n: 40 m: 641 packed: 13 density: 0 nodes: 0 solveTime: 418440 buildTime: 240 solved: true
{0,24,27}
{1,25,30}
{2,20,31}
{3,22,39}
{4,36,38}
{5,33,35}
{6,7,14}
{8,9,26}
{10,16,17}
{11,12,34}
{13,19,21}
{15,23,32}
{28,29,37}