I saw once a game that ended 46-0.
The explanation for the result in that game was this:
Facoff-Win -> Center skates around the outpositioned defence that can hardly stand on their skates -> shoots -> scores = unassisted goal.
But if you look at this you´ll find out that this game was faked:
U18 Asian and Oceanic Junior Championship,
15. - 21. 3. 1998, Harbin, China
Japan - Thailand 58:0 (17:0, 21:0, 20:0)
Korea - New Zealand 28:0
China - Australia 10:1
Japan - New Zealand 38:0
Korea - Australia 22:1
China - Thailand 31:0
Australia - Thailand 24:1 (5:0, 12:1, 7:0)
China - New Zealand 26:0 (5:0, 14:0, 7-0)
Japan - Korea 2:2 (1:1, 1:0, 0:1)
New Zealand - Thailand 12:2
Japan - Australia 25:0
Korea - China 4:1
Korea - Thailand 92:0 (35:0, 24:0, 32:0)
Australia - New Zealand 15:2 (6:1, 4:0, 6:1)
Japan - China 7:1 (1:1, 5:0, 4:0)
Final Ranking
1. Korea 5 4 1 0 146: 4 9
2. Japan 5 4 1 0 130: 3 9
3. China 5 3 0 2 69: 12 6
4. Australia 5 2 0 3 42: 60 4
5. New Zealand 5 1 0 4 14:110 2
6. Thailand 5 0 0 5 3:217 0
Korea had to win the last game by a margin of 80+ goals against Thailand to put Japan behind them.