n: 30 m: 237 packed: 10 density: 0 nodes: 0 solveTime: 420 buildTime: 30 solved: true
{0,4,7}
{1,18,25}
{2,22,26}
{3,6,24}
{5,15,16}
{8,14,28}
{9,13,29}
{10,11,23}
{12,17,27}
{19,20,21}