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

EGTB: win in 4 half-moves

# move score
1 Kc7 win in 3 half-moves
2 Kaa7 draw
3 Kab7 draw
4 Kba7 draw
5 Kbb7 draw
6 Kc8 draw
7 Ra5 draw
8 Rb5 draw
9 Rc5 draw
10 Rd1 draw
11 Rd2 draw
12 Rd3 draw
13 Rd4 draw
14 Re5 draw
15 Rd6 loss in 2 half-moves
16 Rd7 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Rf5 loss in 2 half-moves
19 Rg5 loss in 2 half-moves
20 Rh5 loss in 2 half-moves