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Later Kibitzing> |
| Apr-11-16 | | morfishine: <20.Qxh7+> and avoid the one trap: if 20...Kh8 not 21.Qxf8? but 21.Re8 <Once> twice
***** |
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| Apr-11-16 | | mel gibson: I love Monday puzzles - so easy. |
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| Apr-11-16 | | CHESSTTCAMPS: With white's rook battery controlling the e-file and black's Bc8 creating a fatal back-rank weakness, white has a meat-and-potatoes combination to force mate: 20.Qxf7+ Kh8 (Rxf7 21.Re8+ Qxe8 22.Rxe8#) 21.Re8 h6 (Qd6/e7 22.Qxf8+) 22.Qxf8+ Kh7 23.Rxd8 and mate will follow soon after 24.Re7. |
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| Apr-11-16 | | whiteshark: <20. Qxf7+!>, and that's it. |
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| Apr-11-16 | | starry2013: I assume this is a queen sacrifice with the assumption black just takes with the rook and it leads to checkmate. I did consider even before I played the computer though that black might just move the king, and this is what the computer did. Qxf7+ Kh8
Re8 h6
Rxd8 Rxd8
Re8+ Kh7
Rxd8 Be6
Qf8 Rxd8
Qxd8 Bxb3
cxb3 b6
I came up with Re8 in the end and black ends up with no pieces and I've got a queen. Maybe there is a simple checkmate with the king moving, if not then it's not such a Monday puzzle. |
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Apr-11-16
 | | Sally Simpson: Good game.
(I played D.Coleman 30+ years ago. 1.e4 e5. Bc4 f5?! of course I was Black and lost.) Black went for the classic equalising trick here...
click for larger view...with 8...Nxe4 which was far too soon and Black's troubles stemmed from there. Play a combination because you want too and it's the best choice, not because it's there. (thank you Reti.) I do like White's 17th move.
click for larger view17.h3 (luft and waiting). Black succumbed and took the a5 pawn. All that was needed after that was for White not to play the 'winning' clever clogs move... 
click for larger view19.Qxf7+ (I've seen it happen in comparable positions.) 19...Rxf7 20.Rxe5 20...Qxe1+ 21.Rxe1 Kf8 OOPS! The most famous example of the above 'winning blunder' is: L Steiner vs K Helling, 1928
click for larger viewIf Black plays 16...Bg3 then 17.Qxf7+ works. But Black played 16...Bh2+ 17.Kf1 and then 17...Bg3. 
click for larger viewNow 18.Qxf7+ does not work. But White in that game and my DB. shows 20+ players since then doing the same thing played 18.Qxf7+ anyway. 0-1. |
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| Apr-11-16 | | not not: whats wrong with Bxf7? i dont see how black can defend... or im missing something |
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| Apr-11-16 | | not not: 20 Bxf7 and after king goes h8...
then 21 Re8 comes
is it all wrong?? any computer help? |
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| Apr-11-16 | | not not: 20 Bxf7 Rxf7
21 Re8
is mate on a spot... or im missing a 2 mover? |
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| Apr-11-16 | | groobs168: Right out of "Bobby Fischer teaches chess" strategy. |
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| Apr-11-16 | | gofer: <not not: whats wrong with Bxf7? i dont see how black can defend... or im missing something>
<not not: 20 Bxf7 and after king goes h8... then 21 Re8 comes is it all wrong?? any computer help?>
<not not: 20 Bxf7 Rxf7>
<not not: 21 Re8>
<not not: is mate on a spot... or im missing a 2 mover?>Well it wins... ...but perhaps not as easily as Qxf7+. 20 Bxf7+ Kh8
21 Re8 ...
22 ...Qd6 <--- maybe this is what you missed?! 22 Rxf8+ Qxf8
23 Re8 Bd7
24 Rxf8+ Rxf8
click for larger view |
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Apr-11-16
 | | paulalbert: Not hard, but you do have to consider Kh8. In chess it's not mandatory to take, which sometimes seems to be overlooked in comments on these puzzles. |
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Apr-11-16
| | Sally Simpson: Hi Not Not.
