< Earlier Kibitzing · PAGE 2 OF 2 ·
|Jan-31-11|| ||gmalino: Hello new week, seems like
is a nice little monday-combo.
|Jan-31-11|| ||zb2cr: Very easy indeed, 25. Qxc8+ does the trick. Black can interpose 25. ... Bf8 and be mated in one with 26. Qxf8#, or capture 25. ... Bxc8 and be mated in two. As <Phony Benoni> points out, Black's Bishop covering f8 means the right way to do Black in is 26. Re8+, Bf8; 27. (either)Rxf8#.|
|Jan-31-11|| ||scormus: Q-sac. Must be Monday|
|Jan-31-11|| ||sevenseaman: Von Kolisch employed 25. Qxc8, the most efficient mate.|
|Jan-31-11|| ||TheaN: Monday 31 January 2011
Material: White up, ♘+♙ vs ♗
Candidates: <[Qxc8†]> pretty much when the Queen side popped up.
End of the month and new chances. Sort of. I think. Anyways, this is easy; sac the Queen for less material but in fact mate:
<25.Qxc8†> takes out the critical defender of the back rank. With unconnected and a trapped Rook, not recommended.
<25....Bxc8 (Bf8 26.Qxf8‡ 1-0) 26.Re8† Bf8 27.Rxf8‡ 1-0> take note that being disambiguous in the mating move is irrelevant, as either Rook mates on f8. Time to check.
|Jan-31-11|| ||agb2002: White has a bishop, a knight and a pawn for the bishop pair.|
Black threatens ... Qxc3.
The rook on c8 protects Black's back rank. Therefore, 25.Qxc8+ Bxc8 (25... Bf8 26.Qxf8#) 26.Re8+ and mate next.
|Jan-31-11|| ||wordfunph: forced..
1.Rxc8+ Bf8 2.Qxf8# or
1.Rxc8+ Bxc8 2.Re8+ Bf8 3.Rxf8#
|Jan-31-11|| ||gofer: White is completely in charge. The black king is already in a mating net, so check along the 8th rank, the
a2-g8 diagonal or the g file will be enough. We are meant to go for the obvious; < 25 Qxc8+ Bxc8 26 Re8+ Bf8 27 Rxf8#>.
But, what about the a2-g8 diagonal?
<25 d6 ...>
So what I hear you say? well there are two reasons why this is okay.
1) It frees up the d5 square for Qd5+
2) It block Bc5 from the f8 square
So we have actually gained a move in the mating sequence above, we now have
26 Qxc8+ Bxc8 27 Re8#
The only way to delay the mate seems to be <25 ... Qg2+ 26 Kxg2 Be4+ 27 Rxe4> and then its mate
next move, so okay <25 d6> is not as quick, but it is just as deadly...
|Jan-31-11|| ||Fuegoverde: 25 Qxc8+ Bxc8, 26 Re8+ Bf8, 27 Rxf8++ Very easy, means today is Monday, January is nearly over, so tomorrow I'll be back in the office with not much time to spend in CG puzzles.|
|Jan-31-11|| ||Patriot: With the black king stalemated it's time to look for checks, starting with removing the back rank defender.|
25.Qxc8+ Bxc8 26.Re8+ Bf8 27.Rxf8#
|Jan-31-11|| ||TheTamale: <VincentL>: Even though your way takes longer than Kolisch's way, I think it's a little cleverer. I give it a thumbs up.|
|Jan-31-11|| ||1.e4effort: 25. Qxc8+...Bxc8 Monday's Q sac
26. Re8+...Bf8 last gap blocking tactic - Black should just tip the King over here
27. either R xf8#
Hurray for Monday, my confidence renewed!!
|Jan-31-11|| ||estrick: I was trying to find a way to sac the queen on g7 or f7 before I noticed that Black's c pawn was in the way. Furthermore, Black doesn't have any pieced defending those squares anyway, so if White's queen could get there it would be mate without a sac. |
So, the next place to look for a queen sac was c8 . . .
