n: 40 m: 323 packed: 13 density: 0 nodes: 0 solveTime: 3090 buildTime: 60 solved: true
{0,8,23}
{1,20,31}
{2,17,19}
{3,5,26}
{4,12,14}
{6,28,35}
{7,32,36}
{9,13,30}
{10,15,16}
{11,25,38}
{18,21,34}
{24,27,29}
{33,37,39}