n: 40 m: 213 packed: 13 density: 0 nodes: 0 solveTime: 930 buildTime: 30 solved: true
{0,12,15}
{1,20,33}
{2,26,29}
{3,22,28}
{4,6,36}
{5,25,30}
{7,16,34}
{8,11,31}
{9,18,23}
{10,17,27}
{13,37,39}
{14,24,32}
{19,21,38}