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| Aug-19-15 | | patzer2: An interesting position occurs after 22...Nxe4 23. Kb2 (diagram below)
click for larger viewHere 23...f6?! (attempting to trap the Bishop) allows White to put up too much resistance after 24. Rd4 Qxc3+ 25. Qxc3 Rxc3 26. Bxe4  (-0.80 @ 24 depth, Deep Fritz 14). Instead, Black (diagram position) wins strongest with 23...Nxc3! 24. Rd4 (24. Rc3 Na4+  ) 24...Qb5! (-3.01 @ 21 depth, Deep Fritz 14). |
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| Aug-19-15 | | diagonalley: hmmmmm... as with several others i went for 22 ....NxP - in fact, as it was the "immediate candidate" i looked at that first of all... realised it gained two pawns but then spent another 15-odd minutes in a fruitless search for something significantly better... maybe worth half a point(?!) |
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| Aug-19-15 | | Robespierre: <...I do have to wonder what would happen after 23.Bxe4. Perhaps some of the better puzzle solvers can explain for me.> Hi, Penguincw! I'm FAR from being one of the better solvers (I call myself an advanced beginner), but I can tell you that 23. Bxe4 would likely be followed by 23. ...Nxe4 -- which places the played knight in position to take the white pawn on c3. If 24. Qxe4 that will be followed by 24. ... Qxe4, and Black will have a huge material advantage. There are likely some other more clever chaps who can add to this analysis. |
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| Aug-19-15 | | agb2002: The material is identical.
Black should take into account an eventual Na5.
The pawns on c3 and e4 are hanging and the bishop on g5 has very limited mobility. These details invite to play 22... Nxe4: A) 23.Bxe4 Bxe4
A.1) 24.Rd4 Qxb3+ 25.Ka1 (25.Kc1 Qxc2#) 25... Bxc2 26.Qc1 Qxc3+ wins a knight and three pawns at least. A.2) 24.Kb2 f6 traps the bishop.
A.3) 24.Nd2 Qb5+ 25.Kc1 (else 25... Bxc2 wins two pawns at least, f6 would be met with Qxe6+) 25... Bf5 26.h5 Qa4 27.Nb3 (27.Ne4 B(Q)xe4) 27... Bxc2 28.Kxc2 Qa2+ followed by Qxb3 wins two pawns at least (the pawn on h5 is also in danger). B) 23.Rd4 Nxc3+ 24.Kb2 Qb5 wins two pawns at least.
C) 23.Kb2 Nxc3
C.1) 24.Bxb7 Nxd1+ 25.Rxd1 Qxc2+ 26.Ka3 d5+ looks crushing. C.2) 24.Rd4 transposes to B.
D) 23.Rd3 Nxc3+ 24.Rxc3 (24.Kb2 Na4+ 25.Kb1 Bxf3 26.Qxf3 f6 wins the other bishop) 24... Qxc3 25.Qxc3 Rxc3 26.Bxb7 f6 27.Bxf6 gxf6 28.Bxa6 Rxh5 - + [R+P vs N]. The alternative 22... Bxe4 looks also winning but I'd play 22... Nxe4. |
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| Aug-19-15 | | cocker: Strange puzzle; 22 ... Bxe4 and 22 ... Nxe4 both look natural and both win. FRITZ prefers the latter. |
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| Aug-19-15 | | Abdel Irada: <I do have to wonder what would happen after 23.Bxe4. Perhaps some of the better puzzle solvers can explain for me.> Would a rusty puzzle-solver do?
Black seems to have two alternatives: One is 23. ...Nxe4 with a complex position. The other is the more forcing 23. ...Qxe4, when White must either exchange into a bad ending or lose time retreating the queen, after which Black continues to put pressure on c3 and White can no longer prevent ...d5. In both cases, the White bishop on g5 is misplaced and will require further loss of time to extricate it. ∞ |
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| Aug-19-15 | | morfishine: I like <22...Nxe4> Black's position looks very strong after 23.Bxe4 Bxe4 with threats against <c3>, <b3> & 24...d5 looming ***** |
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Aug-19-15
 | | Willber G: I got Bxe4, but I don't understand black's reply. Not much of a puzzle IMO. |
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| Aug-19-15 | | wooden nickel: I enjoyed 20.Qe3? Sa2! ... 22... Qxc3 gains a pawn but the real winner is deciding between 2 attractive moves:
22... Nxe4 vs Bxe4
<Suppose two similar dates in front of a man, who has a strong desire for them but who is unable to take them both. Surely he will take one of them, through a quality in him, the nature of which is to differentiate between two similar things. -Abu Hamid al-Ghazali> |
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| Aug-19-15 | | Lambda: What a strange puzzle. The answer is to play any of the obvious moves. |
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Aug-19-15
 | | Sally Simpson: Black to play and one check (QxN+) that leads nowhere. Looked at 22...Nxe4 and could find nothing better. It's looks OK and from now looking at the above posts it's a 'horses for courses' position. It's a 'bread and butter' puzzle. You will not get a 'super-duper' combo in every game. It's often the 'nitty-gritty' moves you need to find. and...er....run of doubles clichés.
