n: 40 m: 286 packed: 13 density: 0 nodes: 0 solveTime: 2180 buildTime: 50 solved: true
{0,28,36}
{1,5,9}
{2,6,14}
{3,29,38}
{7,22,39}
{8,18,27}
{10,17,25}
{11,12,35}
{13,34,37}
{15,19,32}
{16,26,30}
{20,23,33}
{21,24,31}