n: 40 m: 544 packed: 13 density: 0 nodes: 0 solveTime: 33510 buildTime: 180 solved: true
{0,15,31}
{1,25,26}
{2,9,10}
{3,36,39}
{4,16,32}
{5,33,38}
{6,12,23}
{7,11,27}
{8,18,34}
{13,19,28}
{14,21,30}
{17,22,37}
{20,24,35}