1.e4 e5 2.f4 Nc6 3.Nf3 d6 4.Bc4 h6: 5.O-O? (61% of 0.5M games)

The most played move is an inaccuracy

9 手

1.e4 e5 2.f4 Nc6 3.Nf3 d6 4.Bc4 h6. In 548,516 Lichess games between 1600 and 2200, the most played move is 5.O-O (61%). At 20 million nodes it is a blunder: -1.46 against +0.47 for d3, 18 win-chance points, confirmed by a second search (-1.51 against +0.46). Masters database, to…

The club move: 61% of games. blunder, 18 win-chance points against d3. -1.46 at 20M nodes.