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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Rd4 win in 3 half-moves
3 Rd5 win in 3 half-moves
4 Rd6 win in 3 half-moves
5 Ra1 win in 5 half-moves
6 K5b5 draw
7 K6b5 draw
8 Ka4 draw
9 Ka7 draw
10 Rc1 draw
11 Rd2 draw
12 Rd3 draw
13 Rh1 draw
14 K5b6 loss in 2 half-moves
15 K6b6 loss in 2 half-moves
16 Kb4 loss in 2 half-moves
17 Kb7 loss in 2 half-moves
18 Rd7 loss in 2 half-moves
19 Rd8 loss in 2 half-moves
20 Re1 loss in 2 half-moves
21 Rf1 loss in 2 half-moves
22 Rg1 loss in 2 half-moves