Gaining Ladder Points

When you've played a Ladder match, you gain points according to the following formula:

Win:

[your score] += max(1, round(([their score] - [your score])/2))
[their score] -= 1

Tie:

[your score] += max(0, round(([their score] - [your score])/4))
[their score] += max(0, round(([your score] - [their score])/4))

Loss:

[your score] -= 1
[their score] += max(1, round(([your score] - [their score])/2))