n: 40 m: 405 packed: 13 density: 0 nodes: 0 solveTime: 7850 buildTime: 90 solved: true
{0,21,28}
{1,8,11}
{2,4,5}
{3,23,32}
{6,31,35}
{7,9,37}
{10,36,39}
{12,22,27}
{13,18,30}
{14,25,38}
{15,29,33}
{16,26,34}
{17,19,24}