Stuck!
interesting game. Black could have played Ra8 to prevent the promotion of the white pawn. Why did you not castle both sides at queen side?
20...a1=Q?? is about as bad as it gets. Black should instead have won with 20...Rxa8 21.Kd2 (21.Kb2 a1=Q+ 22.Rxa1 Rfb8+ 23.Kc1 Rxa1+) 21...Rfd8+ 22.Ke2 Rxd1 23.Rxd1 a1=Q 24.Rxa1 Rxa1 0-1
