Mini Chess Los Alamos is a simplified variant played on a 6x6 grid. Each player has a king, 2 rooks, and 2 knights. The goal is to checkmate the opponent's king. Kings move 1 square in any direction. Rooks move horizontally or vertically any number of squares. Knights move in an L-shape pattern. There is no castling, pawn promotion, or en passant. It's a quick, tactical game with condensed mechanics, making it accessible yet challenging.