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

EGTB: win in 2 half-moves

# move score
1 Ra4 win in 1 half-moves
2 Rb6 win in 1 half-moves
3 Kb3 draw
4 Kc3 draw
5 Kd3 draw
6 Kd4 draw
7 Rb1 draw
8 Rb2 draw
9 Rb3 draw
10 Rb5 draw
11 Kb5 loss in 2 half-moves
12 Kc5 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rb8 loss in 2 half-moves