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Subject: Re: (OT) Slav Defense = "A Promising Pawn Sacrifice" [GM Kavalek]

Author: John Merlino

Date: 10:26:29 05/24/04

Go up one level in this thread


On May 24, 2004 at 10:02:28, José Antônio Fabiano Mendes wrote:

>Please see = http://www.washingtonpost.com/wp-dyn/articles/A50645-2004May23.html
>
>Carlsen - Nielsen = 12th Sigeman tournament, May 2004
>
>1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Nh4!? (Former world champion
>Alexander Alekhine gave credit for this knight move to Orla Hermann Krause, a
>Danish analyst who found many new ideas in the Slav defense in the 1920s. White
>wastes time to eliminate the ominous black's queen bishop at all costs. The
>leading alternative today is 6.Ne5.) 6...Bg4 (In the game Alekhine-Stolz, Bled
>1931, black played 6...e6, which Alekhine considered natural and good. He wrote:
>"White will enjoy a pair of bishops [after 7.Nxf5 exf5 8.e3], but as long as
>black is able to control the central squares he should not have much to fear."
>
>Most common is the retreat 6...Bc8. Alekhine advocated 7.e3 e5 8.Bxc4 exd4
>9.exd4 "with slightly better prospects for white." Garry Kasparov picked up this
>line almost 60 years later but without much success. More interesting is the
>piece sacrifice 7.e4 e5 8.Bxc4 exd4 9.Nf3!?, for example 9...dxc3 10.Bxf7+ Ke7
>11.Qb3 with messy prospects.)
>
>7.h3 (Black can meet 7.f3 with 7...Bd7, for example 8.e4 e6 9.Bxc4 [9.g3 b5!]
>Nxe4! with an edge.) 7...Bh5 8.g4 Bg6 9.Nxg6 hxg6 10.e3 e6 11.Bxc4 Bb4 12.Bd2 (A
>useful developing move. 12.Qf3 was played before, but it may not be the best
>square for the queen.) 12...Nbd7 13.g5 (Carlsen decides to take the center at
>the expense of overextended pawns.) 13...Nd5 14.e4 N5b6 15.Bb3 a5 16.Qe2 c5!?
>(The other break 16...e5?! was played in Carlsen- Andriasian in Budva,
>Montenegro, last year. After 17.dxe5 Nxe5 18.0-0-0 Nd3+ 19.Kb1 Nc5 20.Nb5!? Nxb3
>21.Bxb4 axb4 22.Rxd8+ Rxd8 instead of 23.Nc7+?, white should have played
>23.Rd1!, for example 23...cxb5 24.Rxd8+ Kxd8 25.Qd1+; or 23..Ke7 24.Nd6! and
>white wins.)
>
>17.d5 c4!? (A promising pawn sacrifice, giving black plenty of play on the weak
>light squares.)

Here's the position:

[D]r2qk2r/1p1n1pp1/1n2p1p1/p1pP2P1/Pb2P3/1BN4P/1P1BQP2/R3K2R b KQkq - 0 17

CM_SKR on an AMD 2500 likes c4 right away. It also says to NOT accept the
sacrifice:

Time	Depth	Score	Positions	Moves
0:00	1/3	0.14	1329		17...c4 18.Bxc4 Nxc4 19.Qxc4 Rc8
					20.Qd3
0:00	1/4	0.05	3785		17...c4 18.dxe6 cxb3 19.exd7+ Qxd7
					20.Qb5 Bxc3 21.Bxc3 Qxb5 22.axb5
0:00	1/5	0.00	15177		17...c4 18.Bxc4 Nxc4 19.Qxc4 Rc8
					20.Qd4 O-O 21.O-O-O
0:00	1/6	0.00	65033		17...c4 18.dxe6 cxb3 19.exd7+ Qxd7
					20.O-O-O O-O 21.Bf4
0:00	1/7	0.02	136091		17...c4 18.Bxc4 Nxc4 19.Qxc4 Rc8
					20.Qd4 e5 21.Qd3 O-O 22.O-O-O
0:02	1/8	-0.04	473441		17...c4 18.Bc2 Nc5 19.Be3 O-O 20.O-O-O
					Bxc3 21.bxc3 Qc7 22.d6
0:04	1/9	-0.04	1014476		17...c4 18.Bc2 O-O 19.dxe6 fxe6
					20.O-O-O Bxc3 21.bxc3 Nc5 22.f4 Qc7
0:09	1/10	-0.07	2168894		17...c4 18.Bc2 O-O 19.dxe6 fxe6
					20.f4 e5 21.Rf1 Qc7 22.Qh2 Nc5
0:23	1/11	-0.09	5286893		17...c4 18.Bc2 O-O 19.dxe6 fxe6
					20.O-O-O Bxc3 21.Bxc3 Qxg5+ 22.Kb1
					Qh4 23.Bd4 e5 24.Be3
1:08	1/12	-0.17	15714791	17...c4 18.Bc2 O-O 19.dxe6 fxe6
					20.Be3 Qc7 21.O-O-O Bxc3 22.bxc3
					Nc5 23.f4 Rad8 24.Rhf1
2:55	1/13	-0.09	41370521	17...c4 18.Bc2 Nc5 19.O-O-O Bxc3
					20.Bxc3 Qxg5+ 21.Kb1 O-O 22.Bd4
					Rac8 23.dxe6 fxe6 24.Be3 Qe5
8:39	2/14	-0.01	125666559	17...c4 18.Bc2 exd5 19.exd5+ Kf8
					20.O-O-O Bxc3 21.bxc3 Nc5 22.Bf4
					Kg8 23.h4 Ncxa4 24.Qe3 Nxd5 25.Bxa4
					Nxe3 26.Rxd8+ Rxd8 27.Bxe3

jm



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