playing 40 boards, mixing up LD's 1,2,4,8,9/ one double set (ie- 12,22....9,19) on each board, no particular emphasis on any number......
playing 10 boards, each with 2 LD's " 0 " -- othe 4 #'s all LD's below 6, and either all odd or all even.....eg., 10,20,1,13,25,45...no particular emphasis on any number, only that 3 pairs of LD's show up on each board......