n: 40 m: 172 packed: 13 density: 0 nodes: 0 solveTime: 460 buildTime: 20 solved: true
{0,16,23}
{1,10,11}
{2,6,20}
{3,33,35}
{4,7,17}
{5,26,38}
{8,15,24}
{9,18,21}
{12,19,36}
{13,22,31}
{14,32,37}
{25,29,34}
{27,30,39}