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

EGTB: win in 2 half-moves

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