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EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Kb3 draw
3 Kc3 draw
4 Kd3 draw
5 Rb3 draw
6 Rf4 draw
7 Kb1 loss in 2 half-moves
8 Kb2 loss in 2 half-moves
9 Kc1 loss in 2 half-moves
10 Kd1 loss in 2 half-moves
11 Kd2 loss in 2 half-moves
12 Kg1 loss in 2 half-moves
13 Kg2 loss in 2 half-moves
14 Kh2 loss in 2 half-moves
15 Ra4 loss in 2 half-moves
16 Rb1 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rb8 loss in 2 half-moves
21 Rc4 loss in 2 half-moves
22 Rd4 loss in 2 half-moves
23 Re4 loss in 2 half-moves
24 Rg4 loss in 2 half-moves
25 Rh4 loss in 2 half-moves