| Apr-27-13 | | Tired Tim: Wednesday or Thursday puzzle 30? |
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| Sep-14-16 | | Fish55: Got it all the way to the final position. |
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| Sep-14-16 | | patzer2: Like <Fish55>, I correctly played guess the move from the start of the demolition combo with 30. Rxg7+! until the game's finale. For an improvement, immediately countering White's pressure on the seventh rank with 24...Rd7 = (-0.33 @ 23 depth, Deep Fritz 15) would have held it level or better for the second player. |
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Sep-14-16
 | | An Englishman: Good Evening: Not often that I see an entire mate in 9. |
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| Sep-14-16 | | agb2002: White has a bishop for a knight.
White can attack the black king with four pieces. The possibility of pinning the pawn on f6 suggests 30.Rxg7+: A) 30... Kxg7 31.Qxg5+
A.1) 31... Kf7 32.Qh5+
A.1.a) 32... Kf8 33.Qh6+
A.1.a.i) 33... Kg8 34.Re7 Rd2+ 35.Bxd2 Rxd2+ 36.Kh3 Qd7+ 37.Rxd7 Rxd7 38.Qxf6 + - [Q+2P vs R]. A.1.a.ii) 33... Kf7 34.Qxh7+ Kf8 35.Re7 as above. A.1.b) 32... Rg8 33.Re7 as above.
A.1.c) 32... Rg7 33.Re7+ and mate in two.
A.2) 31... Kf8 32.Qh6+ is similar or transposes to A.1. A.3) 31... Kh8 32.Re7
A.3.a) 32... Rg8 33.Qh6 and mate soon.
A.3.b) 32... Rd2+ 33.Kh3 (33.Bxd2 fxg5 - +) 33... Qd7+ (33... Rg8 34.Bxf6+ and mate in two) 34.Rxd7 R2xd7 35.Bxf6+ Rg7 36.Qxg7#. B) 30... Kh8 31.Rxg5 + - [N+P].
C) 30... Kf8 31.Rxg5
C.1) 31... fxg5 32.Qf5+ Kg8 (32... Rf6 33.Bxf6 wins) 33.Qxg5+ Rg6 (else 34.Qg7#) 34.Qxd8+ and mate next. C.2) 31... Rd4 32.Rg8+ Kf8 33.Qg7#.
C.3) 31... Rd2+ 32.Kh3
C.3.a) 32... Qd7 33.Rg8+ Kf7 34.Rg7+ Kf8 35.Rxd7 wins. C.3.b) 32... fxg5 33.Bxd2 Rxd2 34.Qf5+ Kg8 (34... Kg7 35.Re7+ and mate in two) 35.Qxg5+ Qg6 36.Qxd2 + - [R+2P]. |
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| Sep-14-16 | | Aunt Jemima: So much for my winning streak. I couldn't see this one at all. I was thinking about 30. h4 Rd2+ 31. R1e2 Rxe2 32. Rxe2 and where does the knight go? if 32...Nf7 then 33. Bxf6 where 33...Qxf6 allows 34. Re8#. Got this all wrong. |
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| Sep-14-16 | | gofer: As many are saying this was quite a nice foreable future for white.
Black has no good alternatives to the line played and so the outcome
is very predictable.
I might quibble that <36 Kh3> seems to be
a "mistake" as it allows <36 ... Qd7+>, where black can soldier on for
a while, but this is still clearly winning.
The really interesting part of the game is <24 Re7!>. 
click for larger view11 moves later white plays the rook-reloader with <35 Re7>, which announces the end of the game... |
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| Sep-14-16 | | drollere: black's threat of Qxf3+ only loses the N after Qxf3, and the R canon is aimed at an empty d file. time to crunch. 30. Rxg7+ Kxg7
31. Qxg5+ Kh8
32. Re7 Rg8
33. Qh6 etc.
timman chose Kf7 to prevent Re7, but away from the edge of the board the position allows the white Q a number of manipulating checks to ensure Re7 happens anyway. the futile checks against the white K only delay the inevitable, and white's refusal to capture at d2 is an amusing gesture -- "oh please, jan, you're being silly!"). in both variations, the p at f6 must not be disturbed! |
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| Sep-14-16 | | AlicesKnight: Very nice (didn't see that a route in can be forced by the Q). |
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Sep-14-16
 | | steinitzfan: I got it but I got briefly hung up on 30 Qxg5. Wrong move order. With the moves played, White's rook and queen invade at a very low cost. |
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| Sep-14-16 | | YouRang: Wednesday 30.?
click for larger view
I've seen enough puzzle to quickly spot that my (white) Bc3 would pin the Pf6 that guard black's Ng5, if only I can put black's king on g7. That, of course is easy: <30.Rxg7+ Kxg7>, which (thanks to the pin) allows <31.Qxg5+>
click for larger view
Materially, I've given up a R for a N+P, but much more importantly, I've gained a strong attack since I have the initiative, and my Re1 is poised to strike the 7th rank with deadly force. Meanwhile, black's pieces sit there like stumps. It's not too hard to confirm that the attack wins once the rook gets to e7. Examples: - 31...Kh8 32.Re7 and black can only hemorrhage material before getting mated. - 31...Kf7 (breaking pin) 32.Qh5+ Kg8 33.Re7, etc. - 31...Kf8 32.Qh6+ Kf7 33.Qxh7+ Re7, etc. |
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| Sep-14-16 | | Pyrandus: Waterinen, the modern King of the King's Gambit. |
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| Sep-14-16 | | stacase: Once you see that a Rook sacrifice will result in pinning the Black Knight's protecting Pawn, it's a romp to the end. |
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| Sep-14-16 | | nescio: http://www.chessgames.com/perl/ches...
10 games in 10 years and not a single draw. Remarkable. |
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| Sep-14-16 | | zb2cr: I found this one rather easily, once I convinced myself that White's first move 30. Rxg7+ worked if Black declined the sacrifice with 30. ... Kf8. The entire set of lines given as (C) by <agb2002> is a thorough analysis. Well done to <agb2002>! |
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Sep-14-16
 | | Jimfromprovidence: There is also 30 Rxg7+ Kh8 31 Qxg5!, below. (as well as 31 Rxg5).
click for larger view |
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| Sep-14-16 | | Cheapo by the Dozen: Nice one.
The key turns out to be to make all about having the queen and surviving rook threaten immediate mate, so that Black's tempo-in-hand doesn't accomplish anything -- in particular so that diverting White's bishop with ... Rd2+ doesn't help him. |
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| Sep-14-16 | | TheFocus: Easy for a Wednesday, but I had to set up the board. |
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| Sep-15-16 | | agb2002: <zb2cr> Thank you! |
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Kibitzing
sac: 30.Rxg7+