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

EGTB: win in 2 half-moves

# move score
1 Ra1 win in 1 half-moves
2 Rb6 win in 1 half-moves
3 Kb2 draw
4 Kc2 draw
5 Kd2 draw
6 Rb2 draw
7 Rb3 draw
8 Rb4 draw
9 Rb5 draw
10 Kd1 loss in 6 half-moves
11 Rb7 loss in 2 half-moves
12 Rb8 loss in 2 half-moves