n: 40 m: 381 packed: 13 density: 0 nodes: 0 solveTime: 7850 buildTime: 90 solved: true
{0,14,24}
{1,23,35}
{2,29,30}
{3,4,39}
{5,8,25}
{6,36,37}
{7,16,22}
{9,26,38}
{10,17,31}
{11,20,33}
{12,13,15}
{18,19,28}
{21,27,34}