Kavalek on Huffington: Chess Champions and Their Queens (2)

by ChessBase
2/1/2017 – In part one of his extensive look at queen sacrifices in top level chess GM Lubomir Kavalek discussed the final move of the World Championship match Carlsen vs Karjakin, Wesley So's queen sac plan against Topalov, and Nezhmedtinov’s famous 12.Qxf6!! sacrifice. Today he shows us Timman's failed queen sacrifice against him, Kavalek, and Caruana's successful 19.Qxf6!! sac against Nakamura at the London Chess Classic. There's a lot to learn and enjoy.
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Chess Champions and Their Queens (2)

By GM Lubomir Kavalek

Timman was under the influence of Mikhail Botvinnik’s advice to publish his analysis and to create an analytical debate. He found space in the Dutch magazine Schaakbuletin, founded by Wim Andriessen in 1968.

It was a year of great hopes and disappointments in Czechoslovakia. The Prague Spring, when the Czechs found the freedom to think, speak and write, impacted my chess and I started to have good, consistent results. I finished narrowly behind the winners in Sarajevo, won the all-time strongest Czechoslovakian championship and was able to stay in step with two legends: I won in Amsterdam ahead of Bronstein, but the former world champion Vassily Smyslov edged me in Polanica Zdroj. During the second tournament, the Soviet-led Warsaw pact armies invaded Czechoslovakia and in September I left the country for good.

In November 1968, I won in the Hague, playing Timman for the first time. He was 17, an emerging chess master with plenty of love for the game. I watched his progress as chessplayer and writer with interest. In 1975, when he advertised his queen sacrifice in his writing, he was already a solid grandmaster getting stronger by the day.

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12.Bh4?! This retreat leads to a Queen sacrifice. Discouraged by this game, Timman later in the tournament tried 12.f5 e5 13.Nb3 Bd7 14.Be3! against the Dane Svend Hamman. He won the fight for the control of the d5 square and booked a victory in 29 moves. 12...e5 13.Nf5 g6!?N
A novelty at that time. Walter Browne against Timman (Wijk aan Zee 1975 and later Lajos Portisch against Planinc (Ljubljana-Portoroz 1975) played 13...Bxf5 and both lost. After the text move White is forced to sacrifice his Queen. Of course, Timman knew that I knew about this move, since we briefly discussed it together in Wijk aan Zee, but we did not reach a clear conclusion. Reaching this position, I remembered my conversation with my friend Milan Vukcevich at the U.S. Championship in Oberlin. Milan tried to convince me that the Queen sacrifice is incorrect. 14.Nxe7?! The Queen sacrifice is tempting since in the follow up more white pieces are being offered. Some computers suggest 14.Rhe1 gxf5 15.exf5 Kf8 14...Bxh3 15.Bxf6 Be6! Black needs to control the square d5. 15...Bg4? 16.Ned5± 16.f5 Rf8!? Stronger than 16...gxf5 17.exf5 Bd7 18.Be4 Rf8 19.Ned5 Nxd5 20.Nxd5 Qa5 21.Nc3= 17.Bb5+?! This looks pretty, but grabbing the Bishop first was more prudent: 17.fxe6! fxe6 18.Bb5+! axb5!? 19.Nxb5 Qc5 20.Nxd6+ Qxd6 21.Rxd6 Nc4! Black is better, but White can still fight. 17...Bd7! The best. 17...axb5?! 18.Nxb5 Qxe7 19.Bxe7 Kxe7 20.fxe6 Nc4= 18.Ned5 Nxd5 19.Nxd5 This is still Timman's analysis. Qa5! This should win for Black, but it is not simple. Timman wrote that after 19...Qc5? 20.b4! White wins, for example Qc8 21.Nb6+- Also after 19...Qb8 20.Bxd7+ Kxd7 21.Rd3 Black's heavy pieces are somehow paralyzed and the chances are unclear. 20.Bxd7+ Kxd7 The material is reduced and Black has more light squares for his Queen. 21.a4 Played after about 15 minutes. White is threatening to win the queen with 22.b4 and Black must allow his Queenside to be tied up. Qc5! 22.b4 Qc6 23.a5 Timman was eager to create an outpost on b6, but it gives Black a time to counter. Black should be winning also after 23.Rhf1 Rac8 24.Rd2 Rg8-+ 23...gxf5! 24.exf5 Rg8
Black finally found an open file for the Rook. 25.Nb6+ Ke8! Leaving the Rook on a8 unprotected surprised Timman. He was counting mainly on 25... Kc7, but the text move is stronger: Black begins offensive operations. White has chances to fight after 25...Kc7 26.Nd5+ Kb8? 27.Ne7 Qc3 27...Qxg2 28.Nxg8 Qxg8 29.Rxd6 Ka7= 28.Nxg8 Qa3+ 29.Kd2 Qxb4+ 30.Kc1= 26.g3 The fans did not like this move and preferred 26.g4!? but Black has a decisive attack after Qc3! 27.Nxa8 27.h3 Rb8-+ 27...Qa3+ 28.Kd2 Rxg4-+ Black also wins after 26.Nxa8? Rxg2 27.Rd2 Rxd2 28.Kxd2 Qxh1-+ Or after 26.Rhg1 Rg4 27.Nxa8 Rc4 28.Rd2 Qa4 wins. 26...Rg4!-+
Not wasting time to escape with the Rook on a8. The Queen and the Rook work harmoniously together. 27.Rhe1 After 27.Nxa8 Rc4 the white king is defenseless, although Black has to be careful: 28.Rhe1 Rxc2+ 29.Kb1 Qc4! But not 29...Qc3? 30.Rxe5+! Kf8 31.Re8+ Kxe8 32.Bxc3+- 30.Rxe5+ Kf8 and Black mates soon. 27...Rb8 28.Bxe5 Equivalent to resignation, but White really has not much choice. 28.Rxd6 Qxd6 29.Bxe5 Qxb4 30.Bc3+ Qe4-+ 28.Rd3 Rxb4 29.Bxe5 dxe5 30.Rxe5+ Kf8 31.Nd7+ Kg7 32.Nxb8 Qg2 33.Nd7 Rc4-+ 28...dxe5 29.Rxe5+ Kf8 30.Nd7+ Kg7 31.f6+ Kh7 32.Nxb8 Qc3! 33.Rdd5 33.Re7 Qa1+ 34.Kd2 Rd4+-+ 33...Rd4! The final touch, threatening 34...Qa1 mate. Black now gobbles up both Rooks after 33...Rd4! 34.Rxd4 Qa1+ 35.Kd2 Qxd4+ 36.Kc1 Qxe5-+ 0–1
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WhiteEloWBlackEloBResYearECOEventRnd
Timman,J-Kavalek,L-0–11975B99Amsterdam

