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Dec-13-11
 | | doubledrooks: Like others, I found this to be more difficult than the typical Tuesday fare. I finally voted for 31...Rxc3 32. Bxc3 Qg5+ 34. Qg3 Qe3+ 35. Qf2 Qxc3 with a two-pawn advantage. Now if 36. Rf1, 36...Rg5+ is crushing. |
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Dec-13-11
 | | agb2002: Black has two pawns and a rook for a bishop and a knight. White's DSB controls g5. Hence, 30... Rxc3 31.Bxc3 (otherwise White is an exchange and two pawns down) 31... Qb6+ (31... Qg5+ 32.Qg3; 31... Rg5+ 32.Kf1 is not clear or at least not so clear to me) A) 32.Qf2 Rg5+ 33.Kf1 Qb5+ 34.Ke1 Rg1+ 35.Kd2 (35.Qxg1 Qe2#) 35... Rg2 - + [Q+2P vs R+B]. B) 32.Kf1 Rg5 33.Qg3 Rxg3 34.hxg3 Qe3 is crushing. |
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Dec-13-11
 | | chrisowen: I saw for Beliavsky it pin knowledge near con and it rook c3 giving g5 white in a;; sort of trouble after deploy it f1 king, left it's up heres right it queen drop slide across ie he bulldoze light. B5 in valle carte in it a hole heap g4 on e4 it tips in balance, allow fork Kuprechik d4 complex in queen finish to see neck king scupper in flight queen. |
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Dec-13-11
| | doubledrooks: <The Long Diagonal> wrote: <<FSR> <30...Rxc3! 31.Bxc3 Qg5+ 32.Qg3 (32.Kf2 Qg2+ 33.Ke3 Rxe4+ )>
I calculated the same line... but after 32.Kf2!? Qg2+ 33.Ke3 Rxe4+ 34.Kd3 Rxe1 35.Rxe1 white, despite having lost his queen, has a nasty mate threat. 35. .. Bc6 seems to be the only move that saves black.> 35...Kf8 also might save Black. For example: 36. Bb4+ Kg7 37. Bc3+ Kh6 (f6 might also work) 38. Bd2+ Kh5 39. Bxf7 Qxh2 |
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Dec-13-11
 | | LIFE Master AJ: 31...Rxc3.
But no way is it easy ... |
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Dec-13-11
| | LIFE Master AJ: Alexander G. Beliavsky (2570) - Viktor Kupreichik (2480)
[E59]
URS-ch sf Minsk, 1983
[A.J.G.]
POTD / Tuesday / Dec. 13th, 2011
Black to move, 31 ... '?'
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 0-0 5.Bd3 c5 6.Nf3 d5 7.0-0 Nc6 8.a3 Bxc3 9.bxc3 Qc7 10.Qc2 dxc4 11.Bxc4 e5 12.Ba2 e4 13.Ng5 Bf5 14.f3 Rae8 15.g4 Bg6 16.f4 Nxg4 17.f5 Bh5 18.Rf4 cxd4 19.cxd4 Qd8 20.Nxe4 Nxd4 21.Qg2 Ne5 22.Nc3 Ndf3+ 23.Kh1 Nd3 24.f6 g6 25.Rxf3 Ne1 26.Qg3 Bxf3+ 27.Kg1 Qxf6 28.Qxe1 Re5 29.e4 Rc8 30.Bd2 Rxc3 [30...Rxc3!! 31.Bxc3 Qb6+! 32.Qf2T (RR32.Kf1 Rxe4 33.Qd2 Qa6+! 34.Kf2 Re2+ 35.Kxf3 Rxd2 36.Bxd2 Qf6+ 37.Ke4 Qxa1  ) 32...Rg5+! 33.Kf1 Qa6+! 34.Ke1 Qd3 35.Rc1!? Rg1+! 36.Qxg1 Qe2#] 0-1
Happy Birthday, Ailene ... my daughter turns 15 today. :) |
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Dec-13-11
| | LIFE Master AJ: Above - was analysis with Fritz. |
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| Dec-13-11 | | Nemesistic: As always Andrew! |
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| Dec-13-11 | | newton296: < FSR: 30...Rxc3! 31.Bxc3 Qg5+ 32.Qg3 (32.Kf2 Qg2+ 33.Ke3 Rxe4+ ) Qe3+ 33.Kf1 (33.Qf2 Rg5+ 34.Kf1 Qd3+ 35.Ke1 Qxc3+ mops up) Qxc3 and Black has a winning advantage - but I probably missed something better.> found the same rook sac line ! but it seemed pretty tricky to me! took me a good 5 minutes to work this one out. |
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| Dec-13-11 | | WBP: how about 30 Rxc3 31 Bxc3 Rg5+, with the following variations:
32 Kf2 Qh4+
if 33 Kxf3, then 33...Qg4#
if 33 Ke2, then ...Qxe3#
32 Kf1, then 32 ...Qa3 wins the house
32 Qg3 Rxg3+ 33 hxg3 Qxc3, with a huge advantage. I'm doing this from the diagram, so maybe I'm issing something... |
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Dec-13-11
 | | Penguincw: An exchange sac in exchange for deflection. Wait what? |
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| Dec-13-11 | | BOSTER: If after the opening, without development all pieces, you brave advance the pawns in front of enemy king ,leaving own king without shield (moves 14-17 : f3,g4,f4,f5) , and white pieces even don't think about white king, why should we be surprised that about 10 moves later the white king's side reminds the bare desert where only innocent h2 pawn is dancing around naked king. Such positio is not easy to defend. |
