The game was invented by French composer Pierre Monréal in 1967[1] and the rules of Circe chess were first detailed by Monréal and Jean-Pierre Boyer in an article in Problème, 1968.
A reborn pawn regains its initial two-step move option.
If the square that the rebirth should take place on is occupied, either by a friendly or enemy piece, the captured unit is not reborn—it is instead removed from the board and takes no further part in the game (like a capture in orthodox chess).
)[2] The position illustrated demonstrates a couple of unusual effects which can occur in Circe.
For example, if in the example diagram, White were to take Black's knight, this would be notated Rxe8(Ng8).