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It looks one-two semi-moves ahead at maximum.

"ply" :)

The "How it works" link says it looks ahead 4 moves, that's probably 2 ply.

I was a bit lax using 'moves', it's 4 ply, so that's 2 full moves.

Oh, hey, you're the developer, right? Thanks for clarifying :)

Can you say what the lookahead is like? Is it a version of minimax?