n: 40 m: 398 packed: 13 density: 0 nodes: 0 solveTime: 12530 buildTime: 90 solved: true
{0,21,31}
{1,20,27}
{2,6,12}
{3,14,15}
{4,34,37}
{5,10,18}
{7,13,30}
{8,22,32}
{9,17,25}
{11,16,19}
{23,24,35}
{26,33,38}
{28,36,39}