n: 30 m: 240 packed: 10 density: 0 nodes: 0 solveTime: 1140 buildTime: 40 solved: true
{0,12,23}
{1,17,27}
{2,14,21}
{3,6,7}
{4,8,9}
{5,11,18}
{10,26,28}
{13,15,24}
{16,25,29}
{19,20,22}