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

EGTB: win in 4 half-moves

# move score
1 Kb1 win in 3 half-moves
2 Kc4 win in 3 half-moves
3 Ra8 win in 3 half-moves
4 Rb8 win in 3 half-moves
5 Rc1 win in 3 half-moves
6 Rc2 win in 3 half-moves
7 Ka5 win in 5 half-moves
8 Kb5 win in 5 half-moves
9 Ka1 draw
10 Ka4 draw
11 Kaa3 draw
12 Kab3 draw
13 Kb2 draw
14 Kba3 draw
15 Kbb3 draw
16 Kc3 draw
17 Kc5 draw
18 Rc3 draw
19 Rc7 draw
20 Rd8 draw
21 Re8 draw
22 Rc4 loss in 2 half-moves
23 Rc5 loss in 2 half-moves
24 Rc6 loss in 2 half-moves
25 Rf8 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh8 loss in 2 half-moves