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 Rd4 draw
3 Re4 draw
4 Rf4 draw
5 Rg4 draw
6 K7b7 loss in 2 half-moves
7 K7b8 loss in 2 half-moves
8 K8b7 loss in 2 half-moves
9 K8b8 loss in 2 half-moves
10 Ka6 loss in 2 half-moves
11 Kb6 loss in 2 half-moves
12 Ra4 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb5 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Rb7 loss in 2 half-moves
18 Rb8 loss in 2 half-moves
19 Rc4 loss in 2 half-moves
20 Rh4 loss in 2 half-moves