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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Rb1 draw
3 Rc2 draw
4 Rd2 draw
5 Re2 draw
6 Rg2 draw
7 Ka5 loss in 2 half-moves
8 Ka6 loss in 2 half-moves
9 Kaa7 loss in 2 half-moves
10 Kab7 loss in 2 half-moves
11 Kb5 loss in 2 half-moves
12 Kb8 loss in 2 half-moves
13 Kba7 loss in 2 half-moves
14 Kbb7 loss in 2 half-moves
15 Kc5 loss in 2 half-moves
16 Kc6 loss in 2 half-moves
17 Kc7 loss in 2 half-moves
18 Ra2 loss in 2 half-moves
19 Rb3 loss in 2 half-moves
20 Rb4 loss in 2 half-moves
21 Rf2 loss in 2 half-moves
22 Rh2 loss in 2 half-moves