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Later Kibitzing> |
| Sep-04-13 | | jerseybob: I guess the idea behind 25.Nh5 is 25..Nh5 26.Qg4,Nf6 27.Qg2 giving up the knight for the open file? Might work, might not, but black's doing too well on the q-side to be distracted by unnecessary drama. |
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Jun-25-14
 | | Phony Benoni: Hmmm, I wonder if this is a mistake. White just plays 28.Qxg7#. where's the puzzle? Good think White has that, since otherwise Black would mate after 28...Rb1+. Nothing like having the move. |
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| Jun-25-14 | | weary willy: Subtle! That's what I like about you, PB. |
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| Jun-25-14 | | MountainMatt: Good ol' Wednesday, aka "get the first move but miss the follow-up" day. |
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| Jun-25-14 | | Steve.Patzer: You do realize it is black to move? |
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| Jun-25-14 | | M.Hassan: "Medium/Easy"
Black to play 28...?
Black is a pawn up and has a Bishop for a Knight.
Black is at the threshold of being mated on g7, so he can only use forcing moves:28.............Rb1+
<if 29.Kc2 R8b2#>
29.Nxb1 Qb2+
30.Kd1 Qxb1+
31.Bc1 Qd3+
32.Bd2 Rb1#
What if:
31............Qd3+
32.Ke1
Black can not mate and I do not know what happens. Have to look at the solution. ===========
Sacrificing both Rooks just did not occur to me and it is quite clever, a check by Bishop followed by the Queen to a1 |
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Jun-25-14
 | | FSR: My first impulse was 28...Rb1+, but after 29.Nxb1 (29.Kc2? R8b2#) Qb2+ 30.Kd1 Qxb1+ 31.Bc1 Qd3+ 32.Ke1 (32.Bd2? Rb1#) Qc3+ 33.Kf2 (33.Bd2? Rb1+ wins material; 33.Kd1 Qd3+ repeats) I don't see a win for Black, or even a clear draw. This led me to the zwischenzug 28...f5! 29.gxf5 (29.Qxf5 Bd3! 30.Qxe5 Rb1+ 31.Nxb1 Rxb1#, or 30.Be1 Qxc3+! 31.Bxc3 Rc2+ 32.Kd1 Rb1#), and only now 28...Rb1+! 29.Nxb1 Qb2+ 30.Kd1 Qxb1+ 31.Bc1 Qd3+ 32.Ke1. Now, having opened the f-file, Black has 32...Re8+! 33.Kf2 Re2+! winning the queen and the game, either immediately or after 33.Kf1 Re4+. |
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Jun-25-14
| | FSR: Heh. As with <M.Hassan>, the double rook sac somehow never occurred to me. Obviously it's a lot stronger than my line, although the engines agree that my 28...f5?! also wins. White's best line is to give up the exchange with 29.Qxg7+, but Black is winning (an advantage of over -2.0). |
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Jun-25-14
 | | al wazir: <FSR: As with <M.Hassan>, the double rook sac somehow never occurred to me.> You think that's bad? It did occur to me. I considered 28...Rb1+ 29. Nxb1 Rxb1+ 30. Kxb1 Bd3+ 31. Kc1 f5... and never saw 31...Qa1# ! |
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| Jun-25-14 | | gofer: A simple forced mate...
<28 ... Rb1+>
<29 Nxb1 ...> (Kc2 R8b2#) At this point moving the queen to b2 seems to fail as white
has an escape route to e1!
29 ... Qb2+
30 Kd1 Qxb1+
31 Bc1 Qd3+
32 Ke1  (Bd2 Rb1#)
But black has a more forcing line than this!
<29 ... Rxb1+!>
<30 Kxb1 Bd3+> (Kc2? Qb2#) <31 Kc1 Qa1#>
~~~
Easier than yesterday! |
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| Jun-25-14 | | agb2002: Black has the bishop pair for a bishop, a knight and a pawn. White threatens 29.Qxg7#.
