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

EGTB: win in 2 half-moves

# move score
1 Rb2 win in 1 half-moves
2 Rc4 draw
3 Rb1 loss in 6 half-moves
4 Rb5 loss in 4 half-moves
5 Rb6 loss in 4 half-moves
6 Ka7 loss in 2 half-moves
7 Kb7 loss in 2 half-moves
8 Kb8 loss in 2 half-moves
9 Ra4 loss in 2 half-moves
10 Rb3 loss in 2 half-moves
11 Rb7 loss in 2 half-moves
12 Rb8 loss in 2 half-moves
13 Rf4 loss in 2 half-moves
14 Rh4 loss in 2 half-moves
15 Rd4 loss in 1 half-moves
16 Re4 loss in 1 half-moves
17 Rg4 loss in 1 half-moves