n: 40 m: 326 packed: 13 density: 0 nodes: 0 solveTime: 8520 buildTime: 60 solved: true
{0,28,36}
{1,33,38}
{2,22,37}
{3,6,13}
{4,24,32}
{5,14,35}
{7,15,23}
{8,26,29}
{10,16,30}
{11,12,31}
{17,20,34}
{18,25,39}
{19,21,27}