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