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Dec-21-10
 | | Phony Benoni: Tricky. There are a lot of targets in the White position, but the problem is finding which one to hit. As a lot of solvers probably will, I looked first at 25...Rxd2+ 26.Rxd2 Bb4 skewering the rooks. But that doesn't seem to lead to anything more than exchanges, especially with the Bb7 hanging. Tried to eliminate that problem with 25...Bxf3+, but 26.Nxf3 relieves White of any embarrassment. There seems no way to lure White's king to a dark square so the Bc5 can do a double attack. Then it hit me: the real target is the Nd2, and <25...Bb4> sets up a fatal pin along with the discovered attack on the Rc2. 26.Rxc8 Bxc8 gets that bishop out of harm's way, and 26.Bxb7 Rxc2 loses the exchange and more. If you see 25...Bb4 first, this is pretty easy. But those false leads are very attractive, and I think this will on the whole be judged "tough for a Tuesday". |
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| Dec-21-10 | | patzer2: For today's Tuesday solution, 25...Bb4! sets a winning pin. |
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| Dec-21-10 | | rilkefan: Relatively hard for a Tuesday (for me anyway) - maybe if it had been later in the week I would have looked first for something less direct than Rxd2 or Bxf3/Rd3+. |
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| Dec-21-10 | | dzechiel: Black to move (25...?). Material even. "Easy."
After a bit of looking around and some "I go there, he goes there, I go there..." I think I like 25...Bb4
as the key move. While the black bishop on b7 is still en prise, black has set up threats of his own that must be addressed. Paramount is 26...Rxc2, but there's also 26...Bxd2. White can try 26 Rxc8
but black just answers with
26...Bxc8
removing the bishop from the potential capture on the long diagonal. Now white finds that his knight is attacked twice, defended zero times, and it's pinned. White's going down here (and while the calculation wasn't difficult, there was a lot of it necessary to ensure the key move worked). Time to check. |
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| Dec-21-10 | | knight knight: 25...Bb4:
a) 26. Rxc8 Bxc8 and the pinned knight on d2 is lost
b) 26. a3/Rb2 Rxd2+ 27. Rxd2 Bxf3+ 28. Kxf3 Bxd2 bishop ahead c) 26. Rd1/e2 Rxc2 rook ahead
d) 26. Bxb7 Rxc2 emerging a rook ahead due to the absolute pin on the knight e) 26. Nc4 Bxf3+ 27. Kxf3 Bxe1 rook ahead |
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| Dec-21-10 | | goldenbear: It took me at least a minute... |
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| Dec-21-10 | | SamAtoms1980: 25 ... Bb4 wins lots of stuff. |
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| Dec-21-10 | | M.Hassan: "Easy" Black to play 25...?
Materials considered even
Black can take advantage from the unprotected states of White Rooks by moving:25..............Bb4 pinning the White Knight <if the Knight moves 26...Bxe1>
couple of combinations may occur, the one that I followed is:
26.Rxc1 Bxc1
27.Re2 Rxd2
28.Rxd2 Bxd2
And Black is now ahead by a Bishop.
See if it's correct.
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Yes |
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| Dec-21-10 | | dcarlisle: This one took me a long time to find the pin with 25...Bb4. |
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| Dec-21-10 | | Old Wolf: Ideas in the position:
- white king exposed
- white rook @ c2 undefended
- white knight only defended by the c2 rook
- d2 and e1 lined up for a possible pin/skewer
Considering those ideas, we notice that we can make one move that will both attack the poorly-defended knight, and attack the undefended rook. White cannot meet both threats. |
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| Dec-21-10 | | SufferingBruin: Bb4 was dismissed out of hand because I knew, just knew, a forcing move wins. So I gave up. A capture or something. Damn right I screamed loud enough to wake the neighbors. |
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| Dec-21-10 | | estrick: No queen to sack. Mating attack looks unlikely. Next, look for loose pieces. Both of Whites's rooks are unprotected, and his knight is already attacked once and defended once. Bb4 attacks the knight a second time, and skewers it to the rook on d1, while threatening to remove White's only defender of the knight with a discovered attack on c2. I love moves that accomplish so many things at once. |
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| Dec-21-10 | | TheBish: J Lynch vs Michel, 1945 Black to play (25...?) "Easy"
After awhile of making it harder than it really is, I came up with the winning 25...Bb4!, winning a piece. If 26. Rxc8 Bxc8 and the pinned knight is lost. Worse is 26. Bxb7 Rxc2 and the knight is again lost, this time with Black netting a rook. |
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| Dec-21-10 | | stacase: Move for move here, and yes I would have played it that way over the board. The lunar eclipse on the solstice that I can't see because of a snow storm must be making me smarter than usual (-: |
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| Dec-21-10 | | anandrulez: I thought too much and came up Be3 :) and figured this is not a Tuesday puzzle ! Does it also not win - I think ends up with exchange up . |
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| Dec-21-10 | | Formula7: 25...Bb4 and now either 26.Rxc8 Bxc8 and Black wins the pinned knight, or 26.Bxb7 Rxc2 and Black wins a whole rook because once again White can't save the knight. |
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| Dec-21-10 | | gmalino: Ok, what's this?
