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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Rd4 win in 1 half-moves
3 Rb5 draw
4 Rb6 draw
5 Rb7 draw
6 K1a2 loss in 2 half-moves
7 K1b2 loss in 2 half-moves
8 K3a2 loss in 2 half-moves
9 K3b2 loss in 2 half-moves
10 Ka4 loss in 2 half-moves
11 Kb1 loss in 2 half-moves
12 Kb3 loss in 2 half-moves
13 Ra4 loss in 2 half-moves
14 Rb1 loss in 2 half-moves
15 Rb2 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rc4 loss in 2 half-moves
18 Re4 loss in 2 half-moves
19 Rf4 loss in 2 half-moves
20 Rg4 loss in 2 half-moves
21 Rh4 loss in 2 half-moves