The Grey Labyrinth is a collection of puzzles, riddles, mind games, paradoxes and other intellectually challenging diversions. Related topics: puzzle games, logic puzzles, lateral thinking puzzles, philosophy, mind benders, brain teasers, word problems, conundrums, 3d puzzles, spatial reasoning, intelligence tests, mathematical diversions, paradoxes, physics problems, reasoning, math, science.

Ghost Post · Icarian Member

As opposed to the solution given i think this one is faster. First put Ed and a human in the boat and take the human over then Ed returns for a monkey and takes it over. The next in line is another human and then another monkey. Then Ed returns for the last human and they both get off.
The sequence is as follows:
river bank boat destination

HHHEMM
HHMM EH
HHMM E H
HHM EM HM
HM EH HM
HM E HHM
M EH HHM
M E HHHM
EM HHHM
HHHEMM

Quailman · His Postmajesty

I've never moved a thread before, but I'm going to try this one.

James · Daedalian Member

wordcross · Posted: Tue Oct 31, 2000 4:52 pm Post subject: 4

Just to agree with James, It is not feasible that Ed and a Human go first, even if the problem of 3 monkeys on the first side was ignored, there are still more problems down the road. When Ed returns with the second monkey, there are 2 monkeys and 1 man on the far side. And finally, in step 6, when Ed returns to get the last human, there are again 2 monkeys and 1 human on the first side. sorry jack, doesn't work too well.

sublimenigma · Guest

has anyone noticed that the puzzle states that there are 3 monkeys, but there are only 2 in the solution?

tv snake · Daedalian Member

Ed is a monkey, remember? (I should know

)