Black to play, material is even, Queens are of the board.
Blacks ws-bishop is hanging and it's black to move.
So starting with
25..... Bxf3+ (trades the hanging piece and gives check)
26.Nxf3 =
This doesn't seem to work.
But there is also the skewer of rooks to grill...
25..... Rxd2+ (much more forcing than Bxf3+)
26.Rxd2 Bxf3+
27.Kxf3 Bb4 (wins the quality and the game)
0-1 |
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Dec-21-10
 | | Sastre: <gmalino> The position is equal after 25...Rxd2+ 26.Rxd2 Bxf3+ 27.Kxf3 Bb4 28.Ree2 Bxd2 29.Rxd2. |
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| Dec-21-10 | | gmalino: Isn't my line winning as well?
Ok, it's not the best choice, but also winning.
<Phony Benoni>: "Tricky. There are a lot of targets in the White position, but the problem is finding which one to hit. As a lot of solvers probably will, I looked first at 25...Rxd2+ 26.Rxd2 Bb4 skewering the rooks. But that doesn't seem to lead to anything more than exchanges, <especially with the Bb7 hanging.>" --> Yes, but this can be handled by capture with check, isn't it? Looks like I'm the only one trying the skewer after taking two pieces with check, makes me wondering if I overlooked something elementary.... |
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| Dec-21-10 | | gmalino: <Sastre> Hmm! Right! Giving quality and taking quality leads to equality, isn't it? Thanks for opening my eyes once again! Sometimes I am too attracted by trading....working on that.... |
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| Dec-21-10 | | agb2002: Black has the bishop pair for a bishop and a knight. White threatens 26.Bxb7.
The rook on c2 and the knight are defenseless (attacked as many times as they are defended, at least) and White's bishop and knight can be captured with check. These facts suggest the double attack 25... Bb4: A) 26.Rxc8 Bxc8 27.Rc1 Rxd2+ and 28... Ba6 - + [B].
B) 26.Rb2 Rxd2+ 27.Rxd2 Bxf3+ 28.Kxf3 Bxd2 - + [B].
C) 26.Bxb7 Rxc2 followed by 27... Rdxd2 - + [R].
D) 26.Rec1 Bxf3+ 27.Kxf3 Rxc2 28.Rxc2 Rxd2 - + [N].
E) 26.Nc4 Bxf3+ 27.Kxf3 Bxe1 - + [R].
F) 26.Rc4 Rxd2+ 27.Kh3 Rxc4 28.bxc4 (28.Bxb7 Rcc2 - + [R]) Bxf3 - + [2B]. |
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| Dec-21-10 | | jussu: Embarrasing, but this took me about five minutes to find. |
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| Dec-21-10 | | jussu: <Sastre: <gmalino> The position is equal after 25...Rxd2+ 26.Rxd2 Bxf3+ 27.Kxf3 Bb4 28.Ree2 Bxd2 29.Rxd2.> My feeling is that black has at least some trouble drawing this. |
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| Dec-21-10 | | FrogC: It's a quiet move to which White has a couple of energetic-looking replies, which makes it a bit counter-intuitive. I saw it here but might well have missed it over the board. |
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| Dec-21-10 | | zb2cr: The tempting 25. ... Rd2+ just leads back to material equality. 25. ... Bb4 is the right way, eventually leading to the win of a piece for Black. <agb> has diligently worked out many variations and posted them above. |
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