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

EGTB: win in 2 half-moves

# move score
1 Rb1 win in 1 half-moves
2 Ka5 draw
3 Ka8 draw
4 Kaa7 draw
5 Kb8 draw
6 Kba7 draw
7 Kc6 draw
8 Kc7 draw
9 Kc8 draw
10 Rb5 draw
11 Rf6 draw
12 Rg6 draw
13 Rh6 draw
14 Kb5 loss in 2 half-moves
15 Rb2 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rb4 loss in 2 half-moves
18 Rc6 loss in 2 half-moves
19 Rd6 loss in 2 half-moves
20 Re6 loss in 2 half-moves