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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rb4 draw
3 Rb5 draw
4 Rb6 draw
5 Rb8 draw
6 Rf3 draw
7 Rg3 draw
8 Rh3 draw
9 Ka7 loss in 2 half-moves
10 Kab7 loss in 2 half-moves
11 Kab8 loss in 2 half-moves
12 Kc7 loss in 2 half-moves
13 Kcb7 loss in 2 half-moves
14 Kcb8 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Kd8 loss in 2 half-moves
17 Ra3 loss in 2 half-moves
18 Rb1 loss in 2 half-moves
19 Rb2 loss in 2 half-moves
20 Rc3 loss in 2 half-moves
21 Rd3 loss in 2 half-moves
22 Re3 loss in 2 half-moves