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 Ra1 win in 3 half-moves
3 Rb1 win in 3 half-moves
4 Rc8 win in 3 half-moves
5 Ka5 win in 5 half-moves
6 Ka8 draw
7 Kaa7 draw
8 Kab7 draw
9 Kb6 draw
10 Kba7 draw
11 Kbb7 draw
12 Kc7 draw
13 Rc2 draw
14 Rc3 draw
15 Rc7 draw
16 Rd1 draw
17 Rh1 draw
18 Kc8 loss in 2 half-moves
19 Rc4 loss in 2 half-moves
20 Rc5 loss in 2 half-moves
21 Rc6 loss in 2 half-moves
22 Re1 loss in 2 half-moves
23 Rf1 loss in 2 half-moves
24 Rg1 loss in 2 half-moves