n: 40 m: 238 packed: 13 density: 0 nodes: 0 solveTime: 1290 buildTime: 30 solved: true
{0,20,32}
{1,14,29}
{2,16,39}
{3,10,25}
{4,9,28}
{5,27,31}
{6,21,35}
{7,12,26}
{8,17,23}
{11,15,19}
{13,30,36}
{22,37,38}
{24,33,34}