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