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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Kg6 draw
3 Kh6 draw
4 Ra3 draw
5 Rb4 draw
6 Rb5 draw
7 Rb6 draw
8 Rb8 draw
9 Rc3 draw
10 Rd3 draw
11 Re3 draw
12 Kd7 loss in 2 half-moves
13 Kd8 loss in 2 half-moves
14 Ke7 loss in 2 half-moves
15 Kf7 loss in 2 half-moves
16 Kf8 loss in 2 half-moves
17 Kg7 loss in 2 half-moves
18 Kg8 loss in 2 half-moves
19 Kh8 loss in 2 half-moves
20 Rb1 loss in 2 half-moves
21 Rb2 loss in 2 half-moves
22 Rf3 loss in 2 half-moves
23 Rg3 loss in 2 half-moves
24 Rh3 loss in 2 half-moves