n: 40 m: 316 packed: 13 density: 0 nodes: 0 solveTime: 4130 buildTime: 60 solved: true
{0,12,21}
{1,11,39}
{2,15,24}
{3,8,17}
{4,10,19}
{5,23,28}
{6,7,16}
{13,14,27}
{18,26,37}
{20,29,30}
{22,25,31}
{32,35,36}
{33,34,38}