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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rc7 win in 3 half-moves
3 Re7 win in 3 half-moves
4 Ra7 draw
5 Rh2 draw
6 Rh3 draw
7 Rh4 draw
8 Rh5 draw
9 Kb1 loss in 2 half-moves
10 Kb2 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Kc3 loss in 2 half-moves
13 Kcc1 loss in 2 half-moves
14 Kcd2 loss in 2 half-moves
15 Kd3 loss in 2 half-moves
16 Kdc1 loss in 2 half-moves
17 Kdd2 loss in 2 half-moves
18 Ke1 loss in 2 half-moves
19 Ke2 loss in 2 half-moves
20 Rd7 loss in 2 half-moves
21 Rf7 loss in 2 half-moves
22 Rg7 loss in 2 half-moves
23 Rh1 loss in 2 half-moves
24 Rh6 loss in 2 half-moves
25 Rh8 loss in 2 half-moves