# Lichtenberg’s Riddle

While ambling about your local cemetery, you stumble upon a grave marker situated before a six-grave plot. Glancing down, you notice an inscription upon the family stone. It reads:

Here lie…

2 Grandmothers with their 2 Granddaughters
2 Husbands with their 2 Wives
2 Fathers with their 2 Daughters
2 Mothers with their 2 Sons
2 Maidens with their 2 Mothers
2 Sisters with their 2 Brothers…

Yet but 6 corpses all lie buried here,

All born legitimate, from incest clear.

How is this possible?

### 3 guesses to Lichtenberg’s Riddle

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• Luca

Phew, i needed to make a scheme for this one.

(Female) Person 1:
-Grandmother of person 5
-Mother of person 3
-Mother-in-law of person 6

(Female) Person 2:
-Grandmother of person 6
-Mother of person 4
-Mother-in-law of person 5

(Male) Person 3:
-Son of person 1
-Brother-in-law of person 4
-Father of person 5
-Was initially married to another, divorced and married with person 6

(Male) Person 4:
-Son of person 2
-Brother-in-law of person 3
-Father of person 6
-Was initially married to another, divorced and married with person 5

(Female) Person 5:
-Granddaughter of person 1
-Sister-in-law of person 6
-Daughter of person 3
-Married to person 4

(Female) Person 6:
-Granddaughter of person 2
-Sister-in-law of person 5
-Daughter of person 4
-Married to person 3

Sidenote: Person 5 and 6 were born before the divorces so they aren’t result of incest

• Crabman

This is simular to a scenario in the book “With a Tangled Skein” in the Incarnations of Immortality series by Peirce Anthony. Two women married each others sons and each had a daughter. A diagram would be best, as that’s what I have on paper

GM1      GM2
|   \   /   |
|    \ /    |
|     X    |
|    / \    |
S1–/    \–S2
|         |
|         |
D2    D1

GM = Grand Mother
S = Son
D = Daughter

• Both of you are a winner today! Your complete solutions are concise.
1: Two women each have a son from a previous marriage (not buried).
2) The sons marry the woman who is not their mother.
3) The sons and the women each have a daughter that never marries.
It is also the plot of this movie.