C(33,9,2) = 18

Created by: Michael Dambmann

Lower Bound: Horsley, Theorem 14a, r=4, d=0

  1  2  3  9 10 16 19 21 22
  1  4  6  7 13 14 17 26 29
  1  5 11 15 18 28 30 31 33
  1  8 12 20 23 24 25 27 32
  2  3  5 13 15 16 19 20 25
  2  4 11 14 16 27 29 30 32
  2  6  7  8 16 18 24 26 33
  2  9 12 16 17 22 23 28 31
  3  4 12 14 18 19 23 29 33
  3  6  7 19 26 27 28 31 32
  3  8 10 11 17 19 21 24 30
  4  5  8  9 14 15 22 24 29
  4 10 14 20 21 25 28 29 31
  5  6  7 10 12 15 21 23 26
  5 15 17 18 20 25 27 32 33
  6  7  9 11 20 22 25 26 30
  8 11 12 13 23 24 28 30 31
  9 10 13 18 21 22 27 32 33