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Petroff Defence: Classical Attack, Marshall

Kasparov–Shirov, Corus Wijk aan Zee 2001 · Aronian–Nepomniachtchi, Sinquefield Cup 2022 · 7:58 · ECO C42

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In this video

Game 1: Garry Kasparov (2849) vs Alexei Shirov (2718)

Corus Wijk aan Zee 2001, 23 January 2001 · White won (1-0) · 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. 7.O-OThe first move after the opening line0:32
  2. 15...Bxe5The evaluation moves from +0.50 to +2.26, and White stays more than two pawns ahead from here1:06
  3. 31...Rxc2The queens come off2:26
  4. 42...Kf6The evaluation moves from +5.21 to +7.183:22
  5. 45.e7White wins after 45 moves3:34

Evaluation

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

Game 2: Levon Aronian (2759) vs Ian Nepomniachtchi (2792)

Sinquefield Cup 2022, 10 September 2022 · Black won (0-1) · 52 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. 7.O-OThe first move after the opening line4:06
  2. 31...Kg7The evaluation moves from −0.46 to +0.916:00
  3. 45.g4The evaluation moves from −1.97 to −5.98, and Black stays more than two pawns ahead from here7:08
  4. 49.Kh1The evaluation moves from −6.93 to −9.307:28
  5. 52...Qf1Black wins after 52 moves7:45

Evaluation

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

About these games

Black copies White's first moves with 6...Bd6, keeps the knight on e4 and develops quickly. White aims to dislodge that knight and open the centre with 8.c4, which leaves Black with an isolated or advanced d-pawn depending on how the c- and d-pawns are exchanged.

Kasparov–Shirov followed 8.c4 c6 9.Qc2 Na6, and White planted a knight with 11.Ne5. After 12.cxd5 cxd5 13.Nc3 Nxc3 14.bxc3 f4, Black chose 15...Bxe5, and 16.fxe5 gave White a pawn on e5 and an open f-file. The evaluation went from +0.50 to +2.26 and stayed above two pawns. White doubled rooks on the f-file, swapped bishops on g6 and with 28.Bxc7 and 29.Rxg6 won material; Black gave up the queen with 30...Qxd4+ and took White's queen back with 31...Rxc2 (+3.74). In the rook ending White pushed the e- and d-pawns, 42...Kf6 took the score to +7.18, and White won after 45.e7.

Aronian–Nepomniachtchi went 9.Re1 Bf5, and White locked the queenside with 11.c5 instead of opening lines. Black supported the e4 knight with 12...f5, gave up both bishops for knights on f3 and g3, and took the d4 pawn with 21...Qxd4 (−2.32). White fought back to +0.91 after 31...Kg7, but Black's rooks and queen turned on White's king. From 45.g4 Black stayed more than two pawns ahead, 46.Qh8+ (−6.96) and 49.Kh1 (−9.30) worsened White's position, and Black won after 52...Qf1. Where Game 1 was a White bind in the centre, here Black won material and attacked.

Chapters

  1. 0:00Introduction and the opening line
  2. 0:10Game 1: Kasparov vs Shirov, Corus Wijk aan Zee 2001
  3. 3:43Game 2: Aronian vs Nepomniachtchi, Sinquefield Cup 2022

The opening line

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6

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