n: 40 m: 509 packed: 13 density: 0 nodes: 0 solveTime: 10260 buildTime: 160 solved: true
{0,20,36}
{1,17,37}
{2,13,27}
{3,8,25}
{4,6,35}
{5,15,30}
{7,9,26}
{10,11,21}
{12,32,39}
{16,23,34}
{18,22,33}
{19,28,38}
{24,29,31}