In 1984, with the injection of money from the publisher Elsevier, Andriessen turned his magazine into an English publication New In Chess and Timman became editor-in-chief.

Timman’s sacrifice didn’t turn out as he hoped. Today, it could have been checked by analytical engines beforehand. I don’t think Timman considered computers friendly creatures. He was proud to invent ideas on his own.

But computers are here to stay as part of hybrid man-machine preparation. The entertaining queen sacrifice in the game Caruana-Nakamura, from London last month, is a good example. Nakamura tweaked computer analysis, but it backfired. Caruana’s two minor pieces became stronger than the queen.

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1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 h6 8.Bh4 Qb6 9.a3 Be7 10.Bf2 Qc7 11.Qf3 Nbd7 12.0-0-0 b5 13.g4 g5 14.h4 gxf4 15.Be2 b4? Nakamura plays a new move, injecting a pawn sacrifice. After the immediate 15...Ne5 16.Qxf4 Nexg4 17.Bxg4 e5 he wants to prevent 18.Nd5!? The Queen sacrifice 18.Qxf6 Bxf6 19.Nd5 Qd8 20.Nf5 is possible and leads to a roughly equal game. It has been known for several months. 18...Nxd5 19.Qf3!
with White's edge, for example 19...Bxg4 20.Qxg4 Nf6 21.Qf3 exd4 22.Bxd4± 16.axb4 Ne5 17.Qxf4 Nexg4 18.Bxg4 e5 19.Qxf6‼ The Queen sacrifice is the only right way to continue and Caruana gets an extra pawn. After 19.Nd5? Nxd5 20.Qf3 Nxb4 Black has an almost decisive advantage. 19...Bxf6 20.Nd5 Qd8
21.Nf5! This powerful plug, threatening 22.Bb6, is the best move. Two minor pieces for the Queen provide great compensation. White dominates the light squares and open files. There are several variations supporting this view. Nakamura tricked himself or the computer did it. In either case it was a sad ending for his opening preparation. Rb8 After 21...Bxf5 22.Bxf5 Rb8 White can create dangerous threats by marching his c-pawn: 23.c4 0-0 24.c5!+- 22.Nxf6+ Qxf6 23.Rxd6 A human touch. The computers prefer the more forcing 23.Nxd6+ Ke7 23...Kf8 24.Bf5+- 24.Bc5! Qf4+ 24...Bxg4 25.Nb5+ Ke6 26.Nc7# 25.Kb1 Qxg4 26.Nxc8+ Ke8 27.Nd6+ Ke7 28.Nf5+ Ke8 29.Rhg1 threatening 30.Ng7+, White should win. 23...Be6 24.Rhd1 0-0
After 24...Rxb4 25.Rxe6+ fxe6 26.Bh5+ Kf8 27.Bc5+ wins. 25.h5! A beautiful move, preparing 26. Bh4 to chase the black Queen to the corner square h8. Qg5+ 25...Rxb4 26.Bh4 Bxf5 27.Bxf6 Bxg4 28.Re1± 26.Be3 Qf6 27.Nxh6+ Kh8 28.Bf5 Qe7?! Loses on the spot, but other moves do not save Black either: 28...Qh4 29.Rg1 Qxh5 30.Rdd1 Qf3 31.Rde1+- 28...Rfe8 29.Rg1+- 29.b5?! The immediate 29.Nxf7+! Qxf7 30.Rxe6 would have been more powerful and quicker. 29...Qe8 30.Nxf7+ Rxf7 31.Rxe6 Qxb5 32.Rh6+ 32.Rh6+ Kg7 33.Rg1+ Kf8 34.Rh8+ Ke7 35.Rxb8 Qxb8 36.Bc5++- 1–0
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WhiteEloWBlackEloBResYearECOEventRnd
Caruana,F2823Nakamura,H27791–02016B968th London Classic

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Original column here – Copyright Huffington Post

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