active king chess

• standard chess board and setup.
• a turn consists of 2 moves: a non-king move and a king move. when it's a player's turn he has to make a move with a non-king piece, and a move with the king.
• a king cannot move into the square it was in in the previous move. (it can move into a square it was in two moves ago, however.) if no other move is possible for the king, that player loses the game.
• if any player cannot do one of these two moves, he loses the game.
• there's no checking, checkmate or stalemate. if the king is captured, since the player will not be able to complete the two moves, he will lose. if a player is left with a bare king he will also lose the game as there is no non-king piece to move.
• there's no castling since the king would have moved by the time it can castle.
• otherwise standard chess rules apply.