n: 40 m: 457 packed: 13 density: 0 nodes: 0 solveTime: 13730 buildTime: 120 solved: true
{0,14,23}
{1,11,19}
{2,28,36}
{3,9,12}
{4,20,26}
{5,21,22}
{6,31,33}
{7,37,38}
{8,16,24}
{10,34,39}
{13,25,30}
{15,29,32}
{17,18,35}