A REVIEW OF CHESS

In the example diagram, either aspect acquiring the move is in zugzwang: Black to maneuver have to Enjoy one...Kb7 letting White to promote the pawn after 2.Kd7; White to maneuver have to allow a draw, both by one.Kc6 stalemate or by losing the pawn after any other legal move.You could only shift a single chess piece at a time when it is your turn