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Sicilian Defence: Richter-Rauzer, 7.Qd2 a6 8.O-O-O Bd7 — Part 1 of 2

Leko–Morozevich, World Championship Mexico City 2007 · Tari–Carlsen, 8th Norway Chess 2020 · 6:24 · ECO B67

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In this video

Game 1: Peter Leko (2751) vs Alexander Morozevich (2758)

World Championship Mexico City 2007, 28 September 2007 · White won (1-0) · 33 moves

Click a move to jump the video to it. Dotted moves are the opening line the video is about.

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Key moments

  1. 9.f3The first move after the opening line0:38
  2. 16...a5The evaluation moves from +0.65 to +1.811:12
  3. 23...Qc5White stays more than two pawns ahead from here1:46
  4. 29...Qg1The evaluation moves from +3.34 to +5.762:16
  5. 31...d5The evaluation moves from +3.83 to +7.442:26
  6. 33.h5White wins after 33 moves2:34

Evaluation

Above the line, White is better; below it, Black. Scores are in pawns, capped at five either way.

Game 2: Aryan Tari (2633) vs Magnus Carlsen (2863)

8th Norway Chess 2020, 7 October 2020 · Black won (0-1) · 45 moves

Click a move to jump the video to it. Dotted moves are the opening line the video is about.

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Key moments

  1. 9.f4The first move after the opening line3:12
  2. 23.Nh5The evaluation moves from +1.55 to −0.924:18
  3. 30...Bxb2The evaluation moves from −3.69 to −1.704:55
  4. 35.Qxa6+Black stays more than two pawns ahead from here5:18
  5. 36.c3The evaluation moves from −2.25 to −5.505:22
  6. 45...Bc8Black wins after 45 moves6:10

Evaluation

Above the line, White is better; below it, Black. Scores are in pawns, capped at five either way.

About these games

White develops with Bg5, Qd2 and long castling, ready to play Bxf6 and leave Black with doubled f-pawns, while 7...a6 and 8...Bd7 keep Black's king in the centre and prepare queenside play with ...b5 or ...Rb8. After Bxf6 gxf6 Black has a damaged kingside but the bishop pair and a solid centre, and White aims to open lines with f4-f5.

Leko–Morozevich chose 9.f3 and 10.Be3, then 12.Nxc6 bxc6 and 15.Bxf6 gxf6, fixing Black's pawns. After 16.f4 White pushed 17.f5. The plan of 16...a5 cost Black time, and the score rose from +0.65 to +1.81. Black traded rooks on d1, but after 23...Qc5 White stayed more than two pawns ahead (+2.25). Morozevich's ...h4 opened the h-file for White instead: 28.Rxh4 won a pawn, 29...Qg1 took the score from +3.34 to +5.76, and after 30.Qh8+ and 31...d5 (+3.83 to +7.44) the h-pawn decided. White won after 33.h5.

Tari–Carlsen followed the sharper 9.f4 and 10.Nf3, with 10...b5, 11.Bxf6 gxf6 and 13...O-O-O, so Black's king went queenside instead of staying central. Carlsen broke with 17...d5; White led by +1.01 after 18...exf5, but 23.Nh5 swung it from +1.55 to −0.92. After 27...Bxd4 and 30...Bxb2 the bishops and open files struck at White's king. From 35.Qxa6+ Black stayed more than two pawns ahead, 36.c3 moved the score from −2.25 to −5.50, and Black's queen chased the king up the board. Black won after 45...Bc8.

Chapters

  1. 0:00Introduction and the opening line
  2. 0:10Game 1: Leko vs Morozevich, World Championship Mexico City 2007
  3. 2:43Game 2: Tari vs Carlsen, 8th Norway Chess 2020

The opening line

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7

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