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

EGTB: win in 2 half-moves

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