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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Rb2 win in 17 half-moves
3 Ka2 draw
4 Kab1 draw
5 Kab2 draw
6 Kc1 draw
7 Kcb1 draw
8 Kcb2 draw
9 Kd1 draw
10 Kd2 draw
11 Ra8 draw
12 Rb7 draw
13 Rh8 draw
14 Kb3 loss in 2 half-moves
15 Kc3 loss in 2 half-moves
16 Kd3 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
21 Rc8 loss in 2 half-moves
22 Rd8 loss in 2 half-moves
23 Re8 loss in 2 half-moves
24 Rf8 loss in 2 half-moves
25 Rg8 loss in 2 half-moves