Cyclix

Cyclix is one of the "Atlantis Triplets" that employ different implementations of the "atlantis effect", the gradual disappearance of the playing area, eventually leaving one king or the other without refuge.

The other two are Shakti and Caïssa.

A captured piece is removed from the board and returned to the owner, who is then said to have the piece "in hand." A piece in hand may conditionally be re-entered. This is done by moving the king and placing the piece on the tile thus vacated.