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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Kc5 draw
3 Kc6 draw
4 Kc7 draw
5 Kd7 draw
6 Kde6 draw
7 Kde7 draw
8 Kf7 draw
9 Kfe6 draw
10 Kfe7 draw
11 Kg7 draw
12 Ra1 draw
13 Rb6 draw
14 Rb8 draw
15 Rc1 draw
16 Rd1 draw
17 Rh1 draw
18 Kd5 loss in 2 half-moves
19 Kde5 loss in 2 half-moves
20 Kf5 loss in 2 half-moves
21 Kfe5 loss in 2 half-moves
22 Kg5 loss in 2 half-moves
23 Kg6 loss in 2 half-moves
24 Rb2 loss in 2 half-moves
25 Rb3 loss in 2 half-moves
26 Rb4 loss in 2 half-moves
27 Rb5 loss in 2 half-moves
28 Re1 loss in 2 half-moves
29 Rf1 loss in 2 half-moves
30 Rg1 loss in 2 half-moves