n: 40 m: 508 packed: 13 density: 0 nodes: 0 solveTime: 31290 buildTime: 160 solved: true
{0,8,21}
{1,9,29}
{2,7,19}
{3,33,39}
{4,31,37}
{5,15,16}
{6,11,23}
{10,35,36}
{12,13,30}
{14,17,18}
{20,22,34}
{25,26,38}
{27,28,32}