n: 40 m: 236 packed: 13 density: 0 nodes: 0 solveTime: 1260 buildTime: 30 solved: true
{0,9,15}
{1,12,25}
{2,30,35}
{3,14,26}
{4,10,36}
{5,11,28}
{6,21,22}
{7,24,32}
{8,13,39}
{16,23,29}
{18,27,31}
{19,20,37}
{33,34,38}