so what if the top prize is only a couple of million
playing 12 boards, 34 locked in;
playing 12 boards, 45 locked in;
then these in random selections to each board:
10,15,24,1
31,35,43,6,16
21,29,30
38,39,46
25,42,44.
playing 12 boards, these in random selection:
1,3,4,6
11,15,17,19
23,26,28
31,34,36,37,39,40