click for larger view20.Bxf7+ is a good move so you sit on your hands (on this case sit on your keyboard) and look for a better move. 20.Bxf7+ Kh8 21.Re8 Bd7 or 21...Bg4 White wins the Black Queen but no mate. |
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| Apr-11-16 | | zb2cr: A little tricky for a Monday. 20. Qxf7, Rxf7; 21. Re8+ is the obvious main line. But what if 20. ... Kh8? In that case, see helpful discussions by <dfcx>, <Dr. J>, <gofer>, <Once>. |
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| Apr-11-16 | | patzer2: Excellent choice for a Monday puzzle! For novices, visualizing the simple mate combination 20. Qxf7 Rxf7 21. Re8+ Rxe8 22. Rxe8# is a good starting point. For more advanced players, calculating the complete mate-in-six combination 20. Qxf7+ Kh8 (20... Rxf7 21. Re8+ Qxe8 22. Rxe8#)
21. Re8 h6
(21... Qxe8 22. Rxe8 h6 (22... Be6 23. Qxf8+ Bg8 24. Qxg8#) 23. Qxf8+ Kh7 24. Bf7 Be6 25.
Qg8#)
22. Qxf8+ Kh7 23. Bf7 Qxe8 24. Rxe8 Be6 25. Qg8# is a bit more of a challenge. Black's decisive mistake was the pawn grab 17...Qxa5?? allowing 18. Be5! Bxe5 19. Rxe5  (+3.47 @ 21 depth, Deep Fritz 15). Instead, 17...Bd7 18. Qd3!  leaves Black in the fight as play might continue 18...Be6 19. Bxe6
fxe6 20. Qb3 Qxa5 21. c3 h6 22. Qxb7 Qb5 23. Qxb5 cxb5 24. g3 (+0.95 @ 21 depth, Deep Fritz 15). Early in the opening, instead of 8...Nxe5? allowing 9. Nxe5 to (+1.64 @ 20 depth), Black might have improved with 8...0-0  to = as in N Grandelius vs V Kunin, 2015. |
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Apr-11-16
| | Sally Simpson: Hi Gofer,
Good post.
I like the 22...Qd6 defence but then we have a Queen stopping a back rank mate and the game.... E Z Adams vs Carlos Torre, 1920
....springs to mind.
So White can start hanging his Queen to chase the Black Queen away from holding f8. 
click for larger view23.Qf4 Qc5 24.Qd4
click for larger viewPulling ideas from other games 'Not Not' and applying them in our games is why we play over games. |
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| Apr-11-16 | | 1.e4effort: <once> again, your analysis is razor sharp and tying it with your allusion to the day's events was like an arrow to the heart of the matter |
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| Apr-11-16 | | kevin86: There is a three move mate if black accepts the queen sac...but the road is harder is black declines it. |
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| Apr-11-16 | | The Kings Domain: Bungled on this easy one and thought 20) Re8. Gotta love these multiple munching mates. |
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| Apr-11-16 | | not not: goofer, in your diagram white play queen b3 saving bishop and it's queen vs rook which is wining isnt it? Sally what's wrong with having queen vs rook? I think it's easy win anyway |
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Apr-11-16
 | | gawain: What a tremendous attack has been set up! With an interesting pitfall that W must avoid. <Once> and others have explained nicely. |
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| Apr-11-16 | | not not: Sally, it's just i don't like check mating people;
I prefer tormenting them until they had enough and simply resign; it feels much better that way once mouse is dead, what fun for cat? |
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| Apr-11-16 | | not not: how about playing re8 first to chase queen away and then bf7? and then terrorize queen with rook hanging? is it not more fun than checkmate?? |
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Apr-11-16
| | Sally Simpson: Hi not not,
"how about playing re8 first to chase queen away and then bf7"
click for larger viewIf 20.Re8 to chase the Queen away the Black Queen runs to f6. 20.Re8 Qf6
The game is back in the pot and if as you suggest.
21.Bxf7+ Qxf7
Black is winning.
Don't mess about with won games. Caissa will shun you and the ghost of Morphy will appear in your bedroom and pee into your slippers. |
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Apr-11-16
 | | Bubo bubo: Black is behind in development, and the LSB still sitting on its home square weakens the back rank. This allows White to apply the standard trick 20.Qxf7+, with mate after 20...Rxf7 21.Re8+ Qxe8 22.Rxe8# or decisive win of material after 20...Kh8 21.Re8. |
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Kibitzing
sac: 20.Qxf7+