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

EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Rb7 win in 5 half-moves
3 Rb8 win in 5 half-moves
4 Ra2 draw
5 Rb1 draw
6 Rb5 draw
7 Rg2 draw
8 Rh2 draw
9 Kc6 loss in 2 half-moves
10 Kc7 loss in 2 half-moves
11 Kc8 loss in 2 half-moves
12 Kd6 loss in 2 half-moves
13 Kdd8 loss in 2 half-moves
14 Kde7 loss in 2 half-moves
15 Ke6 loss in 2 half-moves
16 Ked8 loss in 2 half-moves
17 Kee7 loss in 2 half-moves
18 Kf7 loss in 2 half-moves
19 Kf8 loss in 2 half-moves
20 Rb3 loss in 2 half-moves
21 Rb4 loss in 2 half-moves
22 Rc2 loss in 2 half-moves
23 Rd2 loss in 2 half-moves
24 Re2 loss in 2 half-moves
25 Rf2 loss in 2 half-moves