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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Ka1 draw
3 Ka2 draw
4 Ka3 draw
5 Kb1 draw
6 Kc1 draw
7 Kc2 draw
8 Rf8 draw
9 Rg8 draw
10 Rh8 draw
11 Ka7 loss in 2 half-moves
12 Kb3 loss in 2 half-moves
13 Kb7 loss in 2 half-moves
14 Kc3 loss in 2 half-moves
15 Rb3 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rb6 loss in 2 half-moves
18 Rb7 loss in 2 half-moves
19 Rc8 loss in 2 half-moves
20 Rd8 loss in 2 half-moves
21 Re8 loss in 2 half-moves