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

EGTB: win in 4 half-moves

# move score
1 Ra7 win in 3 half-moves
2 Ka2 draw
3 Ka4 draw
4 Ka5 draw
5 Ka6 draw
6 Kb1 draw
7 Kb2 draw
8 Kb4 draw
9 Kb6 draw
10 Kc4 draw
11 Kc5 draw
12 Kc6 draw
13 Rb7 draw
14 Rc7 draw
15 Rd7 draw
16 Re1 draw
17 Re2 draw
18 Re6 draw
19 Re8 draw
20 Re3 loss in 2 half-moves
21 Re4 loss in 2 half-moves
22 Re5 loss in 2 half-moves
23 Rf7 loss in 2 half-moves
24 Rg7 loss in 2 half-moves
25 Rh7 loss in 2 half-moves