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Later Kibitzing> |
| Mar-05-16 | | diagonalley: 40.NxP+ is screaming out to be played... (it unleashes so much firepower on the black king that it hardly requires a second thought) |
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| Mar-05-16 | | Boomie: <gofer: The start is simple. But what about the refusal?> White can play 40...Kxf7 41. dxc5 and the threat of Bb3 cannot be met. For example, 41...Bxc5+ 42. Kh1 gxh5 43. Qxh5+  |
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| Mar-05-16 | | morfishine: <40.Nxh5> I forgot I've seen this: 40...gxh5 41.Qxh5 f5 42.Qxf5 |
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| Mar-05-16 | | devere: It seems obvious that 40.Nxh5+ will turn the Black position into confetti, and after the virtually forced 41...f5 White has 3 pawns for the piece and a raging attack. This isn't much of a problem. |
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| Mar-05-16 | | dfcx: White can win some pawns quickly with
40.Nxh5+
If black takes the knight
40...gxh5 41.Qxh5 f5 (or Rg4+ would be fatal) 42.Qxf5 Kh8 43.Qh5+ Nh7 44.Re6 followed by Qe5+ wins Refusing the knight might be better. There are just too many variations, but white has already won a pawn. |
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| Mar-05-16 | | patzer2: Found 40. Nxh5+ almost at blitz speed this Saturday morning. Don't have time now to look at with Fritz 15, but I'm sure I'll see some finesse I missed when I plug it into the computer tomorrow. |
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| Mar-05-16 | | alfiere nero: I'm just a beginner, but isn't 43. Rg4+ a stronger move? |
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| Mar-05-16 | | alfiere nero: I mean 43 Rg4+, and if ... Kh6, then 44 Rg6+
(If ... Kh8, then 44 Qh5+) |
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| Mar-05-16 | | Once: <alfiere nero: I'm just a beginner, but isn't 43. Rg4+ a stronger move?> Fritzie says that 43. Rg4+ is okay, but 43. Qh5 is stronger. The drawback of Rg4+ is that it kicks the black king to h8 where he has the chance to hide behind a later Rh7. By playing Qh5 first, white denies Black the chance to run his king into the corner. After 43. Qh5 Black can still play Kg8 and Rg7, as in the game, but then his king is on a white square. This leaves him vulnerable to a Bb3+ (after 45. dxc5). Black is quite strong on the dark squares, so white plays to keep the black square on a light square. Cunning, eh? 43. Rg4+ still ought to win, but Qh5 is more precise. Interestingly, Fritzie also quite likes 43. g3 which is its second favourite move: 43. Qh5 (+6.73)
43. g3 (+4.12)
43. Rg4+ (+3.17) |
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| Mar-05-16 | | alfiere nero: I see .....
thanks! |
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| Mar-05-16 | | kevin86: White gives up a knight for three pawns and opens black's king position like a can opener. |
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| Mar-05-16 | | morfishine: <Once> On your comment: <...Black is quite strong on the dark squares, so white plays to keep the black square on a light square. Cunning, eh?> Cunning indeed keeping black squares on light squares...Its Brilliant! :) ***** |
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| Mar-05-16 | | Once: Okay, okay, the Black <king> on light squares. What can I say, I'm a poet not an engineer! |
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Mar-05-16
 | | Sally Simpson: Hi alfiere nero,
click for larger view43. Rg4+ looks good but Kh8 and Nh7 is a set-up to crack. When King hunting always look first to cut off the flight squares. Then checks become stronger. Anything else to guide to you.
There is an undefended Black Queen on the board.
43.Qh5 sets a Queen Winning trap. Look at the above position and see it with White to move.
Then 43.Rg4+ wins the undefended Black Queen.
And slowly but surely you eliminate the good moves and play the best move. ...and having proudly said that 99% of us including me would have played 43.Rg4+ :) |
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Mar-05-16
 | | perfidious: <Once....I'm a poet not an engineer!> Reminds me of the old Star Trek scene featuring yet another duel between McCoy and Spock: McCoy: I'm not a magician, Spock, just an old country doctor! Spock: As I always suspected. |
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| Mar-05-16 | | King Harvest: Well one must work within one's limitations, mustn't one? I quickly saw that Nxh5 gxh5 Qxh5 was promising, then quickly decided to call that the solution ;) reasoning that all I play these days is blitz and I'd blitz that sac. (No way I'm gonna calculate to the bottom there, not with the clocks turned off and a jar of ritalin at my side) |
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| Mar-05-16 | | King Harvest: Looking over other solvers it seems I wasn't the only person who saw this from a blitz perspective... Nxh5 demands to be played -- we'll work out the details on the opponent's clock ;) |
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| Mar-05-16 | | dufferps: It took me a while to understand 45.dxc5, giving black a chance at ...Bxc5+ (losing his bishop,but delaying checkmate) But white has taken away black's last defense against Bb3#. The Bishop Sacrifice at c5 is all he can do to delay the checkmate. |
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| Mar-05-16 | | BOSTER: Some writers warn us don't move your queen
too early.
