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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Rb1 draw
3 Rb2 draw
4 Rb4 draw
5 Rb5 draw
6 Rb6 draw
7 Rd7 draw
8 Re7 draw
9 Rf7 draw
10 Rg7 draw
11 Kc1 loss in 2 half-moves
12 Kc2 loss in 2 half-moves
13 Kd3 loss in 2 half-moves
14 Kdd2 loss in 2 half-moves
15 Kde1 loss in 2 half-moves
16 Ke3 loss in 2 half-moves
17 Ked2 loss in 2 half-moves
18 Kee1 loss in 2 half-moves
19 Kf1 loss in 2 half-moves
20 Kf2 loss in 2 half-moves
21 Kf3 loss in 2 half-moves
22 Ra7 loss in 2 half-moves
23 Rb8 loss in 2 half-moves
24 Rc7 loss in 2 half-moves
25 Rh7 loss in 2 half-moves