n: 40 m: 258 packed: 13 density: 0 nodes: 0 solveTime: 1270 buildTime: 40 solved: true
{0,18,19}
{1,15,31}
{2,6,25}
{3,14,36}
{4,22,32}
{5,28,38}
{7,10,11}
{8,9,23}
{12,17,29}
{13,20,33}
{16,27,39}
{21,26,37}
{24,30,34}