|Jul-12-17|| ||Phony Benoni: Lots of pins and stuff. Let's just try <20.Rxe6+>, because that's the sort of move to look at in these situation.|
21...Kf8 gets mated in a hurry: 23.Rb8+ Bd8 (23...Rd8 24.Rxd8+ Bxd8 2.Qe8#) 24.Qxc5+ Kg8 25.Re8#. And 21...Kd8 22.Rb8# at once.
So <21...fxe6> must be played, and White responds <22.Qxe6>, of course. Now 22...Re7 23.Rb8# -- which incidentally uncovering on Black's queen. That's a good detail to kep in mind, since it come in after Black's alternatives.
|Jul-12-17|| ||groog: Summed it up very nicely as usual Phony Benoni|
|Jul-12-17|| ||patzer2: Pretty easy Wednesday puzzle (20. ?) as 20. Rxe6+! either forces mate or wins the Black Queen with a discovered attack with check.|
For a possible early improvement for Black, I prefer 5...cxd4 as in the draw in E Kengis vs Lautier, 1996 over the more popular move 5...Qa5 played in the game.
|Jul-12-17|| ||Bluegrey: After 21...Kf8 22.Rb8+ Bd8 23.Q×d7 wins.|
|Jul-12-17|| ||agb2002: White is a bishop down.
The uncastled black king and the defenseless queen suggest 20.Rxe6+:
A) 20... fxe6 21.Qxe6+
A.1) 21... Be7 22.Rb8+ Rd8 23.Rxd8+ Kxd8 24.Qxa2 + - [Q+P vs r].
A.2) 21... Re7 22.Rb8#.
A.3) 21... Kd8 22.Rb8+ Kc7 23.Qb6#.
A.4) 21... Kf8 22.Rb8+ Bd8 (22... Rd8 23.Rxd8+ as in A.1) 23.Qxd7 (23.Qxa2 Rd8#) wins.
B) 20... Kd8 21.Rb8#.
C) 20... Kf8 21.Qxc5+ and mate in two.
D) 20... Be7 21.Rb8#.
|Jul-12-17|| ||NBZ: Shame - I looked at Rxe6+ fxe6 Qxe6+ but couldn't figure out what to do after Be7 Rb8+ Rd8. In hindsight, the queen on a2 is hanging! |
Spent much effort trying to make 20. Rb8+ Bd8 21. Rxd8+ work: one cute line is 21. ... Bxd8 22. Qa8+ Ke7 (Kc7 Bf4+ wins) 23. Bg5+? (simply Qxh8 is okay for White) f6 24. Rxe6+ Kxe6 25. Qe4+ Kd6?? (Kf7 and White has nothing) 26. Bf4#. Now THAT would have been one hell of a solution.
|Jul-12-17|| ||Cheapo by the Dozen: Ooh. I liked this one. Themes included:
1. Attack immediately, before Black can castle.
2. Capture at e6 before ever moving the b3 rook, so that it isn't defended by the a2 queen.
3. Once White's queen has recaptured at e6, Rb8+ could win Black's queen with a discovered attack ...
4. ... but not really, because White is at risk of suffering a back rank mate of his own.
|Jul-12-17|| ||morfishine: <20.Rxe6+> 20...fxe6 <21.Qxe6+> rips apart the Black position threatening mate (besides putting the White Queen on the deadly diagonal threatening the Black Queen)|
|Jul-12-17|| ||Richard Taylor: Nice game with pins and discovered checks etc as Phony Benoni explains very well. |
I recall 'Winning Chess' which I still have from the early to mid 60s. In it he talks about examining all checks and captures. I recall as a teenager being fascinated by the idea of forks and discovered checks, smothered mates etc etc
I was just winning a 3 - 0 game or I had the exchange advantage and despite reminding myself about N forks I fell into one and lost on time!! So all my chess study is a waste of time. But chess is still fascinating.
|Jul-12-17|| ||saturn2: Black has a piece more.
But after 20 Rxe6 fxR 21 Qxe6 the black king cannot walk out of a check Rb8+ and the queen on a2 falls.
The only thing black can do on move 20 is not take the fxRe6. Then however the attack on the king is too strong.
|Jul-12-17|| ||Once: In this puzzle, the Be6 in front of an uncastled king is someone with a face that is "begging to be punched".|
And we need to do it quickly before Black castles into safety.
|Jul-12-17|| ||Willber G: <saturn2: Black has a piece more.
But after 20 Rxe6 fxR 21 Qxe6 the black king cannot walk out of a check Rb8+ and the queen on a2 falls.>|
You need to be careful, though, black has a trap:
|Jul-12-17|| ||daveinsatiable: I looked at the above line, but as far as I can see it fails to the line given by Wilber above. What does white have after:
21. ... Kf8
22. Rb8+ Bd8
So I instead went for:
20. Rb8+ Ke7
21. Bxg5+ f6
22. Qxc5+ Rd6
23. Rxa8 fxg5 (or blacks a whole rook down)
24. Re8+ Kxe8
25. Qxd6 and black is the exchange down and in some difficulty.
|Jul-12-17|| ||daveinsatiable: Scrub that. White has Qxd7.
I mistakenly imagined that white could take the rook on b3, but it was just a mirage.
Back to the drawing board.
|Jul-12-17|| ||drollere: well i saw this one like a recipe for peanut butter cookies: 20. Rb8+ to annoy the black K, Ke7 is the only flight square (R is pinned); Bxg5+ because i can and f6 because he must; Qxd6# because that is what thermodynamics means.|
and i forgot that black has 20. ... Bd8!
it probably still wins, but is more work, starting with (ugh) g3 ...
|Jul-12-17|| ||swclark25: I was with <drollere> (except it was actually Qxe6++, not Qxd6++) and liked the thermodynamics reference. |
But alas, I also overlooked 20)...Bd8!
I'm going to re-check the game line to see if it also has a way out for Black.
|Jul-12-17|| ||Coriolis: I'm surprised no one else mentioned 20. Rb7. Is that an ok move?|
|Jul-12-17|| ||Willber G: <Coriolis: I'm surprised no one else mentioned 20. Rb7. Is that an ok move?>|
White gets his piece back but not much else.
|Jul-12-17|| ||Coriolis: Ok. Thanks for the info.|
|Jul-12-17|| ||swclark25: Looking at alternatives, I read thru <agb2002>'s post. Looks like his A.4 line shows a way out for black. |
I wondered how <agb2002> always seems to clearly post options, so I read his bio. Very interesting approach! Hopefully I can try to do similarly.
|Jul-13-17|| ||Richard Taylor: Well Komodo solves and double checks all the lines although it is good practice to do it without such devices if one has time.|