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| Dec-13-11 | | WBP: On my above analysis, if after 32...Qh4 + (in that variation), white plays 33 Kf1 (which I missed, then 33...Qxh2 seems to do the trick, no? |
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| Dec-13-11 | | cydmd: Surely the lines from Fritz and Houdini engines are the best. But maybe the line seen by Kupreichik that made him resign is simpler like this:
31.Bxc3 Qg6+ 32.Qg3 (32.Kf1?? Qg2# or 32.Kf2 Qg2+ 33.Ke3 Rxe4+) Qe3+ 33.Qf2 Rg3+ 34.Kf1(forced) Qd3+ 35.Ke1(forced) Rg1+! 36.Qxg1(forced) Qe2# But the best answer to 32... Qe3+ is 33.Kf1. Then
33... Qxc3 (33... Rg6?? 34.Qb8#) 34.Rd1 Rxe4 (threatens 35.Be2+ winning) And Black with 3 pawns ahead and all of its pieces pointing to White's king makes the position hopeless for White. I didn't check those lines and maybe I'm wrong. But I tried to find a simple reasoning for Kupreichik's resignation. |
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| Dec-13-11 | | bischopper: 
click for larger viewhite to play
from <bischopper> to <hector> for you this is easy or not say me how much time you need... |
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| Dec-13-11 | | morfishine: <sevenseaman> Thanks for looking! I underestimated the strength of <34...Bg2+> |
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| Dec-13-11 | | JohnAnthony: I looked at 31...rg5 also. Anyone find anything wrong with that line? |
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| Dec-13-11 | | WBP: But isn't 31...Rg5+ stronger than 31...Qg5  -see my analisis above...(what am I missing?) |
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| Dec-13-11 | | WBP: And in variation 32 Kf1, I obviously meant 32...Qa6+ |
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| Dec-13-11 | | mrizal103: 31...rg5, 32.kf1 bg2 33.kg1 bh3 34. kh1 Q+ |
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| Dec-13-11 | | WBP: ignore my comments above--after 32 Kf1, 32...Qa6 does NOT "win the house," as white has 33 Kf2! |
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| Dec-13-11 | | stst: late...can only drum up this somewhat tedious sequence:
30.... RxN
31.BxR Qg5+
32.Kf2 Qg2+
33.Ke3 RxP+
34.Kd3 RxQ
35.RxR QxB
and Bk is ahead both in material and position. |
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| Dec-14-11 | | jackalope: It's Tuesday so I must be missing something "easy" - best I can find is Black using White's exposed king to regain material. Black is up 2 pawns and an exchange but down a minor piece. I looked at <30. ... Rg5+> but after <31. Kf2> I can't find a good continuation for Black. So, the only other candidate move I see is <30. ... Rxc3> which leads to: <31. Bxc3 Qg5+>
<32. Kf1?? Qg2#>
<32. Kf2 Qg2+ 33. Ke3 Rxe4 34. Kd3 RxQe1 35. Rxe1 Bc6> to guard against <36. Re8#> Black is up 3 pawns, White has lost his queen but has R+2B vs Q+B. This might be White's best alternative. <32. Qg3> White would love to exchange queens but Black has other ideas -
<32. ... Qe3+ 33. Kf1 Qxc3 threatening the rook on a1> Now Black has the clear advantage (up 2 pawns), and can safely trade away material. <34. Re1 Rxe4 35. Rxe4 Qd3+ 36. Kf2 Bxe4 37. Qxd3 Bxd3> And White is up 3 pawns. Now to see if there is an "easy" solution... |
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| Dec-14-11 | | jackalope: I don't feel so bad now - I see others struggled with this as well. |
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| Dec-14-11 | | M.Hassan: "Easy" Black to play 30....?
Black has a Rook+2 pawns for a Bishop and a knight which means that black is slightly ahead.I am sure many players realize that if black enters c1h6 diagonal, he can start a deadly attack. that diagonal is guarded by White's DSB, therefore: 30..............Rxc3
31.Bxc3 Qg5+
32.Kf2 Qg2+
33.Ke3 Rxe4+
34.Kd3 Rxe1
35.Rxe1 Bc6
And black is stronger in material and position
If Bishop declines the Rook, things will not be to White's advantage: 30............Rxc3
31.Be3 Rxe4
Now Black Queen can not take the Rook on c3 and White's DSB is pinned and will eventually be taken and White looses more material. |
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