| Jul-24-15 | | devere: 24. Nd6+ Kf8 25. e6 Nxe6 26. Rxe6 cxd6 27. h4! and Black has no good defense to g4 trapping his Queen.
click for larger view |
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Jul-24-15
 | | al wazir: It isn't clear how white wins after 25...Kf8. But I didn't get that far; I fell for the "obvious" 24. Nf6+. |
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| Jul-24-15 | | jvv: 25...Kf8 26.d7 |
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| Jul-24-15 | | diagonalley: <al wazir> .... (predictably) me too!! |
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| Jul-24-15 | | leow: i also though it was Nf6 still think it works, Whats wrong with it? |
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| Jul-24-15 | | Cheapo by the Dozen: If White goes with 24 Nf6+ gxf6 25 Qxf6, Black has three main choices: A. Run for the queenside with 25 ... Kd7. I forgot to check that one. B. Give up the two rooks and rely on counterplay. I think that doesn't work. C. Castle short and let White try Re3/Rg3. I think that doesn't work either. |
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| Jul-24-15 | | Nagibator97: Can someone tell me, why not 25. Nd6+ Kd7 ?
i don't see any good moves for whites in this case :( |
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| Jul-24-15 | | wooden nickel: Since material is equal and Black hasn't castled... he must have forgotten, <castle early and often!>, the plan looks clear to hinder that. The field f6 looks attracting but turns out to be a flop, although, strange enough, White could move 3 different pieces to that field without even necessarily losing!
Time to try the other side of the half open e-file with a knight sac 24.Nd6!+ and see there, it works!
<Nagibator97: Can someone tell me, why not 25. Nd6+ Kd7 ?>
... on 24.Nd6+ Kd7, White already achieves his goal by playing 25.Nc4 and Black's king will soon be under attack. |
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| Jul-24-15 | | morfishine: I had <24.Nd6+> and was able to see that
24...cxd6 25.exd6+ Kf8 26.Qe4 and White wins. I could see that Black had Ne2+ at some time, but for some reason, not 25...Ne2+ |
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Jul-24-15
 | | Penguincw: Just when I finally thought Friday puzzles were returning to normal (as in obvious first move), I thought 24.Nf6+ gxf6 25.exf6+ like many others here. |
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| Jul-24-15 | | saturn2: @leow: Can someone tell me, why not 25. Nd6+ Kd7 ?
I guess you mean this in the 24th move instead of the 25th.
In this case the king can be kept in the middle and after Rd1 it soon gets uncomfortable for him and for the Knight on d4. I did not get the solution of the puzzle (if there is any) and went for 24 Nf6, 25 Qf6 playing Rd1 at some point and chasing around the black king. However there is a myriad of possibilities. IMHO instead of the unnecessary loss of tempo 23: Qh5 black should have castelled. The queen was indirectly covered and white would have lost the exchange after 23..O-O, 24 RxQe2 KxRe2, and 25...KxQf4 26 BxNf4 |
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| Jul-24-15 | | JimNorCal: I was attracted to Nd6+ right away, but overlooked that Ne2 was check and came up with different followup moves. What a glorious attack! |
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| Jul-24-15 | | kevin86: I had the first move, but I tried a different approach. |
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| Jul-24-15 | | BOSTER: 13 comments only.
Bingo! |
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| Jul-24-15 | | agb2002: The material is identical.
Black threatens 24... Ne2+ and 24... Nc2.
