Start with any number of counters in any number of piles. 2 players take it in turns to remove any number of counters from a single pile. The loser is the player who takes the last counter.
A new card game for two players.
Some puzzles requiring no knowledge of knot theory, just a careful
inspection of the patterns. A glimpse of the classification of
knots and a little about prime knots, crossing numbers and knot
If you find Femto too easy clearly you should be getting your
teeth into a crunchier version. Of course, it's really for you to
decide what this might look like, but here are a few suggestions
for you to work through that should keep you out of trouble for the
next year or two.
A) Perhaps you feel the numbers on the cards are too easy. Try a
new set. Here's a set chosen at random: 16, 18, 24, 27, 36, 48, 65,
B) Or use a set with three-digit numbers.
C) Perhaps it's not that the numbers are too small for you, but
too big. So change the numbers on your basic Femto set from
2,3,4,5,6,7,8,10 to 1/2, 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/10 .
D) Still too easy? Here's another set with small numbers: 1/2,
0.3, 0.4, 1/5, 1/6, 0.7, 0.8, 1/10 .
E) Perhaps it's the doubling rule (Rule 4) that's too easy.
you'd better see what happens when you play with this version of
Rule 4: The round is won by the higher value cards, unless the
higher card is more than three times .... (Or two-and-a-half times,
I guess all these may be too easy as well, so let's move on. You
may need to extend your pack to 12 cards for these versions:
F) Change Rule 3: in each round of play each player puts out TWO
cards face down. Change Rule 4 as well so it's the SUM of your two
cards that decides who wins. Or the difference. Or the product.
G) If you can handle all these and you still think things are
too easy then I'm tempted to ask you to use a pack like this: 0.01,
-1/4, 2/3, -1/10, ....
At least some of these should meet your wish to have a good
game, and your noble desire to have reduced skive versions as
Many thanks for your interest. I hope you have some more fun
coming up with your own versions that are still a lot of fun but
make you sweat a little as well.