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 Ka3 draw
3 Kb3 draw
4 Kc1 draw
5 Kc2 draw
6 Kc3 draw
7 Ra8 draw
8 Rb3 draw
9 Rc8 draw
10 Kb1 loss in 18 half-moves
11 Ka2 loss in 8 half-moves
12 Ka1 loss in 6 half-moves
13 Rb5 loss in 2 half-moves
14 Rb6 loss in 2 half-moves
15 Rb7 loss in 2 half-moves
16 Rd8 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rg8 loss in 2 half-moves
20 Rh8 loss in 1 half-moves