But this doesn't mean that black queen not permited to be touched. |
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Mar-05-16
 | | Jimfromprovidence: I remember this puzzle from a few years ago. The line beginning 40...Kh8 41 Nf4 f5 I found pretty interesting. 
click for larger view |
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| Mar-05-16 | | agb2002: The material is identical.
The first move that comes to mind is 40.Nxh5+ gxh5 (else drop a pawn) 41.Qxh5: A) 41... Nh7 42.Rh4 (I've been unable to exploit the idea 42.Rxe7+ Rxe7 43.Qxh7+ Kf8 44.Qh8+ Kf7 45.Qxd8, Black can play 42... Qxe7) A.1) 42... Ng5 43.Qg6+ Kf8 44.Rh8#.
A.2) 42... Qg(h)8 43.Bxh7 recovers the knight with two extra pawns and attack. B) 41... f5 42.Qxf5
B.1) 42... cxd4 43.Rg4+ Kh6 (43... Kh8 44.Qh5+ Nh7 45.Qxh7#) 44.Rg6+ and mate next. B.2) 42... Bg5 43.Rg4 looks desperate for Black.
B.3) 42... Bf6 43.dxc5 gets a fourth pawn for the knight and makes possible an eventual Bb3+. For example, 43... Qd2 44.Rg4+ Kf7 45.Bb3+ Ke7 46.Re4+ wins decisive material. B.4) 42... Rc6 43.Rg4+ Kh6 (43... Ng6 44.Rxg6+ wins decisive material; 43... Kh8 44.Qh5+ and mate in two) 44.Qf4+ Bg5 (44... Kh5 45.Rh4+ Bxh4 46.g4#) 45.Rxg5 Qxg5 46.Qxf8+ Qg7 (46... Kh5 47.Qe8+ Rg6 48.Qxg6+ with a won pawn ending) 47.Qf2 with the double threat Qh4# and Qxc6, and at least three pawns for the exchange. B.5) 42... Qd6 43.Rg4+ Kh6 unclear.
I don't know but I think I'd play 40.Nxh5+. |
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| Mar-05-16 | | 1 2 3 4: <WorstPlayerEver: However, I am very grateful for this puzzle; it's worth a deep study.> Aren't all Saturdays and Sundays? |
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| Mar-05-16 | | stst: Looks like the most lucrative for White is to sac the N for 2 p: 40.Nxh5+ gxh5 (Well, of course Black may opt not to recapture, but move the K, surely that would be very passive.....leave for (*) later)
41.Qxh5 then it would be very easy for White IF...
(A) ...... Qe8
42.Rg4+ Ng6
43.RxN+ Kf7
44.Qd5+ Kf8
45.Qg8#
This should not happen, the more natural defense is
(B)
41...........Ng6
42.Rg4 then Qe8 does not prevent RxN+ supported by B & Q, so 42.....Kf7 try fleeing may delay mate
To guard the K fleeing to the Q-side, either the R moving to d-file, or it should be better to move the d-P, since cxd4 is imminent giving huge advantage to Black's hope for a passing P, thus
43.d5 now Qe8 would block the K fleeing, so Ke8, next onto the diagonal d7, so White better take the N with R, giving a possible pin K-Q scenario...leaving g5 for the Q to guard that diagonal
44.RxN Kd7
45.Qg4+ now obviously Kd6 ==> Qe6#, therefore Ke8 back-track, but then the terrible scenario of a R-back rank + ensues:
46.Rg8+ and Q lost without compensation...
Black can resign
See if the game proceeds in a totally different line....
43. |
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| Mar-05-16 | | alfiere nero: Thanks Sally Simpson, and Once. I can benefit from the help (and honesty!) of more advanced players. |
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| Mar-05-16 | | stst: Ya, missed the refusal f5!
BUT, my humble opinion, this gets the K more exposed, as the game reveals, more space for White to cruise to the finishing line much more comfortably.. the last desperate Rg7 did not do much defense, White's Q can easily swing and the R can trade off Black's R+N.
The game last blow, dxc5 is a nice touch though.
BxP allows Bb3 and Qf7+ is deadly. |
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Kibitzing
sac: 40.Nxh5+