n: 30 m: 331 packed: 10 density: 0 nodes: 0 solveTime: 5480 buildTime: 60 solved: true
{0,9,10}
{1,4,21}
{2,5,6}
{3,19,20}
{7,11,14}
{8,15,17}
{12,25,28}
{13,23,26}
{16,18,24}
{22,27,29}