What am I doing wrong with moving a piece?

[JemiloII]

So we have position.

/* Note: */s.send = s.postMessage;

So I've created a new game already and did the startpos.

s.send(`position startpos moves e2e4`);
s.send(`go depth 15`);

returns e2e4...

Trying to get it to move so when I call go again. It thinks of a new move so I can then do something like:

s.send(`position ${chess.fen()} moves e7e6`);

[ms6rb]

use this:

s.send(`position fen ${chess.fen()}`);

[nmrugg]

fen should be the starting position fen. You can use startpos for short.

s.send(`position startpos moves e2e4 e7e6`);

moves just keeps getting longer as the game progresses.

You can send the current fen, like ms6rb said. However, doing so will make three-fold repetition impossible for the engine to calculate, so you should avoid that whenever possible.