n: 40 m: 352 packed: 13 density: 0 nodes: 0 solveTime: 3940 buildTime: 70 solved: true
{0,9,23}
{1,3,16}
{2,6,28}
{4,17,22}
{5,27,32}
{7,21,35}
{8,33,38}
{10,11,34}
{12,30,31}
{13,25,37}
{15,20,36}
{18,26,39}
{19,24,29}