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

EGTB: win in 4 half-moves

# move score
1 Ra5 win in 3 half-moves
2 Kb4 win in 7 half-moves
3 Kb5 win in 7 half-moves
4 Ka1 draw
5 Ka2 draw
6 Ka5 draw
7 Kaa3 draw
8 Kab3 draw
9 Kb1 draw
10 Kba3 draw
11 Kbb3 draw
12 Kc1 draw
13 Kc2 draw
14 Kc3 draw
15 Ra6 draw
16 Ra8 draw
17 Rb7 draw
18 Rc7 draw
19 Rd7 draw
20 Re7 draw
21 Rg7 draw
22 Rh7 draw
23 Rf7 loss in 2 half-moves