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

EGTB: win in 4 half-moves

# move score
1 Ra4 win in 3 half-moves
2 R7a6 win in 5 half-moves
3 Rb5 win in 5 half-moves
4 Rb7 win in 5 half-moves
5 Ra8 win in 7 half-moves
6 R5a6 win in 19 half-moves
7 Kb1 draw
8 Kb2 draw
9 Ra2 draw
10 Rc5 draw
11 Rc7 draw
12 Kd1 loss in 2 half-moves
13 Kd2 loss in 2 half-moves
14 Ra1 loss in 2 half-moves
15 Ra3 loss in 2 half-moves
16 Rd5 loss in 2 half-moves
17 Rd7 loss in 2 half-moves
18 Re5 loss in 2 half-moves
19 Re7 loss in 2 half-moves
20 Rf5 loss in 2 half-moves
21 Rf7 loss in 2 half-moves
22 Rg5 loss in 2 half-moves
23 Rg7 loss in 2 half-moves
24 Rh5 loss in 2 half-moves
25 Rh7 loss in 2 half-moves
26 Kc2 loss in 1 half-moves