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EGTB: win in 4 half-moves

# move score
1 Rc4 win in 3 half-moves
2 Ra4 draw
3 Rb4 draw
4 Rd4 draw
5 Re4 draw
6 Rf4 draw
7 Rg5 draw
8 Rg6 draw
9 Rg7 draw
10 Rg8 draw
11 K3c4 loss in 2 half-moves
12 K3d4 loss in 2 half-moves
13 K3e4 loss in 2 half-moves
14 K5c4 loss in 2 half-moves
15 K5d4 loss in 2 half-moves
16 K5e4 loss in 2 half-moves
17 Kc2 loss in 2 half-moves
18 Kc3 loss in 2 half-moves
19 Kc5 loss in 2 half-moves
20 Kc6 loss in 2 half-moves
21 Kd2 loss in 2 half-moves
22 Kd6 loss in 2 half-moves
23 Ke2 loss in 2 half-moves
24 Ke3 loss in 2 half-moves
25 Ke5 loss in 2 half-moves
26 Ke6 loss in 2 half-moves
27 Rg1 loss in 2 half-moves
28 Rg2 loss in 2 half-moves
29 Rg3 loss in 2 half-moves
30 Rh4 loss in 2 half-moves