n: 40 m: 121 packed: 13 density: 0 nodes: 0 solveTime: 420 buildTime: 10 solved: true
{0,15,31}
{1,17,28}
{2,26,30}
{3,13,20}
{4,9,19}
{5,24,39}
{7,18,36}
{8,14,25}
{10,22,34}
{11,29,37}
{12,27,32}
{16,23,33}
{21,35,38}