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