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Obviously the chappie who picks these things has got it wrong. It's White to play.
click for larger view Now it's a proper puzzle.
22. e5 Bxf3 23. exd6 Bxd1 24. Rxd1 Nd5 25. Kb2 Nxe3 26. d7 mate. 
click for larger view |
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| Aug-19-15 | | zb2cr: 22. ... Bze4 wins a Pawn and, because of the pin on White's c2 Pawn, threatens the White Knight at b3. 23. Bxe4, Nxe4 and White's c3 Pawn falls. |
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| Aug-19-15 | | mikrohaus: So, the game went 22...Bxe4 (the solution?!?), but all of us and our engines prefer 22...Nxe4. But both win quickly; so, it's sort of like a dual solution in a composition, which the composer overlooked. Give yourself full credit for either, in my opinion. |
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| Aug-19-15 | | mel gibson: White made a blunder.
The next move for white is
23 Kb2
according to DR4 64 bit depth 18 score -2.55
Whites actual move
23 Bxf6 leads to mate in 4. |
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| Aug-19-15 | | saturn2: I went for the (weaker?) game solution Bxe4, crosspinning the white c pawn and winning the e pawn. After white exchanges on e4 I considered it more convenient to have the knight on e4 than the bishop because the knight near the king might cause more trouble. At least the c3 pawn will also fall soon. |
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| Aug-19-15 | | BOSTER: < Penguincw: The difficulty of CG puzzles escaletes quickly>.
According to audience's reaction the opposite is true. |
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| Aug-19-15 | | Chess Dad: I feel better now. I didn't see anything spectacular, thought Nxe4 was a pretty good move, but had no real idea how to progress to mate. But I wasn't alone. |
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| Aug-19-15 | | starry2013: I think it's knight or bishop xe4, I can't find good ways to really progress that much though. I did better with knight taking. |
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| Aug-19-15 | | kevin86: White is faced with a dilemma: if he takes the bishop, the knight will recapture and attack strongly. If he takes the knight, the bishop's pin allows the queen to come in even quicker. |
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| Aug-19-15 | | beenthere240: Black to play and white to blunder. |
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| Aug-19-15 | | starry2013: One thing I was looking at was trapping that bishop on g5 with f6. |
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| Aug-19-15 | | Pedro Fernandez: Well, as often our friend <Peguin> says, this game was lost for white since long. Even so my guess move was 22...Nxe4 which, in my opinion, is stronger than 22...Bxe4 (which also wins, of course), but 23.Bxf6?? was horrible! with an easy mate. |
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| Aug-19-15 | | kayakerg: 23 K b2 extends the game |
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| Aug-19-15 | | CHESSTTCAMPS: Material is even, but white's castled king is badly weakened by the doubled pawns, while black's uncastled king is remarkably well-protected by a mobile pawn chain. Black is in position to grab a pawn, while trapping a bishop, and attacking the white king at the same time. 22... Nxe4! threatening both Nxc3+ and f6.
A. 23.Bxe4 Bxe4 24.Nd2 (Rd4? Qxb3+) Qb5+ 25.Kc1 Bf5 26.h5 (otherwise f6 traps bishop) d5 27.Nb1 (h6? Ba3#) Rxa5 and black is two pawns up with complete control. B. 23.f5 Nxc3+ followed by Nxd1 is winning.
C. 23.Rd4 Qxc3 24.Qxc3 Nxc3+ followed by 25... Bxf3 wins. C.1 24.Qe2 d5 25.f5 (Bxd4 Ba3 forces mate) Nxg5 26.Rxg5 (or other recapture) Ba3 forces mate. C.2 24.Rge1 Qxe3 25.Rxe3 f6 wins a piece.
D. 23.Kb2 Nxc3! 24.Bxb7 Na4+ 25.Ka3 d5+ forces mate.
E. 23.other f6 or d5 followed by Nxc3 is decisive.
Time for review.... |
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| Aug-19-15 | | CHESSTTCAMPS: Hmm - patzer2's post shows that my D line has some complexity I missed. |
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