n: 40 m: 280 packed: 13 density: 0 nodes: 0 solveTime: 6580 buildTime: 50 solved: true
{0,6,35}
{1,23,26}
{2,20,37}
{3,4,7}
{5,27,38}
{8,19,34}
{9,13,31}
{10,16,29}
{11,21,24}
{12,18,22}
{14,28,33}
{15,17,32}
{25,36,39}