Turnover Chess

Based on Othello’s turning pieces ability and moves based on Chess moves, with only three different pieces, an external and internal ring and a main button, arrangement turns it simple and complex at same time.

It is a game about take and turnover pieces between 2 players.
First player to perform checkmate at all enemy Castles wins the match. In other words, first player to take all opponent Castles, wins the match.

Pieces are double-sided in white and black. When player overlaps a piece that fits each other, it is not removed from the board; in other words, it is not a take, but rather, a turnover. In this case, pieces must be flipped to match color.