n: 40 m: 484 packed: 13 density: 0 nodes: 0 solveTime: 31490 buildTime: 140 solved: true
{0,9,17}
{1,11,12}
{2,3,24}
{4,5,20}
{6,21,23}
{7,18,25}
{8,38,39}
{10,30,35}
{13,14,31}
{15,16,34}
{19,22,26}
{27,29,33}
{32,36,37}