Lion Defense: Bayonet Attack

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. g4

The Lion Defense: Bayonet Attack is a chess opening classified as ECO B07, reached after 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. g4. It is a line of the Lion Defense. Black is to move.

In 12.6 million rated Lichess games (blitz and slower), this position was reached 33 times by this move order. White won 61%, 3% were drawn and Black won 36%. The most popular continuation is 4… h6 (42% of games).

Engine evaluation: +0.47 (Stockfish, depth 55; best line 4… h6 5. h3 e6 6. Bg2 c5 7. Be3)

ECO: B07
Moves: 7 plies
FEN: r1bqkb1r/pppnpppp/3p1n2/8/3PP1P1/2N5/PPP2P1P/R1BQKBNR b KQkq - 0 4
PGN: 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. g4

Analyse with Stockfish · Board image (SVG) · Open on Lichess

Results by rating

Average rating	Games	White / draw / Black
1500-1999	3	67%33%
2000+	30	60%37%
All	33	61%36%

Most played moves

Move	Games	White / draw / Black
4… h6	14 (42%)	57%43%
4… e5	14 (42%)	64%36%
4… h5	2 (6%)	50%50%
4… g6	2 (6%)	50%50%
4… c6	1 (3%)	100%

Master games

264 over-the-board games are classified under this line (White 56%, draw 19%, Black 25%). The strongest:

LCZero 0.30-dag-9a9c42d_784968 (3599) – Stockfish dev16_20221027 (3625) 1/2-1/2 · TCEC 23 Superfinal 2022 · 2022-11-10
Stockfish dev16_20221027 (3625) – LCZero 0.30-dag-9a9c42d_784968 (3599) 1-0 · TCEC 23 Superfinal 2022 · 2022-11-10
Igel 3.5.5 (3502) – RubiChess 20230823 (3508) 1/2-1/2 · TCEC 25 Premier 2023 · 2023-09-06
RubiChess 20230823 (3508) – Igel 3.5.5 (3502) 1/2-1/2 · TCEC 25 Premier 2023 · 2023-09-06
GM Nihal Sarin (2620) – GM Alexander Morozevich (2659) 1-0 · Titled Tuesday 19th May · 2020-05-19

Search all games of the Lion Defense: Bayonet Attack and its sub-variations

Highest-rated Lichess games

ExecutiveNinja (2421) – afrik58 (2459) 0-1 · 2026-09-03 · 180 + 2s
SPG_Soham (2407) – svpopovych (2417) 0-1 · 2026-09-04 · 600 + 0s
mightysonce (2487) – PitZampas (2336) 1-0 · 2026-09-03 · 180 + 0s

Comes from

Lion Defense 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7

More Lion Defense lines (all)

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.