The knight shortens the black queen range. Therefore, divert it with tempo 28... Rb1+ 29.Nxb1 (29.Kc2 R8b2#) 29... Rxb1+ (29... Qb2+ 30.Kd1 Qxb1+ 31.Bc1 Qd3+ 32.Ke1 Qc3+ 33.Kf2 and White wins) 30.Kxb1 (30.Kc2 Qb2#) 30... Bd3+ 31.Kc1 Qa1#. |
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| Jun-25-14 | | diagonalley: hmmm... white has an imminent mate threat which black cannot do much about... therefore counter-attack with check is the only hope... 28... QxN+ 29.BxQ isn't going to cut it... what about 28... R-N8+ 29.NxR ...aahhhh, now the white B is no longer a saviour but a hindrance... 29... RxN+! quickly leads to mate. phew! |
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| Jun-25-14 | | engmaged: Nice to see ♘ pawns storm (and sac) in opposite wings in the same game. (8...b5 and 13.g4); but of course it is a common theme in a closed center positions. It made it very sharp that it might have intimidated both players to think of repeating for a draw. Unfortunately for White, it was him to reject the drawing with 25.Nh5. |
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| Jun-25-14 | | Cheapo by the Dozen: The most direct line turns out to actually work:
28 ... Rb1+
29 Nxb1 Rxb1+
30 Kxb1 Bd3#
White's only alternatives are
29 Kc2 R(1)b2#
or
30 Kc2 Qb2# |
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| Jun-25-14 | | Nick46: Possibilities too lush to resist. |
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| Jun-25-14 | | morfishine: Black's choice is narrowed due to the mate threat at <g7> <28...Rb1+> 29.Nxb1 (or 29.Kc2 R8b2#) 29...Rxb1+ 30.Kxb1 Bd3+ 31.Kc1 Qa1#
*****
FWIW: <FSR> Due to the mate threat at g7, <28...f5> was the first candidate I looked at; but the # moves to force the win seemed a little long for a puzzle (much less for me to visualize); all I had from it was a suspicion it was "good enough" but nothing concrete ***** |
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| Jun-25-14 | | Ashperov1988: 28...Rb1 Nb1 Qb2?! kd1 and he escapes I couldn't find the killer blow
So then only I found Rb1 Nb1 Rb1 Kb1 (Kc2 Qb2++) Bd3 kd1 and Qa1++ 28..f5 and white can prolong with Qg7 and even tho black is probably winning he has to play accurately! |
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Jun-25-14
 | | Honza Cervenka: 28...f5 is sufficient for win of black but I guess that mate in 4 is better solution. |
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| Jun-25-14 | | erdogankilic: al wazir: <FSR: As with <M.Hassan>, the double rook sac somehow never occurred to me: i remembered an old turkish chess story:" Kaleleri ver,Dilaram"ý kurtar: meaning "sacrifice the rooks-save Dilaram". In a match the winner would get the favourite wife of the opponent.In the present position, the nobleman, who played the white pieces , was to move, expecting to be mated on his opponents return move. Dilaram (the favourite wife)however saw how the happiness of her life could be saved, and whispered to her husband and lover:sacrifice the rooks-save Dilaram". 
click for larger view
click for larger view
(The piece on h3 is an Elephant (al-fil), which moves along diagonals two moves at a time, and, unlike its counterpart in the natural world, it can jump over other pieces.)
More at http://exeterchessclub.org.uk/conte...
The solution is 1. R4h8+ Kxh8 2. Af5+(bishop at h3 to f5) Kg8 3. Rh8+ Kxh8 4. g7+ Kg8 5. Nh6++ 1-0 |
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| Jun-25-14 | | notyetagm: Tolush vs A Filipowicz, 1964 <M.Hassan: Sacrificing both Rooks just did not occur to me and it is quite clever, a check by Bishop followed by the Queen to a1> Yes, Black sacrifices both of his rooks on the b1-square with 28 ... ♖b8-b1+! 29 ♘c3x♖b1 ♖b8x♘b1+! 0-1 just to get a clear shot at the <DEFENSELESS> White king with his light-square Black a6-bishop and his dark-squared Black e5-queen. Solving this puzzle reminded a lot of the famous <BATTLE OF MIDWAY>, in which the Americans sacrificed all of their torpedo bombers to get a clear shot at the Japanese aircraft carriers with their Dauntless dive bombers. |
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| Jun-25-14 | | notyetagm: Tolush vs A Filipowicz, 1964 <MountainMatt: Good ol' Wednesday, aka "get the first move but <<<miss the follow-up">>> day.> Yes, at first I thought the winning idea was 28 ... ♖b2-b1+! 29 ♘c3x♖b1 ♕e5-b2+? 30 ♔c1-d1 ♕b2x♘b1+ 32 ♗d2-c1 ♕b1-d3+ 33 ♔d1-e1 but then I realized that there is no mate on the e2-sq because that square is <DEFENDED> by the White g4-queen. So then I went back and since 29 ... ♕e5-b2+? did not work, I examined the <FORCING MOVE> 29 ... ♖b8x♘b1+! and saw the mate. A fantastic example on the <IMPORTANCE OF EXAMINING **ALL** OF YOUR FORCING MOVES>. Black can mate with <CHECKS> if he simply anaylzes it out far enough. Also a very good example of the <THREE PIECES RULE>, which says that three pieces attacking the king is a mating attack as you sacrifice one piece to give mate with the remaining two. Here Black is attacking with four pieces so he sacrifices two to give mate with the remaining two. |
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| Jun-25-14 | | notyetagm: Tolush vs A Filipowicz, 1964 28 ... ?
click for larger view28 ... ♖b2-b1+!
click for larger view29 ♘c3x♖b1 ♖b8x♘b1+! 0-1
click for larger view(CONTINUATION)
30 ♔c1x♖b1 ♗a6-d3+
click for larger view31 ♔b1-c1 ♕e5-a1#
click for larger view |
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Jun-25-14
 | | Penguincw: Hmm. I thought I got it with 28...Rb1+ 29.Nxb1 Qb2+ 30.Kd1 Qxb1+ 31.Bc1 Qd3+ 32.Ke1, but there's no mate that I see. |
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| Jun-25-14 | | kevin86: I saw this one . Black can give up both rooks so that mate can come with queen and bishop. |
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| Jun-25-14 | | notyetagm: Tolush vs A Filipowicz, 1964 <Penguincw: Hmm. I thought I got it with 28...Rb1+ 29.Nxb1 Qb2+ 30.Kd1 Qxb1+ 31.Bc1 Qd3+ 32.Ke1, but there's no mate that I see.> 
click for larger viewYes, that line you gave was my first attempt but I noticed that at the end of the given variation there is no mate on the e2-sq as that square is <PROTECTED> by the White g4-queen. |
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sac: 28...Rb1+