All subsections
Openings
- Chess Atlas Subsections
- VOL. I • Chess HistoryFrom Chaturanga to Neural Engines
- VOL. II • Classic ChessPieces, Notation & Rules
- VOL. III • Legendary PlayersPantheon of Chess Immortals
- VOL. IV • Great GamesInteractive game studies
- VOL. V • OpeningsOriginal CAISSORA Opening Articles
- VOL. VI • Tactics & StrategyForks, Pins & Board Geometry
ECO E12Side: Black
Queen's Indian Defense: Petrosian Variation
- Semi-closed games
- Fianchetto
- Positional play
- Hypermodern
Interactive Opening Board
4.a3
♚
Black
a
b
c
d
e
f
g
h
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
a
b
c
d
e
f
g
h
♔
White
4.a3
Speed:
Moves
(7 plies • 4 moves)4.a3Defining moveTabiya
- 1–4moves
- 1.
- 2.
- 3.
- 4.
Legends who played it
Tigran Petrosianas White · Named after the player
Games in the Atlas
No games in the Atlas yet