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 Kb1 draw
3 Kb2 draw
4 Kc2 draw
5 Kd1 draw
6 Kd2 draw
7 Ra2 draw
8 Ra6 draw
9 Ra8 draw
10 Raa7 draw
11 Rb1 draw
12 Rc7 draw
13 Rd7 draw
14 Re1 draw
15 Re2 draw
16 Re6 draw
17 Re8 draw
18 Rea7 draw
19 Rf7 draw
20 Ra3 loss in 2 half-moves
21 Ra4 loss in 2 half-moves
22 Ra5 loss in 2 half-moves
23 Re3 loss in 2 half-moves
24 Re4 loss in 2 half-moves
25 Re5 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rh7 loss in 2 half-moves