n: 40 m: 171 packed: 13 density: 0 nodes: 0 solveTime: 670 buildTime: 10 solved: true
{0,25,37}
{1,35,38}
{2,9,12}
{3,23,31}
{4,15,39}
{5,22,34}
{6,7,21}
{8,14,20}
{10,27,29}
{11,24,26}
{13,18,36}
{16,19,32}
{28,30,33}