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

EGTB: win in 2 half-moves

# move score
1 Ra3 win in 1 half-moves
2 Rc7 win in 1 half-moves
3 Re3 win in 1 half-moves
4 Rc8 draw
5 Kb1 loss in 2 half-moves
6 Kb2 loss in 2 half-moves
7 Kb3 loss in 2 half-moves
8 Kc1 loss in 2 half-moves
9 Kd1 loss in 2 half-moves
10 Kd2 loss in 2 half-moves
11 Kd3 loss in 2 half-moves
12 Rb3 loss in 2 half-moves
13 Rc4 loss in 2 half-moves
14 Rc5 loss in 2 half-moves
15 Rc6 loss in 2 half-moves
16 Rd3 loss in 2 half-moves
17 Rh3 loss in 2 half-moves
18 Rf3 loss in 1 half-moves
19 Rg3 loss in 1 half-moves