n: 40 m: 487 packed: 13 density: 0 nodes: 0 solveTime: 27310 buildTime: 130 solved: true
{0,12,39}
{1,19,31}
{2,20,23}
{3,6,16}
{4,14,27}
{5,10,21}
{7,11,32}
{8,9,30}
{13,26,37}
{15,28,35}
{17,18,29}
{22,25,34}
{33,36,38}