1.e4 e5 2.f4 exf4 3.Nf3 d5 4.e5: 4...Bg4? (36% of 0.7M games)

1 move

1.e4 e5 2.f4 exf4 3.Nf3 d5 4.e5. In 670,316 Lichess games between 1600 and 2200, the most played move is 4...Bg4 (36%). At 20 million nodes it is a mistake: -0.45 against -2.06 for g5, 14 win-chance points, confirmed by a second search (-0.39 against -2.05). Masters database, top…

The club move: 36% of games. mistake, 14 win-chance points against g5. -0.45 at 20M nodes.