Wednesday, May 8, 2013

1-9 with 2d6

I read a thread about Dave Arneson's First Fantasy Campaign right before I went to bed, and this is the first think that popped into my head when I woke up.

On a d6, assume that a roll of 1-2 = 1, 3-4 = 2, and 5-6 = 3.  Roll 2d6, and multiply. This gives a flat result of 1-9.

EDIT: As pointed out in the comments, this is not flat at all. That's what I get for posting while half asleep. As Dallas M on G+ pointed out, 3 * (1d3 - 1) + (1d3 - 1) + 1 produces the desired results. And his further formulation is even better:

Start with range 1-9.
Roll 1d3: that chooses one of the subranges 1-3, 4-6 or 7-9.
Roll 1d3: that chooses a result in the chosen subrange.

3 comments:

  1. I have a bunch of these: http://www.amazon.com/gp/aw/d/B001EQT924

    ReplyDelete
  2. It's not a flat 1-9.

    1 2 3
    1 1 2 3
    2 2 4 6
    3 3 6 9

    1, 2, 2, 3, 3, 4, 6, 6, 9

    ReplyDelete
  3. You can also do 1-4. 1-12, 1- 18, 1-36 with 2d6.

    ReplyDelete