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| Aug-27-15 | | M.Hassan: "Medium"
White to play 25.?
White is a pawn down.
25.Rxg7+!
A)
25..........Kxg7
26.Bc1+(disc.) Kh8
27.Bxb2
and black Queen is lost.
B)
25...........Kh8
26.Rg8+ Rxg8
27.Bf6+ Kh7
28.Qxg8+ Kh6
29.Qg6# |
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| Aug-27-15 | | dfcx: white is one pawn short but have great positions.
25.Rxg7+ looks very interesting.
A. 25...Kxg7 26.Bc1+ wins the queen, there also may be a mate without taking the queen. B. 25...Kh8 26.Rg8+
B1. 26...Kxg8 27.Bc1+ same as A.
B2. 26...Kh7 27.Rxf8 wins a rook
B3. 26...Rxg8 27.Bf6+ Kh7
B3.1. 27...Kh7 28.Qxg8+ Kh6 29.Qh6#
B3.2 27...Rg7 28.Qd8+ Kh7 29.Rxg7+ Kh6 30.Qh8#
looks pretty easy. |
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| Aug-27-15 | | Honey Blend: I was eyeing on 25. ♗f6!? ♕c1+ 26. ♔g2 ♕h6! 27. ♖xg7+ ♕xg7+ 28. ♗xg7 ♔xg7 but thought this is too convoluted for a Thursday puzzle. |
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Aug-27-15
 | | Jimfromprovidence: I (erroneously) assumed that white had to play the set up move 25 Bf6 before attacking the g pawn.
click for larger view Still winning but nowhere close to a mate. |
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| Aug-27-15 | | diagonalley: ...aaaaah, the key move to spot was of course 26.R-N8+ ... sadly <diagonalley> missed it :-( |
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| Aug-27-15 | | agb2002: White is one pawn down.
The obvious move is 25.Rxg7+:
A) 25... Kxg7 26.Qd4+
A.1) 26... Kf7 27.Qf6+ Kg8 (27... Ke8 28.Qe7#) 28.Bc1+ Kh7 29.Qg7(h6)#. A.2) 26... Kg6 27.Bd8+ Kf7 (27... Kh5(6,7) 28.Qh5#) 28.Qf6+ Ke8 29.Qe7#. A.3) 26... Kg8 27.Bd8+ as in A.2.
A.4) 26... Kh7 27.Qh4+ Kg6(7,8) 28.Bd8+ Kf7 29.Qe7#.
A.5) 26... Rf6 27.Qxf6+ Kh7 (27... Kg8 28.Bc1+ Kh7 29.Qg7(h6)#) 28.Qf7+ Kh8 29.Bf6#. B) 25... Kh8 26.Rg8+
B.1) 26... Rxg8 27.Bf6+ Rg7 (27... Kh7 28.Qxg8+ Kh6 29.Qg6(h8)#) 28.Qd8+ Kh7 29.Rxg7+ Kh6 30.Qh8#. B.2) 26... Kh7 27.Rh8+
B.2.a) 27... Rxh8 28.Qf7#.
B.2.b) 27... Kxh8 28.Qd4+ transposes to A.
B.2.c) 27... Kg6 28.Bh4(e7,d8)#.
B.2.d) 27... Kg7 28.Qe5+ Kf7 (28... Kg6 29.Bd8+ Kf7 30.Qe7#) 29.Rh7+ Kg6(8) 30.Qg7#. |
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| Aug-27-15 | | Moonwalker: So I have two questions, I'd appreciate it if someone would enlighten me.
I worked out that 25.Rxg7 is the best move in the given position. The rook is temporarily immune because the discovered check wins the black queen so black's only response is to retreat the king to h8. <Question 1> Should I consider the puzzle solved even though I couldn't see the eventual win? <Question 2> I try to solve these in my head. Should I set up a board to help me solve these puzzles? The reason for the second question is that I find it much easier to see a winning move in a position OTB but I struggle to keep a combination in my head if it has more than a couple variations. |
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| Aug-27-15 | | gofer: The first move is "obvious" as it sets up a huge discovered check, that
also allows the winning move of Bc1+, but there is more to the
discovered check that meets the eye!
<25 Rxg7+! ...>
Black cannot accept due to mate the 5 more!
25 ... Kxg7
26 Qd4+!!! ...
26 ... Rf6
27 Qxf6+ Kh7 (Kg8 28 Bh6+ Kh7 29 Qg7#)
28 Qf7+ Kh8
29 Bf6#
26 ... Kg6/Kg8
27 Bd8+! Kf7 (Kh8/Kh7/Kh6/Kh5 Qh4#)
28 Qf6+ Ke8
29 Qe7#
26 ... Kf7
27 Qf6+ Kg8 (Ke8 Qe7#)
28 Bh6+ Kh7
29 Qg7#
26 ... Kh7
27 Qh4+ Kg6/Kg7/Kg8
28 Bd8+ Kf7
29 Qf6+ Ke8
30 Qe7#
So black must refuse!!
