Forced Promotion of Opponent's Pawn

When your move forces the opponent's pawn to reach your back rank (via Superpermutation), that pawn is automatically promoted to a queen by default, even if this outcome is unfavorable to both players.

Example Position 1:

Black rolls a 2 (g-file) and plays Rf8-g8:

White pawn promotes to a queen automatically.

Illegal Move Rule:

If forced promotion results in a check to the moving player’s own king, the move is illegal.

Example Position 2:

Black rolls a 2 (g-file).

Illegal moves:

Nh6-g8 (promotes White pawn to queen, delivering check to Black king)

Rh8-g8 (same result)

Both moves result in self-check after forced promotion, making them invalid.