When a unit is captured, one other unit of the same type as the capturing unit (if any are present) is changing colour at the same time. If more than one such unit is present, the choice of which is to be changing colour is made by the capturer.
No. 1638 Bruno Kampmann & Michel Caillaud
original - 30.07.2021
White Kg2 Ba8 Qe8 Sc7 Rc4 Pa5b3d6e5e2f4h7
Black Kc6 Rc5 Bb7 Qd7 Pa6b4e6f5