chessflex
Moscow · Mar 1963
Petrosian 12½–9½ Botvinnik
Petrosian won 12½–9½.
The score gap, game by game: up is Petrosian.
The move that cost the match's loser the most, in a game they lost.
Botvinnik v Petrosian · 0–1
27. Bg1 by Botvinnik: chances 55% → 38%
The coach: Bxd6 instead (the arrow) — with it, it was about level.
Replay it: Study › Follow a live game › World Championship 1963: Petrosian v Botvinnik › Game 18
Each line is White's chances move by move, as the coach saw them; above the middle, White is better. The mark is the costliest move.
40 moves · d4 Nf6 c4 e6 · accuracy Petrosian 87.4, Botvinnik 91.5
Costliest move: 32. Qh2 (Petrosian, 31% → 14%)
35 moves · d4 d5 c4 dxc4 · accuracy Botvinnik 91.7, Petrosian 92.5
No move cost more than 12%.
86 moves · d4 Nf6 Nf3 e6 · accuracy Petrosian 92.4, Botvinnik 92.4
Costliest move: 77. Ke7 (Petrosian, 63% → 40%)
24 moves · c4 c5 Nc3 Nc6 · accuracy Botvinnik 89.7, Petrosian 90.9
No move cost more than 12%.
48 moves · c4 g6 d4 Nf6 · accuracy Petrosian 93.7, Botvinnik 92.2
No move cost more than 12%.
27 moves · d4 d5 c4 dxc4 · accuracy Botvinnik 93.3, Petrosian 93.8
No move cost more than 12%.
52 moves · c4 g6 Nf3 Bg7 · accuracy Petrosian 94.9, Botvinnik 92.2
Costliest move: 23... Be8 (Botvinnik, 37% → 21%)
55 moves · d4 d5 c4 dxc4 · accuracy Botvinnik 93.1, Petrosian 94.6
No move cost more than 12%.
55 moves · c4 e6 g3 d5 · accuracy Petrosian 91.7, Botvinnik 90.6
No move cost more than 12%.
43 moves · d4 d5 c4 dxc4 · accuracy Botvinnik 94.4, Petrosian 95.2
No move cost more than 12%.
41 moves · c4 c5 Nf3 Nf6 · accuracy Petrosian 90.5, Botvinnik 90.5
Costliest move: 26. Rd2 (Petrosian, 53% → 36%)
53 moves · d4 d5 c4 e6 · accuracy Botvinnik 91.3, Petrosian 92.8
Costliest move: 39. Rff3 (Botvinnik, 50% → 37%)
54 moves · d4 Nf6 c4 e6 · accuracy Petrosian 93.6, Botvinnik 92.9
Costliest move: 37... a5 (Botvinnik, 56% → 37%)
57 moves · d4 d5 c4 e6 · accuracy Botvinnik 92.7, Petrosian 91.5
No move cost more than 12%.
58 moves · d4 Nf6 c4 g6 · accuracy Petrosian 93.4, Botvinnik 92.5
Costliest move: 4. Qb3 (Petrosian, 56% → 43%)
54 moves · d4 d5 c4 dxc4 · accuracy Botvinnik 92.3, Petrosian 92.5
No move cost more than 12%.
39 moves · d4 Nf6 c4 e6 · accuracy Petrosian 92.6, Botvinnik 91.7
No move cost more than 12%.
61 moves · d4 d5 c4 e6 · accuracy Botvinnik 87.0, Petrosian 88.6
Costliest move: 27. Bg1 (Botvinnik, 55% → 38%)
66 moves · c4 Nf6 Nc3 e6 · accuracy Petrosian 93.5, Botvinnik 91.5
Costliest move: 64... Bd6 (Botvinnik, 25% → 3%)
21 moves · d4 d5 c4 dxc4 · accuracy Botvinnik 90.8, Petrosian 93.4
No move cost more than 12%.
10 moves · c4 Nf6 Nf3 g6 · accuracy Petrosian 93.4, Botvinnik 93.8
No move cost more than 12%.
10 moves · d4 d5 c4 dxc4 · accuracy Botvinnik 91.3, Petrosian 92.4
No move cost more than 12%.
Every game of this match is in ChessFlex. Replay it move by move with the coach's three best moves, guess each of Petrosian's moves before you see them, ask the coach why, or take the seat at any moment and play it out against the bots.
In the app: Study › Follow a live game › World Championship 1963: Petrosian v Botvinnik › Game 1
Part of Study in ChessFlex: one purchase unlocks the coach, Follow a live game and all 53 title matches (on iPhone, try Study free first). Playing the bots is free, with no account and no ads.