question: private final boolean relatedMoves ( Move m1 , Move m2 ) { if ( ( m1 . from == m1 . to ) || ( m2 . from == m2 . to ) ) return false ; if ( ( m1 . to == m2 . from ) || ( m1 . from == m2 . to ) || ( ( BitBoard . squaresBetween [ m2 . from ] [ m2 . to ] & ( 1L << m1 . from ) ) != 0 ) ) return true ; return false ; }
target:  Return true if move m2 was made possible by move m1. 