Queen's Indian Accelerated
1. d4 Nf6 2. c4 b6
The Queen's Indian Accelerated is a chess opening classified as ECO A50, reached after 1. d4 Nf6 2. c4 b6. White is to move.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 2,050 times by this move order. White won 50%, 5% were drawn and Black won 45%. The most popular continuation is 3. Nc3 (74% of games).
Engine evaluation: +0.41 (Stockfish, depth 50; best line 3. f3 Nc6 4. Nc3 d5 5. Qa4 Qd7)
- ECO
- A50
- Moves
- 4 plies
- FEN
rnbqkb1r/p1pppppp/1p3n2/8/2PP4/8/PP2PPPP/RNBQKBNR w KQkq - 0 3- PGN
1. d4 Nf6 2. c4 b6
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 0-1499 | 324 | |
| 1500-1999 | 1,058 | |
| 2000+ | 668 | |
| All | 2,050 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 3. Nc3 | 1,510 (74%) | |
| 3. Nf3 | 297 (14%) | |
| 3. f3 | 62 (3%) | |
| 3. e3 | 57 (3%) | |
| 3. d5 | 31 (2%) | |
| 3. g3 | 24 (1%) | |
| 3. Bg5 | 24 (1%) | |
| 3. Bf4 | 18 (1%) |
Master games
4,766 over-the-board games are classified under this line (White 37%, draw 18%, Black 45%). The strongest:
- Reckless 0.10.0-dev-b5462f11 (3763) – Stockfish dev-20260318-d173a06 (3807) 1-0 · TCEC 29 Superfinal 2026 · 2026-04-12
- Stockfish dev-20260318-d173a06 (3807) – Reckless 0.10.0-dev-b5462f11 (3763) 1-0 · TCEC 29 Superfinal 2026 · 2026-04-12
- LCZero 0.33-dev-f6ec55c-BT4-6147500-it332 (3749) – Reckless 0.9.0-dev-b32e0895 (3741) 1/2-1/2 · TCEC 29 Premier 2026 · 2026-03-06
- Reckless 0.9.0-dev-b32e0895 (3741) – LCZero 0.33-dev-f6ec55c-BT4-6147500-it332 (3749) 1/2-1/2 · TCEC 29 Premier 2026 · 2026-03-03
- LCZero 0.31-dag-f7fb268-BT4-61 (3652) – Stockfish dev-20241208-cf10644 (3683) 1/2-1/2 · TCEC 27 Superfinal 2024 · 2024-12-20
Search all games of the Queen's Indian Accelerated and its sub-variations
Highest-rated Lichess games
- vistagusta (2847) – IM Kostik_Mostik (2912) 0-1 · 2026-09-06 · 180 + 0s
- NM Andrey11976 (2810) – onepoundrook (2916) 1/2-1/2 · 2026-09-04 · 180 + 0s
- Chess1Love0 (2787) – IM Kostik_Mostik (2916) 1-0 · 2026-09-07 · 180 + 0s
Comes from
Indian Defense: Normal Variation 1. d4 Nf6 2. c4
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.