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 Kc2 win in 3 half-moves
3 Ra8 win in 3 half-moves
4 Rb8 win in 3 half-moves
5 Rc5 win in 3 half-moves
6 Ka5 win in 5 half-moves
7 Kaa3 draw
8 Kab3 draw
9 Kb4 draw
10 Kba3 draw
11 Kbb3 draw
12 Rc1 draw
13 Rc3 draw
14 Rc6 draw
15 Rc7 draw
16 Re8 draw
17 Ka1 loss in 2 half-moves
18 Ka2 loss in 2 half-moves
19 Kb1 loss in 2 half-moves
20 Kc1 loss in 2 half-moves
21 Rc2 loss in 2 half-moves
22 Rc4 loss in 2 half-moves
23 Rd8 loss in 2 half-moves
24 Rf8 loss in 2 half-moves
25 Rg8 loss in 2 half-moves
26 Rh8 loss in 2 half-moves
27 Kc3 loss in 1 half-moves