 25. Nh6+ Kg8 26. Qe6 +- (diagram below)
click for larger viewIf 26...Ng7, White has a pretty smothered mate with 27. Qg8+ Rxg8 28. Nf7# (diagram below) 
click for larger view |
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| Jan-11-18 | | njchess: 24. ♕c4+, ♘e7+, ♘h6+, ♗xf6 all lead nowhere. That pretty much left ♖d7 as the only move to further the attack. 24. ♖d7 ♕xd7 25. ♘h6+ ♔h8 26. ♕xd7 ♙xh6 +- or 24. ♖d7 g6 25. ♖f1d1 +- Either way, the game is essentially over. |
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| Jan-11-18 | | gofer: <24 Rd7 ...>
24 ... g6
25 Rfd1 Kh1
26 Qh4 h5
27 Qg5 mating
<24 ... Qxd7>
<25 Nh6+ Kh8>
<26 Qxd7 gxh6>
click for larger viewWhite is winning, but how does white win quickly!? ~~~
Okay, I got the line actually played and also saw that it wasn't the best
choice for black - so definitely a point, but I am still wondering how
well I would convert the advantage after <24 ... Qxd7>... Stockfish gives the following two choices at <25 ?> 1) +5.33 (30 ply) 1.Rd1 Ng7 2.Qb7 Rab8 3.Qxa7 Ra8 4.Qb7 Rab8 5.Qc7 Rbc8 6.Qf4 Rf7 7.Qxh6 Rcf8 8.Qf4 Re8 9.e3 Kg8 10.Qc4 Ne6 11.Qg4+ Kh8 12.Qf5 Ng7 13.Qd5 Rff8 14.Qc4 Re7 15.Kg2 Ne6 16.Qh4 Ng7 17.Qf4 Ref7 18.Qc4 2) +4.68 (29 ply) 1.e3 Ng7 2.Rd1 a5 3.Qc7 Rac8 4.Qf4 Rf7 5.Qxh6 Rcf8 6.Qf4 Re7 7.Kg2 Kg8 8.h4 f5 9.Qg5 Ref7 10.Rd8 a4 11.Bxg7 Rxg7 12.Rxf8+ Kxf8 13.Qxf5+ Rf7 14.Qc8+ Ke7 15.Qb7+ Kf6 16.Qf3+ Ke7 17.Qe4+ Kd6 18.Qxa4 Re7 19.Qc4 Kd7 20.Qd5+ Kc7 21.h5 Bd6 22.Qc4+ Kd8 |
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| Jan-11-18 | | BOSTER: <Check it Out:fantasy of a smothered mate>.
If white could play two moves Qc4+ & Nh6+ simultaneously, you'd have got it. |
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| Jan-11-18 | | Strelets: A good kingside attack is like picking a lock. You've got to find the balance between finesse and force. 24.Rd7! does that perfectly. |
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Jan-11-18
| | Check It Out: <Boster> I’m lobbying FIDE for a rule change as we speak. If that Inarkiev guy can play check while in check, then I should be able to play two checks in a row while not in check! |
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| Jan-11-18 | | Walter Glattke: symmetry Play 24.-h5, White lose, and the Computer sellers, too. |
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| Jan-11-18 | | messachess: Nice puzzle. |
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