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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Rb7 win in 3 half-moves
3 Rb8 win in 3 half-moves
4 Ka2 draw
5 Ka7 draw
6 Kb2 draw
7 Kb7 draw
8 Kb8 draw
9 Rb4 draw
10 Rb6 draw
11 Rd5 draw
12 Ka3 loss in 2 half-moves
13 Ka4 loss in 2 half-moves
14 Kc2 loss in 2 half-moves
15 Kc3 loss in 2 half-moves
16 Kc4 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Rc5 loss in 2 half-moves
19 Re5 loss in 2 half-moves
20 Rf5 loss in 2 half-moves
21 Rg5 loss in 2 half-moves
22 Rh5 loss in 2 half-moves