n: 40 m: 555 packed: 13 density: 0 nodes: 0 solveTime: 34750 buildTime: 180 solved: true
{0,13,23}
{1,12,18}
{2,5,9}
{4,8,22}
{6,31,34}
{7,36,39}
{10,26,30}
{11,20,28}
{14,16,24}
{15,32,37}
{17,19,21}
{25,29,33}
{27,35,38}