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EGTB: win in 4 half-moves

# move score
1 Rc7 win in 3 half-moves
2 Rd7 draw
3 Re7 draw
4 Rf2 draw
5 Rf4 draw
6 Rf5 draw
7 Rf6 draw
8 K7a7 loss in 2 half-moves
9 K7a8 loss in 2 half-moves
10 K7c7 loss in 2 half-moves
11 K7c8 loss in 2 half-moves
12 K8a7 loss in 2 half-moves
13 K8a8 loss in 2 half-moves
14 K8c7 loss in 2 half-moves
15 K8c8 loss in 2 half-moves
16 Ka6 loss in 2 half-moves
17 Kb6 loss in 2 half-moves
18 Kc6 loss in 2 half-moves
19 Rf1 loss in 2 half-moves
20 Rf3 loss in 2 half-moves
21 Rf8 loss in 2 half-moves
22 Rg7 loss in 2 half-moves
23 Rh7 loss in 2 half-moves