C46

Three Knights Opening 3. Nc3 Bb4

Chess diagram: Three Knights Opening after 3…Bb4

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.

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Statistics from Lichess

1,465,753 games: White 49.7% / Draw 4.9% / Black 45.5%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
369,399369K
239,934240K
218,491218K
214,257214K
180,347180K
169,809170K
29,89030K
8,9318,931

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 26, 2026

Engine evaluation

+0.56 White is slightly better

Best play: 4. Nd5 Nf6 5. c3 Be7 6. Bd3 d6 7. Bc2 Be6 8. Nxe7 Nxe7

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 worse this line does for Black: Black scores 50% under 1400, 47% at 2200 and up (wins plus half the draws).

PlayersGamesWhite / Draw / BlackW / D / B
Under 1400 3.5M
1400–1799 2.6M
1800–2199 480K
2200 and up 24K
Masters, over the board 97

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

Three Knights Opening (ECO C46, Open Games) is a variation of the Three Knights Opening, reached after 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 (3 moves).

In 1,465,753 rated Lichess games between players rated 1600 to 2500, White won 49.7%, Black 45.5% and 4.9% were drawn. White's most played move here is 4. Bc4, in 25% of those games.

It continues into one named variation, Three Knights Opening: Schlechter Variation.

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How to answer 3…Bb4

4. d4 scores best for White: 56.1%, with White winning 53.5% and Black 41.4% of 170K games. The most played, 4. Bc4, scores 52.3% in 369K games, and 4. a3 scores lowest: 49.2%. Stockfish's first choice is 4. Nd5.

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

This line dipped to 0.04% of Lichess games in 2018 and has recovered since: 0.055% in 2025.

Numbers by year
YearShare of gamesGames
20160.058%20,732
20170.044%24,285
20180.04%31,297
20190.047%58,128
20200.055%161,896
20210.063%245,520
20220.06%223,721
20230.059%222,884
20240.057%203,521
20250.055%192,305
2026 (Jan–Apr)0.055%60,235

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. “Three Knights Opening (C46)”. Lichess data as of 26 Oct 2026. https://chesscodex.org/openings/three-knights-opening-2