n: 40 m: 457 packed: 13 density: 0 nodes: 0 solveTime: 34180 buildTime: 130 solved: true
{0,13,35}
{1,29,39}
{2,17,27}
{3,14,18}
{4,20,36}
{5,23,24}
{6,7,8}
{9,30,34}
{10,31,32}
{11,12,28}
{15,22,37}
{16,21,25}
{19,26,38}