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

EGTB: win in 4 half-moves

# move score
1 Rd8 win in 3 half-moves
2 Kd8 draw
3 Kef8 draw
4 Kgf8 draw
5 Kh8 draw
6 Ra8 draw
7 Rb1 draw
8 Rb7 draw
9 Rc8 draw
10 Kd7 loss in 2 half-moves
11 Ke7 loss in 2 half-moves
12 Kef7 loss in 2 half-moves
13 Kg7 loss in 2 half-moves
14 Kgf7 loss in 2 half-moves
15 Kh7 loss in 2 half-moves
16 Rb2 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Rb5 loss in 2 half-moves
20 Rb6 loss in 2 half-moves