Having looked at Keen's clue selection code, I also notice that the

[sgt/puzzles] / keen.c

diff --git a/keen.c b/keen.c
index 175db55..8d9b6bd 100644 (file)
--- a/keen.c
+++ b/keen.c
@@ -931,7 +931,7 @@ done
                for (k = 1; k <= w; k++)
                    if (v % k == 0 && v / k <= w && v / k != k)
                        n++;
-               if (n > 1)
+               if (n > 2)
                    singletons[j] |= F_MUL;
                else
                    singletons[j] |= F_MUL_BAD;