When a piece is pregnant, he must be rushed to the Hospital Square (h1) within nine turns (the gestation period). When the piece reaches this square, he can give birth by rolling 4 or more. The colour of the offspring depends on the colours of the parents. The offspring piece is considered a child for the next 20 turns and cannot attack, but after this it is a fully-fledged piece. The type of piece in question is decided by D6.
If the piece fails to reach the Hospital Square in time, the gestation period ends and play continues.
- ↑ Pregnancy, Chess and You, Harvard Press, 2006