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EGTB: win in 4 half-moves

# move score
1 Rf1 win in 3 half-moves
2 Rge1 win in 3 half-moves
3 Re2 draw
4 Re3 draw
5 Re7 draw
6 Ree1 draw
7 Rf8 draw
8 Ra1 loss in 2 half-moves
9 Ra8 loss in 2 half-moves
10 Rb1 loss in 2 half-moves
11 Rb8 loss in 2 half-moves
12 Rc1 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd1 loss in 2 half-moves
15 Rd8 loss in 2 half-moves
16 Re4 loss in 2 half-moves
17 Re5 loss in 2 half-moves
18 Re6 loss in 2 half-moves
19 Rg8 loss in 2 half-moves
20 Rh1 loss in 2 half-moves
21 Rh8 loss in 2 half-moves