n: 40 m: 256 packed: 13 density: 0 nodes: 0 solveTime: 920 buildTime: 40 solved: true
{0,20,36}
{1,4,21}
{2,30,37}
{3,16,39}
{5,7,25}
{6,11,28}
{8,18,35}
{9,17,31}
{10,23,34}
{12,22,32}
{13,24,38}
{14,26,29}
{15,19,27}