Mieses Opening

Named after Jacques Mieses. A quiet first move that opens the diagonal of the queen’s bishop and keeps every pawn structure possible.

It is reached after a single move: 1. d3.

Black is to move and has 20 legal moves. Over the next four moves — two for each side — the game can branch into 328,511 different games. Those games reach 114,593 different positions: most positions can be reached in more than one way, 2.9 on average.

The Lichess opening list names 4 further lines after this position, such as Reversed Rat (1... e5) and Myers Spike Attack (1... g6 2. g4).