n: 40 m: 476 packed: 13 density: 0 nodes: 0 solveTime: 21410 buildTime: 130 solved: true
{0,30,33}
{1,20,22}
{2,32,38}
{3,16,28}
{4,19,21}
{5,26,34}
{6,9,18}
{7,15,17}
{8,11,31}
{10,12,29}
{13,25,39}
{14,23,27}
{24,36,37}