n: 40 m: 338 packed: 13 density: 0 nodes: 0 solveTime: 3580 buildTime: 70 solved: true
{0,7,28}
{1,18,37}
{2,5,12}
{3,6,20}
{8,32,35}
{9,16,27}
{10,21,39}
{11,14,15}
{13,22,34}
{17,23,25}
{19,30,36}
{24,31,38}
{26,29,33}