The position of the black queen and king suggests 24.Nf6+ gxf6 25.exf6+ (25.Qxf6 O-O followed by Qg6) but after 25... Ne6 26.Qa4+ (26.Rxe6+ fxe6 27.Qe4 O-O 28.Qxe6+ Qf7 - +) 26... Kf8 White probably doesn't have enough compensation. Another option is 24.e6, trying to expose the black king. However, after 24... fxe6 it is not clear what to do next. Instead of 24.Nf6+, White can try 24.Nd6+:
A) 24... cxd6 25.exd6+
A.1) 25... Ne6 26.Qa4+ Kf8 27.Be7+ Kg8 28.Qc6 looks very good. For example, 28... Rb8 29.d7 with several threats (30.Rxe6 fxe6 31.Qxb6, 30.Rxa6, etc.). A.2) 25... Kf8 26.Qe4 with the double threat 27.Qe7+ Kg8 28.Qe8+ and 27.Qxa8+ looks winning. A.3) 25... Kd7 26.Re7+ Kc6 (26... Kc8 27.Qe4 wins; 26... Kd8 27.Ra7+ wins) 27.Rc1+ and White seems to have a winning attack. B) 24... Kd7 25.Nxf7 wins an important pawn. For example, 25... Rhf8 26.Rad1 Qxf7 27.Qxf7 Rxf7 28.e6+ wins the exchange. C) 24... Kf8 25.Nf5 looks good for White. For example, 25... Nxf5 26.g4 Qg6 (26... Qh3 27.Ra3 wins the queen) 27.gxf5 followed by 28.f6 with a very strong attack. |
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| Jul-24-15 | | M.Hassan: "Difficult"
White to play 24.? and equal in forces.
24.Bf6 <hoping for ...gxf6
25.Nf6+ and it's a Royal Fork>
24.........0-0
25.Bxg7 Kxg7
And Whit's attack will be stopped in here. I then thought to go for:
25.Be7 Re8
26.Qg8 <if...Rxe7 27.Nf6 Royal Fork>
If26......Qg6, no progress can be made by White.
I then turned attention to d6 square:
24.Nd6+ cxd6
25.exd6+disc. Ne2+
26.Rxe2 Qxe2
27.d7+! Kxd7
28.Qxf7+ Kc8
29.Rc1+ Kb8
30.Bf4+ Bc7
31.Qxc7#
If I had seen 24.Nd6+ at first, I would not call this puzzle as "difficult" since moves almost dictate themselves. |
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| Jul-24-15 | | M.Hassan: <Nagibator97:Can someone tell me, why not 25. Nd6+ Kd7 ?
i don't see any good moves for whites in this case :(> I did couple of moves and Chessmaster completed it as below: 25.Nd6 Kd7
26.Nxf7 Rhf8
27.e6+ Nxe6
28.Qe4 Bxf2+
29.Kh1 Qxf7
30.Qd5+ Kc8
31.Qxa8+ Kd7
32.Qd5+ Kc8
33.Rxe6 Kb8
34.Qb3+ Kc8
35.Qc4
White is ahead by a Rook for a pawn |
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Jul-24-15
| | al wazir: <agb2002: 25...Kf8 26. Qe4> Nf3+ 27. gxf3 (27. Qxf3 Qxf3) Qxg5+ 28. Kh1 Qd8. |
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| Jul-24-15 | | mel gibson: I wouldn't have seen this one as the King/Queen fork looked the most promising. |
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| Jul-24-15 | | Rookiepawn: 
click for larger viewI thought about 25. g4 here, but ...Qxg5 is a crushing answer. 25. Qe4 doesn't work because of ...0-0.. No way to prevent the BN jump. |
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| Jul-25-15 | | patzer2: Here's my look at the game and the Friday (24. ?) puzzle with the chessgames.com Opening Explorer (OE) and Deep Fritz 14x64: <1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Nc5 10. c3 d4> This is the second most popular move here. Most often played is 10... Be7 as in Caruana vs Nakamura, 2014. <11. Bxe6 Nxe6 12. cxd4 Ncxd4 13. a4 Bc5 14. Ne4 Bb6 15. Nfg5 Qd7> This is apparently where theory in practice ends as this is the only game after 15. Nfg5 with 15...Qd7 in the OE. Black can improve with 15... Qd5! when play might continue 16. axb5 (16. Nxe6 Qxe6 =) 16... Nxg5 17. Nxg5 Qxb5 18. Be3 Ne2+ 19. Kh1 Rd8 20. Qa4 Qxa4 21. Rxa4 Bxe3 22. fxe3 O-O 23. Rxa6 h6 24. Nf3 Rb8 25. Rc6 Rxb2 26. Rxc7 Rb3 27. Nd4 Rxe3 28. Nc6 Nc3 29. Ne7+ Kh7 30. Nf5 Rd3 31. Nd6 = (0.00 @ 23 depth, Deep Fritz 14 x 64). <16. axb5 Qxb5 17. Qh5 Nxg5 18. Bxg5 Qe2?!> This is a not so obvious inaccuracy which allows White to take the initiative. Safer here for Black is 18... Ne6 when Fritz indicates play might continue 19. Qf3 Nxg5 20. Nxg5 O-O 21. Qe4 f5 22. Qc2 Rae8 23. Rae1 h6 24. Nf3 Re6 = (+0.16 @ 22 depth, Deep Fritz 14). <19. Qh4! Nf5 20. Qf4! Nd4 21. Qh4 Nf5 22. Qf4 Nd4 23. Rfe1 Qh5?> This is the decisive error. Black's last practical chance to fight for a draw is 23... Qb5 when Fritz indicates play might continue 24.
