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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Ra6 draw
3 Ra7 draw
4 Ra8 draw
5 Rg5 draw
6 Rh5 draw
7 Ka3 loss in 2 half-moves
8 Kab3 loss in 2 half-moves
9 Kab4 loss in 2 half-moves
10 Kb2 loss in 2 half-moves
11 Kc2 loss in 2 half-moves
12 Kc4 loss in 2 half-moves
13 Kcb3 loss in 2 half-moves
14 Kcb4 loss in 2 half-moves
15 Kd2 loss in 2 half-moves
16 Kd3 loss in 2 half-moves
17 Kd4 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Rc5 loss in 2 half-moves
20 Rd5 loss in 2 half-moves
21 Re5 loss in 2 half-moves
22 Rf5 loss in 2 half-moves