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

EGTB: win in 6 half-moves

# move score
1 Rb8 win in 5 half-moves
2 Rb5 draw
3 Rh2 draw
4 Kc7 loss in 2 half-moves
5 Kc8 loss in 2 half-moves
6 Kdd7 loss in 2 half-moves
7 Kde7 loss in 2 half-moves
8 Ked7 loss in 2 half-moves
9 Kee7 loss in 2 half-moves
10 Kf7 loss in 2 half-moves
11 Kf8 loss in 2 half-moves
12 Ra2 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb4 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Rb7 loss in 2 half-moves
18 Rc2 loss in 2 half-moves
19 Rd2 loss in 2 half-moves
20 Re2 loss in 2 half-moves
21 Rf2 loss in 2 half-moves
22 Rg2 loss in 2 half-moves