n: 40 m: 370 packed: 13 density: 0 nodes: 0 solveTime: 6080 buildTime: 80 solved: true
{0,12,21}
{1,15,30}
{2,3,26}
{4,5,13}
{6,19,22}
{7,11,17}
{8,9,16}
{10,33,36}
{14,25,31}
{18,27,39}
{23,24,28}
{29,34,38}
{32,35,37}