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EGTB: win in 4 half-moves

# move score
1 Rd8 win in 3 half-moves
2 Kcb8 draw
3 Re8 draw
4 Rf8 draw
5 Rg1 draw
6 Rg2 draw
7 Rg3 draw
8 Rg4 draw
9 Ka7 loss in 2 half-moves
10 Kc7 loss in 2 half-moves
11 Kd7 loss in 2 half-moves
12 Kd8 loss in 2 half-moves
13 Rg5 loss in 2 half-moves
14 Rg6 loss in 2 half-moves
15 Rg7 loss in 2 half-moves
16 Rh8 loss in 2 half-moves
17 Kab7 loss in 1 half-moves
18 Kab8 loss in 1 half-moves
19 Kcb7 loss in 1 half-moves