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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rb4 win in 5 half-moves
3 Rb6 win in 5 half-moves
4 Rb8 win in 11 half-moves
5 K4b5 draw
6 K6b5 draw
7 Rb5 draw
8 Re1 draw
9 Rg1 draw
10 Rh1 draw
11 Kb3 loss in 2 half-moves
12 Kb4 loss in 2 half-moves
13 Kb6 loss in 2 half-moves
14 Kb7 loss in 2 half-moves
15 Kc3 loss in 2 half-moves
16 Kc7 loss in 2 half-moves
17 Kd3 loss in 2 half-moves
18 Kd4 loss in 2 half-moves
19 Kd6 loss in 2 half-moves
20 Kd7 loss in 2 half-moves
21 Ra1 loss in 2 half-moves
22 Rb2 loss in 2 half-moves
23 Rb3 loss in 2 half-moves
24 Rc1 loss in 2 half-moves
25 Rd1 loss in 2 half-moves
26 Rf1 loss in 2 half-moves
27 K4c5 loss in 1 half-moves
28 K4d5 loss in 1 half-moves
29 K6c5 loss in 1 half-moves
30 K6d5 loss in 1 half-moves