n: 40 m: 616 packed: 13 density: 0 nodes: 0 solveTime: 175220 buildTime: 220 solved: true
{0,17,33}
{1,22,28}
{2,3,6}
{4,7,27}
{5,29,32}
{8,26,31}
{9,21,25}
{10,13,19}
{11,16,34}
{12,15,39}
{14,20,38}
{18,23,35}
{30,36,37}