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 Ra3 win in 3 half-moves
3 Rb3 win in 3 half-moves
4 Rc3 win in 3 half-moves
5 Kb7 win in 5 half-moves
6 Ka7 draw
7 Ka8 draw
8 Kb3 draw
9 Kb5 draw
10 Kd3 draw
11 Kd4 draw
12 Kd5 draw
13 Rd3 draw
14 Re1 draw
15 Re2 draw
16 Re4 draw
17 Re5 draw
18 Kc3 loss in 2 half-moves
19 Kc5 loss in 2 half-moves
20 Kc7 loss in 2 half-moves
21 Kc8 loss in 2 half-moves
22 Re6 loss in 2 half-moves
23 Re7 loss in 2 half-moves
24 Re8 loss in 2 half-moves
25 Rf3 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rh3 loss in 2 half-moves