1 comment No.1252 Gani Ganapathi (India) Original Retro & PG problems JF – R2017-18 Definition: (click to show/hide) Disparate: If one side makes a move with a piece of type “x” (black, white,neutral, half-neutral, etc., King included), the other side cannot answer immediately by moving a piece of the same type “x”.). A pawn promoting is a pawn move. No.1252 Gani Ganapathi India original – 20.11.2017 Solution: (click to show/hide) white Bf1c1 Ke1 Qd1 Ph2g2f2e2d2c2b2a2 Sg1b1 Rh1a1 black Bf8c8 Ke8 Qd8 Ph7g7f7e7d7c7b7a7 Sg8b8 Rh8a8 PG 6 (16+16) Disparate 1.g2-g3 Sg8-f6 2.Bf1-g2 g7-g6 3.Sg1-f3 Bf8-g7 4.0-0 e7-e5 5.Bg2-h1 0-0 6.e2-e4 Bg7-h8 {dia (C+ by Popeye 4.79)} The point is the final position of Black and White are mirrored! BR and br Interchange. (Author)
White and black have made the same moves but in different order. Obviously the position is mirrored !!