Wild 4: In this variant a random set of pieces is generated. These pieces are placed randomly for White and Black behind the rank of pawns, subject to the constraint that the bishops must be balanced.
Example:
BLACK
b n n r k q r b
p p p p p p p p
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
P P P P P P P P
N B R K Q N B R
WHITE
See also: atomic, boards, match, suicide, wild, wild 1, wild 2, wild 3, wild 5, wild 6, wild 7, wild 8, wild 9, wild 10, wild 11, wild 12, wild 17