n: 40 m: 556 packed: 13 density: 0 nodes: 0 solveTime: 39630 buildTime: 180 solved: true
{0,5,38}
{1,23,25}
{2,27,31}
{3,4,6}
{8,10,24}
{9,26,34}
{11,17,35}
{12,32,33}
{13,28,36}
{14,16,30}
{15,20,21}
{18,19,29}
{22,37,39}