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

EGTB: draw

# move score
1 Ka6 draw
2 Kb6 draw
3 Ra1 draw
4 Ra2 draw
5 Ra3 draw
6 Rb4 draw
7 Rc4 draw
8 Rd4 draw
9 Re4 draw
10 Rf4 draw
11 Rg4 draw
12 Rh4 draw
13 Kb4 loss in 2 half-moves
14 Kb5 loss in 2 half-moves