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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ka5 draw
3 Kb5 draw
4 Rb5 draw
5 Re3 draw
6 Rf3 draw
7 Rg3 draw
8 Ka7 loss in 2 half-moves
9 Kb6 loss in 2 half-moves
10 Kb7 loss in 2 half-moves
11 Kc7 loss in 2 half-moves
12 Kc8 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Ke7 loss in 2 half-moves
15 Ke8 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rb2 loss in 2 half-moves
19 Rb4 loss in 2 half-moves
20 Rb6 loss in 2 half-moves
21 Rb7 loss in 2 half-moves
22 Rc3 loss in 2 half-moves
23 Rd3 loss in 2 half-moves
24 Rh3 loss in 2 half-moves