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