n: 40 m: 478 packed: 13 density: 0 nodes: 0 solveTime: 15250 buildTime: 130 solved: true
{0,27,31}
{1,11,20}
{2,23,36}
{3,21,28}
{4,9,13}
{5,25,33}
{6,24,32}
{7,10,37}
{8,19,38}
{14,29,35}
{15,26,30}
{16,18,39}
{17,22,34}