n: 40 m: 405 packed: 13 density: 0 nodes: 0 solveTime: 11380 buildTime: 90 solved: true
{0,5,9}
{1,3,36}
{2,4,15}
{6,27,38}
{7,8,29}
{10,19,31}
{11,26,35}
{12,21,33}
{13,30,37}
{14,23,32}
{16,22,24}
{17,20,25}
{18,28,39}