Kriegspiel go and chess variants

Kriegspiel chess

The following ideas are independent:

Opponent's pieces become visible if attacking.

Opponent's pieces become visible if attacked.

Visibility takes effect not immediately, but the subsequent move.

At the beginning of the game, each player may choose any Chess960 starting position.

Kriegspiel go 囲碁

Opponent's pieces become visible if adjacent.

Opponent's connected groups become visible if adjacent.