n: 40 m: 457 packed: 13 density: 0 nodes: 0 solveTime: 19420 buildTime: 120 solved: true
{0,12,15}
{1,17,25}
{2,16,34}
{3,10,13}
{5,9,35}
{6,24,36}
{7,11,39}
{8,22,30}
{14,19,38}
{18,21,37}
{20,26,32}
{23,27,31}
{28,29,33}