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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kc7 draw
3 Kd7 draw
4 Ra8 draw
5 Rc1 draw
6 Rc2 draw
7 Rc3 draw
8 Rc4 draw
9 Ke7 loss in 2 half-moves
10 Ke8 loss in 2 half-moves
11 Rc5 loss in 2 half-moves
12 Rc6 loss in 2 half-moves
13 Rc7 loss in 2 half-moves