Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Kc5 draw
3 Kd5 draw
4 Ke4 draw
5 Ke5 draw
6 Ra4 draw
7 Rc2 draw
8 Rc3 draw
9 Rc6 draw
10 Rc7 draw
11 Rc8 draw
12 Kc3 loss in 2 half-moves
13 Kd3 loss in 2 half-moves
14 Ke3 loss in 2 half-moves
15 Rc1 loss in 2 half-moves
16 Rc5 loss in 2 half-moves