n: 40 m: 290 packed: 13 density: 0 nodes: 0 solveTime: 4360 buildTime: 50 solved: true
{0,18,23}
{1,22,32}
{2,9,17}
{3,7,15}
{4,25,37}
{5,10,12}
{6,16,24}
{8,26,38}
{11,31,34}
{14,30,33}
{19,28,35}
{20,21,39}
{27,29,36}