Boardgamegeek https://boardgamegeek.com/boardgame/256486/polyssimo-challenge
Anglais - Polyssimo Challenge is a tactical game for 2 to 4 players containing a board made of 12x11 squares and 24 pieces: the 12 pentominoes (all the possible combinations of five squares) and 12 hexominoes (some of the combinations of six squares).