|Jan-31-11|| ||kevin86: The queen is sac-ed and the rooks mate on the back row.|
|Jan-31-11|| ||Patriot: <<TheTamale>: <VincentL>: Even though your way takes longer than Kolisch's way, I think it's a little cleverer. I give it a thumbs up.>|
A win is a win! I give it a thumbs up also.
|Jan-31-11|| ||Patriot: Today's problem has a similarity to yesterday's--a piece out of play. Yesterday it was the h7-bishop, today it's the h8-rook.|
|Jan-31-11|| ||RonakSeanav: if black tried 4...Bxb4 insted of 4...Bb6. u think so its problem? I just want try|
|Jan-31-11|| ||deadwood53: Ah, thebish, only the e rook can mate, as the bishop on c5 will be able to capture the f rook, but only delay mate of the e rook.|
|Jan-31-11|| ||Patriot: <<RonakSeanav>: if black tried 4...Bxb4 insted of 4...Bb6. u think so its problem? I just want try>|
I believe this is one of the main lines in the Evans Gambit. For example, 4...Bxb4 5.c3 Bc5 6.d4 exd4 7.cxd4 Bb4+ 8.Bd2 Bxd2+ 9.Nbxd2. White sacrifices a pawn for central control.
I've gotten into serious trouble in this opening as black for not playing 3...Bc5.
|Jan-31-11|| ||YouRang: Funny, I didn't see the simple "remove the e8 defender with 25.Qxc8" idea.|
Instead, seeing the immobilized black king, I looked for a way to give check along the diagonal, and I didn't see much that black could do after 25.d6, threatening 26.Qd5#.
Probably best is 26...Qa2 (the only safe square from which black can guard the checking diagonal). But in that event, I had in 26.Rxf5 in mind, removing the guard of c8 (threat: 27.Qxc8#), and black is hosed.
|Jan-31-11|| ||wals: Analysis by Rybka 4 x64:
1. (#3): 25.Qxc8+ Bxc8 26.Re8+ Bf8 27.Rexf8#
2. (#4): 25.d6 Qxg2+ 26.Kxg2 Bxd6 27.Qd5+ Be6 28.Qxe6#
3. (#5): 25.Qxc7 Qxg2+ 26.Kxg2 Be7 27.Rxe7 Ra8 28.Rg7+ Kf8 29.Qf7#
4. (#6): 25.c4 Rf8 26.d6 Qxc4 27.Qxc7 Qxf1+ 28.Rxf1 Bd4 29.Qc4+ Be6 30.Rxf8#
5. (#7): 25.Re5 Rf8 26.d6 Qa2 27.Re7 Bd4 28.cxd4 Qf7 29.Rxf7 Rc8 30.Qxc8+ Bxc8 31.Rf8#
|Jan-31-11|| ||lionel15: I enjoy Mondays|
|Jan-31-11|| ||dzechiel: <deadwood53: Ah, thebish, only the e rook can mate, as the bishop on c5 will be able to capture the f rook, but only delay mate of the e rook.>|
I think you misread <TheBish>'s comment. As others have also pointed out, the move 27 capture on f8 delivering checkmate can be effected with either rook.
|Jan-31-11|| ||Lennonfan: My girlfriend who i taught to play 6wk ago could have got this one...and she doesn't even think castling is "fair"on the opponent haha...2wk ago i missed the monday puzzle,yet got the saturday within 30secs!!|
|Dec-10-14|| ||Knight13: <hedgeh0g: Seems a little silly to me to refuse the pawn with 4...Bb6 only to take it later under less favourable conditions with 5...Nxb4?!> Agreed. Perhaps he changed his mind? Happens to all of us. Speaking of which, I find 16... Bf5? to be even more silly. So White wanted to open up the f-file for his Rook with 16. f4 for obvious reasons. Not only did Black grant his wish but also sent a pinned Bishop as a gift. 16... e4 may be the most sensible reply, but Black was already clearly losing.|
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