A40

Kangaroo Defense

Chess diagram: Kangaroo Defense after 2…Bb4+

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Statistics from Lichess

568,172 games: White 52.4% / Draw 5.2% / Black 42.3%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
Keres Defense, Transpositional Variation 294,703295K
240,641241K
32,54133K
287287

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Nov 1, 2026

Engine evaluation

+0.36 White is slightly better

Best play: 3. Bd2 a5 4. Nc3 d5 5. cxd5 exd5 6. a3 Bxc3 7. Bxc3 Nf6

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

By rating

The stronger the players, the better this line does for Black: Black scores 42% under 1400, 50% at 2200 and up and 46% in master games (wins plus half the draws).

PlayersGamesWhite / Draw / BlackW / D / B
Under 1400 362K
1400–1799 562K
1800–2199 238K
2200 and up 62K
Masters, over the board 3,711

Master games

Rated blitz, rapid and classical Lichess games by rating band, and over-the-board games of players rated 2200+ from the Lichess masters database, updated Sep 27, 2026

Overview

Kangaroo Defense (ECO A40, Flank Openings) is a variation of the Horwitz Defense, reached after 1. d4 e6 2. c4 Bb4+ (2 moves).

In 568,172 rated Lichess games between players rated 1600 to 2500, White won 52.4%, Black 42.3% and 5.2% were drawn. White's most played move here is 3. Nc3, in 52% of those games.

It continues into one named variation, Kangaroo Defense: Keres Defense, Transpositional Variation.

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How to play against the Kangaroo Defense

3. Nd2 scores best for White: 56.3%, with White winning 53.2% and Black 40.6% of 33K games. The most played, 3. Nc3, scores 55.2% in 295K games, and 3. Bd2 scores lowest: 54.8%. Stockfish's first choice is 3. Bd2.

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

Popularity by year

The Kangaroo Defense is played less than half as often as in 2016: 0.018% of Lichess games in 2025, down from 0.037%.

Numbers by year
YearShare of gamesGames
20160.037%13,373
20170.031%17,233
20180.029%22,582
20190.025%31,128
20200.025%72,739
20210.023%91,263
20220.022%83,041
20230.02%76,111
20240.018%65,468
20250.018%62,149
2026 (Jan–Apr)0.02%21,846

Share of rated Lichess games between players rated 1600 to 2500 (blitz, rapid and classical) that reach this position, by year; 2026: January to April. Which openings are rising and falling

Variations (1)

Cite this page

Caissa Codex. “Kangaroo Defense (A40)”. Lichess data as of 1 Nov 2026. https://chesscodex.org/openings/kangaroo-defense