lower bound = 6

C(14,7,2) = 6

Method of Construction: simulated annealing covering

Lower Bound: Schonheim

  2  3  7  8  9 11 12
  1  2  3  5 10 11 13
  5  7  8  9 10 12 13
  1  3  4  6  7  9 14
  1  4  6  8 11 12 14
  2  4  5  6 10 13 14