<25 ... Kh8>
<26 Rg8+! ...>
26 ... Rxg8
27 Bf6+ Rg7 (Kh7 28 Qxg8+ Kh6 29 Qh8#)
28 Qd8+ Kh7
29 Rxg7+ Kh6
30 Qh8#
<26 ... Kh7>
Now at this point white has SUCH a massive attack that there must be a forced mate, but I can't see it! So instead I found a simple win... 27 Rxf8 Qb1+
28 Kg2! ...
forcing the exchange, due to the threat of Qg8#, and that
the tricky 28 ... Be6 loses horribly to 29 Rf7+!...
28 ... Qe4+
29 Qxe4+ fxe4
30 Be7 
click for larger viewBlack is dead...
~~~
Hmmm, got it, but is there something more dramatic I have missed?!??! <Doh!!!>
<agb2002> shows how the <27 Rh8!> forces the mate. So close
but so far... |
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| Aug-27-15 | | Once: Ah, yes, Rg8 and Bf6+ are the keys here. Enjoyable little puzzle. |
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| Aug-27-15 | | saturn2: 25 Rg7 Kh8 (otherwise Q for R+B)
My 26th move was Bd2. It prevents checks on the 2th rank and also 3 heavy pieces point to g8 now. This should be enough. |
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| Aug-27-15 | | morfishine: <25.Rxg7+> and Black can resign. As noted, the key move after 25...Kh8 is <26.Rg8+> and Black can only "cast aspersions" at his own play <saturn2> I think you are right <moonwalker> (Q1): Depends on your own standards and what you are trying to do with these puzzles and chess in general (Q2): Again, depends on what you are trying to do. I've heard seeing a 3-D board has a positive effect being more real. Either way, the key is to try to solve visually <gofer> The deflection keeps on ticking ***** |
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| Aug-27-15 | | wooden nickel: It was hard deciding on which good move to choose 25.Rxg7+ or Bd2 or Rg3, not to mention which follow-ups, what a banquet today.
I like this variation after 25.Rxg7 Kh8 26.Rg8+ Kh7
click for larger viewand 27.Rh8+! is very elegant.
Since I missed that one while not using a computer, I went for 25.Bd2. |
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| Aug-27-15 | | stacase: 25. Rg7 is the killer move. Why Black carried on for three more moves is a mystery |
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| Aug-27-15 | | whiteshark: <25.Rxg7+!>, that's all I wrote. |
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| Aug-27-15 | | kevin86: The rook sac- accepted or now blows up black's position. |
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| Aug-27-15 | | Tiggler: I went for 25. Rxg7 Kh8 26. Bf6 thinking that was the quickest mate, but it isn't because it allows a series of spite checks. It results in mate on move 33 instead of move 31. |
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| Aug-27-15 | | OutOfSync: I agree with chrisowen .... |
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| Aug-27-15 | | TheFocus: 25.Rxg7+. Very simple to see. |
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| Aug-27-15 | | rickycota: What about 25.Qf3? I think it works pretty well too |
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| Aug-27-15 | | psmith: I had 25. Rxg7+ Kh8 26. Qd1 Qb5+ 27. Ke1 Qe5+ 28. Be3. That wins. But then it looks like just about anything wins on move 26. |
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| Aug-27-15 | | Moonwalker: Thanks <morfishine>. I'm obviously trying to get better so I'll keep plugging away trying to solve visually and only count seeing the complete combination. There goes this week's streak :-) |
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| Aug-27-15 | | Tiggler: 25.Bd2 is +M8, 25.Rxg7+ is +M6. Houdini 1.5a |
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| Aug-27-15 | | Tiggler: <Moonwalker> If I can't see all the variations from looking at the diagram on the home page, I select my choice for the first move and click the link to the puzzle page. On my laptop, and with the default pgn viewer it happens that the diagram opens with none of the moves below visible, but with the row of forward and back arrows at the bottom in view. So chose your move, click the forward arrow. If you were right (or rather if the player agreed with you), chose your next move. And so on. On Saturday and Sunday I don't think anyone can see everything. |
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| Aug-27-15 | | morfishine: <Moonwalker> I spent ~2 years working on solving puzzles having been primarily an OTB player. <Patriot> & <sevenseaman> were extremely helpful in assisting me. A lot depends on what you want to do in chess. I would work as many tactical problems each day so you can build "pattern recognition". This enhances your visualization. For each problem <Patriot> taught me to go through a checklist of checking and forcing moves first. This saves time in calculation. Always try to solve visually first and don't worry if you have to finally resort to a PGN viewer or board. After all, if you don't see it, sometimes you have to see it to see it :) ***** |
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| Aug-27-15 | | Moonwalker: <Tiggler> that's what I do too. On mobile only the first row of the game is shown basically turning the puzzle into <guess-the-move> style. I usually do ok in that scenario. Still I would love to see the whole combination to have confidence in making those moves :-) <<morfishine>: ... sometimes you have to see it to see it>
Ain't that the truth!
Thank you both for the advice.. |
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Kibitzing
sac: 26.Rg8+
