n: 40 m: 332 packed: 13 density: 0 nodes: 0 solveTime: 4370 buildTime: 60 solved: true
{0,16,18}
{1,21,30}
{2,26,27}
{3,9,12}
{4,5,28}
{6,25,39}
{7,32,35}
{8,11,13}
{10,19,34}
{14,24,37}
{15,31,33}
{17,22,23}
{20,36,38}