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| Jan-31-11 | | gmalino: Hello new week, seems like
25.Qxc8+ Bxc8
26.Re8+ Bf8
27.Rxf8#
is a nice little monday-combo. |
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| 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#. |
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| Jan-31-11 | | scormus: Q-sac. Must be Monday |
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| Jan-31-11 | | sevenseaman: Von Kolisch employed 25. Qxc8, the most efficient mate. |
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| Jan-31-11 | | TheaN: Monday 31 January 2011
<25.?>
Material: White up, ♘+♙ vs ♗
Candidates: <[Qxc8†]> pretty much when the Queen side popped up. -ML-
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. |
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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. |
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Jan-31-11
 | | wordfunph: forced..
1.Rxc8+ Bf8 2.Qxf8# or
1.Rxc8+ Bxc8 2.Re8+ Bf8 3.Rxf8# |
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| 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... |
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| 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. |
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| 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#
Material? Irrelevant. |
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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. |
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| 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!! |
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| 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 . . . |
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Jan-31-11
 | | kevin86: The queen is sac-ed and the rooks mate on the back row. Typical---Monday |
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| 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. |
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| 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. |
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Jan-31-11
 | | RonakSeanav: if black tried 4...Bxb4 insted of 4...Bb6. u think so its problem? I just want try |
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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. |
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| 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. |
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| 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. |
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| 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# |
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| Jan-31-11 | | lionel15: I enjoy Mondays |
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| 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. |
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| 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!! |
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| 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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