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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Ka3 win in 5 half-moves
3 Kb3 win in 5 half-moves
4 K4b4 draw
5 K4b5 draw
6 K5b4 draw
7 K5b5 draw
8 Ka6 draw
9 Kb6 draw
10 Ra1 draw
11 Ra3 draw
12 Rc2 draw
13 Rd2 draw
14 Rh2 draw
15 Re2 loss in 2 half-moves
16 Rf2 loss in 2 half-moves
17 Rg2 loss in 2 half-moves