A40

Slav Indian: Kudischewitsch Gambit

Chess diagram: Slav Indian: Kudischewitsch Gambit after 3…b5

Type a move and press Enter: e4, Nf3, O-O, or from and to squares like g1f3 (e7e8q to promote). The board is also played with the mouse.

Play any move on the board to explore from there, or step through the line with ‹ › and the arrow keys.

Statistics from Lichess

3,016 games: White 48.8% / Draw 6.1% / Black 45.1%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
1,2831,283
617617
382382
276276
208208
7474
5050
3535

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 30, 2026

Engine evaluation

+0.32 White is slightly better

Best play: 4. c5 d6 5. cxd6 exd6 6. a4 bxa4 7. Qxa4 Be7 8. e3 O-O

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

Overview

Slav Indian: Kudischewitsch Gambit (ECO A40, Flank Openings) is a gambit in the Queen's Pawn Game, reached after 1. d4 c6 2. Nf3 Nf6 3. c4 b5 (3 moves).

In 3,016 rated Lichess games between players rated 1600 to 2500, White won 48.8%, Black 45.1% and 6.1% were drawn. White's most played move here is 4. cxb5, in 43% of those games.

Written from the Lichess opening list and explorer. Know this line well? Write about it.

Write a description or report a mistake
What would you like to send?

Markdown supported (headings ###, bold, lists, links). Submissions are reviewed before publishing.

How to play against the Slav Indian: Kudischewitsch Gambit

4. c5 scores best for White: 57.0%, with White winning 53.8% and Black 39.9% of 208 games. The most played, 4. cxb5, scores 52.1% in 1,283 games, and 4. Nc3 scores lowest: 45.0%. Stockfish's first choice is also 4. c5.

Main answers: those played in at least 5% of these games. Score: White's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Cite this page

Caissa Codex. “Slav Indian: Kudischewitsch Gambit (A40)”. Lichess data as of 30 Oct 2026. https://chesscodex.org/openings/slav-indian-kudischewitsch-gambit