n: 40 m: 594 packed: 13 density: 0 nodes: 0 solveTime: 51540 buildTime: 210 solved: true
{0,23,31}
{1,29,39}
{2,7,25}
{3,14,21}
{4,13,37}
{5,32,36}
{6,28,34}
{8,22,38}
{9,17,24}
{10,15,27}
{11,16,20}
{12,19,35}
{18,26,30}