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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rb1 win in 7 half-moves
3 Rb3 win in 7 half-moves
4 Ka5 draw
5 Ka7 draw
6 Kb2 draw
7 Kb3 draw
8 Kb4 draw
9 Kb5 draw
10 Kb6 draw
11 Kb7 draw
12 Kc2 draw
13 Kc4 draw
14 Kd2 draw
15 Kd3 draw
16 Ra8 draw
17 Rb4 draw
18 Rc8 draw
19 Rd8 draw
20 Rh8 draw
21 Kd4 loss in 2 half-moves
22 Rb5 loss in 2 half-moves
23 Rb6 loss in 2 half-moves
24 Rb7 loss in 2 half-moves
25 Re8 loss in 2 half-moves
26 Rf8 loss in 2 half-moves
27 Rg8 loss in 2 half-moves