n: 40 m: 308 packed: 13 density: 0 nodes: 0 solveTime: 4450 buildTime: 60 solved: true
{0,17,32}
{1,3,16}
{2,6,24}
{4,21,30}
{5,10,19}
{7,28,37}
{8,22,23}
{9,18,26}
{12,20,34}
{13,14,27}
{15,25,33}
{29,38,39}
{31,35,36}