Qh4! h6 25. Rad1! Ba5 26. Nf6+! gxf6 27. exf6+! Bxe1 28. Qe4+! Kf8 29. Qxa8+ Qe8 30. Qxe8+ Kxe8 31. Rxe1+! Kd8 32. Bf4 Ne6 33. Be3  to 
(+1.73 @ 23 depth, Deep Fritz 14x64).
<24. Nd6+!!> This solves yesterday's Friday puzzle. My failed attempt at a solution was 24. Nf6+? which backfires and leaves black with the advantage after 24... gxf6 25. Qxf6 O-O 26. Bh6 Qg6 27. Bxf8 Qxf6 28. exf6 Kxf8  (-0.53 @ 23 depth). <24... cxd6> If 24... Kd7 White
wins after 25. Nc4 when Fritz indicates play might continue 25...Ba7 26. Rad1 Ke6 27. Rxd4 Bxd4 28. Nd6 cxd6 29. exd6+ Kd7 30. Re7+ Kc6 31. Qe4+ Kb5 32. Rb7+ Kc4 33. Rc7+ Kb5 34. Qd5+ Ka4 35. Qc4+ Ka5 36. Bd2+ Bc3 37. Bxc3+ Kb6 38. Qc6#. <25. exd6+ Ne2+ 26. Rxe2+ Qxe2 27. d7+ Kxd7> If 27... Kf8 White wins after 28. Qd6+ Kg8 29. Qxb6 h6 30. d8=Q+ . <28. Qxf7+ Kc6 29. Rc1+ Bc5 30. Be3 Kb5 31. Qb7+ 1-0> Black resigns as it's mate-in-two after 31...Ka5 (31... Bb6 32. Qxb6+ Ka4 33. Ra1#) 32. Ra1+ Ba3
33. Rxa3#. |
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| Jul-25-15 | | saturn2: @patzer My failed attempt at a solution was 24. Nf6+? which backfires and leaves black with the advantage after 24... gxf6 25. Qxf6 O-O 26. Bh6 Qg6 27. Bxf8 Qxf6 As Cheapo by the Dozen pointed out white should be able to launch an attack on the castled king by bringing one of the rocks either via a3 or e3 to g3. White has to avoid the Queenexchange of course:
Here is a possible continutation:
24 Nf6+ gxf6 25 Qxf6 O-O 26 Bf6 Qg6 27 Qh4 Rd8 28 Rg3 |
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| Jul-25-15 | | patzer2: <Saturn2> After 24...Nf6+ gxf6 25. Qxf6 O-O 26. Bh6 (26. Bf6 is impossible) 26...Qg6 27. Qh4 Nf3+  (-25.32 @ 20 depth, Deep Fritz 14) White drops the Queen and is clearly lost. |
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Kibitzing
sac: 25.exd6+