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

EGTB: win in 4 half-moves

# move score
1 Kb8 win in 3 half-moves
2 Rc7 win in 3 half-moves
3 Kb7 win in 7 half-moves
4 Rc8 win in 7 half-moves
5 Ka7 draw
6 Ke8 draw
7 Kf7 draw
8 Kg7 draw
9 Kg8 draw
10 Ra3 draw
11 Rb3 draw
12 Rc4 draw
13 Rc5 draw
14 Rc6 draw
15 Rd3 draw
16 Re3 draw
17 Ke7 loss in 2 half-moves
18 Rc1 loss in 2 half-moves
19 Rc2 loss in 2 half-moves
20 Rf3 loss in 2 half-moves
21 Rg3 loss in 2 half-moves
22 Rh3 loss in 2 half-moves