n: 40 m: 172 packed: 13 density: 0 nodes: 0 solveTime: 1200 buildTime: 20 solved: true
{0,20,32}
{1,18,30}
{2,9,37}
{3,11,36}
{4,25,39}
{5,21,35}
{6,24,26}
{7,23,34}
{8,12,22}
{10,14,38}
{13,16,19}
{15,31,33}
{27,28,29}