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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Kb6 win in 3 half-moves
4 Rb2 win in 3 half-moves
5 Ka4 draw
6 Ka6 draw
7 Ra1 draw
8 Rc2 draw
9 Rd2 draw
10 Re2 draw
11 Ra3 loss in 2 half-moves
12 Ra4 loss in 2 half-moves
13 Rf2 loss in 2 half-moves
14 Rg2 loss in 2 half-moves
15 Rh2 loss in 2 half-moves