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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Rd4 win in 1 half-moves
3 Re4 draw
4 Rf4 draw
5 Ka1 loss in 2 half-moves
6 Ka4 loss in 2 half-moves
7 Kaa3 loss in 2 half-moves
8 Kab2 loss in 2 half-moves
9 Kb1 loss in 2 half-moves
10 Kba3 loss in 2 half-moves
11 Kbb2 loss in 2 half-moves
12 Kc2 loss in 2 half-moves
13 Kc3 loss in 2 half-moves
14 Kc4 loss in 2 half-moves
15 Ra4 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 Rc4 loss in 2 half-moves
20 Rg4 loss in 2 half-moves
21 Rh4 loss in 2 half-moves