n: 40 m: 562 packed: 13 density: 0 nodes: 0 solveTime: 22870 buildTime: 180 solved: true
{0,2,23}
{1,34,35}
{3,4,39}
{5,30,33}
{6,16,28}
{8,27,36}
{9,10,17}
{11,25,38}
{12,26,29}
{13,14,15}
{18,24,31}
{19,21,22}
{20,32,37}