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EGTB: win in 4 half-moves

# move score
1 Rc8 win in 3 half-moves
2 Rd8 win in 5 half-moves
3 Ra8 draw
4 Rb8 draw
5 Re8 draw
6 Rf8 draw
7 Rg1 draw
8 Rg2 draw
9 Rg6 draw
10 Kc2 loss in 2 half-moves
11 Kc3 loss in 2 half-moves
12 Kc4 loss in 2 half-moves
13 Kd2 loss in 2 half-moves
14 Kd4 loss in 2 half-moves
15 Ke2 loss in 2 half-moves
16 Ke3 loss in 2 half-moves
17 Ke4 loss in 2 half-moves
18 Rg3 loss in 2 half-moves
19 Rg4 loss in 2 half-moves
20 Rg5 loss in 2 half-moves
21 Rg7 loss in 2 half-moves
22 Rh8 loss in 2 half-moves