n: 40 m: 144 packed: 13 density: 0 nodes: 0 solveTime: 3690 buildTime: 10 solved: true
{1,15,24}
{2,28,36}
{3,4,32}
{5,30,33}
{6,8,12}
{7,13,34}
{9,17,20}
{10,19,29}
{11,16,26}
{14,22,25}
{18,21,39}
{23,31,38}
{27,35,37}