n: 40 m: 219 packed: 13 density: 0 nodes: 0 solveTime: 1160 buildTime: 30 solved: true
{0,19,37}
{1,16,21}
{2,17,35}
{3,10,28}
{4,38,39}
{5,20,30}
{6,25,33}
{7,15,22}
{8,24,34}
{9,11,13}
{12,23,31}
{14,18,27}
{26,29,36}