n: 40 m: 338 packed: 13 density: 0 nodes: 0 solveTime: 6960 buildTime: 60 solved: true
{0,17,31}
{1,14,15}
{2,18,33}
{3,26,34}
{4,9,12}
{5,22,24}
{6,7,21}
{8,23,38}
{10,11,36}
{13,20,27}
{16,30,35}
{19,28,39}
{25,32,37}