Deepest win for white:

[Event ""] [Date "2010.08.09"] [Site ""] [White "Perfect play"] [Black "Perfect play"] [Result "1-0"] [Round ""] [GameType "20"] [FEN "W:W18:B3,4,K21,K22."] 1. 18x16 4-9 {3-9, 3-8} 2. 16-11 9-13 3. 11-6 {11-7} 13-18 4. 6-1 18-22 5. 1-23 {1-6} 22-27 6. 23-19 {23-14, 23-10, 23-5, 23-28, 23-37, 23-41, 23-46} 27-31 {3-9} 7. 19-10 {19-5, 19-23, 19-28, 19-32, 19-41, 19-46} 31-36 {3-9, 3-8} 8. 10-5 {10-23, 10-28, 10-32, 10-37, 10-46} 3-9 {3-8} 9. 5-10 {5-23, 5-28, 5-32, 5-37, 5-46} 9-13 10. 10-5 {10-14, 10-28, 10-32, 10-37, 10-46} 13-18 11. 5-10 {5-14, 5-19, 5-32, 5-37, 5-46} 18-22 12. 10-5 {10-14, 10-19, 10-23, 10-37, 10-46} 22-27 13. 5-10 {5-14, 5-19, 5-23, 5-28, 5-46} 36-41 14. 10x46 27-31 15. 46-41 {46-32, 46-28, 46-23, 46-19, 46-14, 46-10, 46-5} 31-36 16. 41-37 {41-32, 41-28, 41-23, 41-19, 41-14, 41-10, 41-5, 41-47, 41-46} 36-41 17. 37x46 1-0

Non capture positions

Win: 0 (0.0%)
Draw: 13 (0.0%)
Lose: 37.011.292 (100.0%)

Number of positions with white to win in X moves
Number of positions with white to lose in X moves
1: 8.035.323
2: 14.695.638
3: 9.644.648
4: 2.593.560
5: 1.238.329
6: 558.284
7: 84.342
8: 4.295
9: 1.199
10: 920
11: 868
12: 724
13: 637
14: 499
15: 330
16: 258
17: 160
18: 84
19: 13

All positions

Win: 22.813 (0.0%)
Draw: 38.098 (0.1%)
Lose: 46.195.079 (99.9%)

Number of positions with white to win in X moves
1: 4.582
2: 1.665
3: 1.583
4: 3.701
5: 2.630
6: 2.233
7: 1.622
8: 1.312
9: 879
10: 631
11: 655
12: 569
13: 305
14: 243
15: 118
16: 76
17: 9
Number of positions with white to lose in X moves
1: 9.862.223
2: 18.408.591
3: 12.098.577
4: 2.986.652
5: 1.415.757
6: 684.862
7: 177.247
8: 78.328
9: 60.981
10: 50.530
11: 40.088
12: 31.989
13: 26.155
14: 22.358
15: 18.153
16: 15.138
17: 13.303
18: 10.826
19: 8.672
20: 8.825
21: 7.995
22: 4.691
23: 3.071
24: 2.494
25: 2.318
26: 1.562
27: 1.064
28: 612
29: 416
30: 229
31: 145
32: 46