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Incubator Q&A

Welcome to the staging ground for new communities! Each proposal has a description in the "Descriptions" category and a body of questions and answers in "Incubator Q&A". You can ask questions (and get answers, we hope!) right away, and start new proposals.

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Incubator Q&A Draw the boundaries of the eight dominoes

Eight different dominoes lie on a plane. No boundaries between the dominoes are shown in the figure. Draw these boundaries. Clarifications: A domino is made up two square halves joined at a com...

2 answers  ·  posted 1mo ago by will.octagon.gibson‭  ·  last activity 1mo ago by trichoplax‭

Question puzzles
#3: Post edited by user avatar will.octagon.gibson‭ · 2026-08-06T01:17:06Z (about 1 month ago)
More clarification
  • Eight different [dominoes](https://en.wikipedia.org/wiki/Dominoes) lie on a plane. No boundaries between the dominoes are shown in the figure. Draw these boundaries.
  • ![4x4 grid of dominoes with pip counts of 0,0,1,3 / 1,1,0,3 / 2,3,3,2 / 3,2,2,1](https://proposals.codidact.com/uploads/kglo87upd75nomqu2gc7n959u03o)
  • ### Clarifications:
  • A domino is made up two square halves joined at a common edge.
  • In the figure above you see 16 domino halves. A domino consists of two horizontally or vertically adjacent halves.
  • Each domino half has zero or more dots on it. These dots are called pips.
  • For the purposes of this question, there is no restriction on the number of pips on the halves of one domino. For each domino, the number of pips on its two halves might be the same or different.
  • The question states that all domino are different. This means that if one of the dominos contains $M$ pips in one half and $N$ pips in the other half, there can’t be another domino with $M$ pips **AND** $N$ pips on its two halves.
  • ---
  • Attribution:
  • Quantum Magazine, November/December 1999
  • Art by Pavel Chernusky
  • Eight different [dominoes](https://en.wikipedia.org/wiki/Dominoes) lie on a plane. No boundaries between the dominoes are shown in the figure. Draw these boundaries.
  • ![4x4 grid of dominoes with pip counts of 0,0,1,3 / 1,1,0,3 / 2,3,3,2 / 3,2,2,1](https://proposals.codidact.com/uploads/kglo87upd75nomqu2gc7n959u03o)
  • ### Clarifications:
  • A domino is made up two square halves joined at a common edge.
  • In the figure above you see 16 domino halves. A domino consists of two horizontally or vertically adjacent halves.
  • Each domino half has zero or more dots on it. These dots are called pips.
  • For the purposes of this question, there is no restriction on the number of pips on the halves of one domino. For each domino, the number of pips on its two halves might be the same or different.
  • The question states that all domino are different. This means that if one of the dominos contains $M$ pips in one half and $N$ pips in the other half, there can’t be another domino with $M$ pips **AND** $N$ pips on its two halves.
  • The boundaries to be drawn are the outlines of each domino.
  • ---
  • Attribution:
  • Quantum Magazine, November/December 1999
  • Art by Pavel Chernusky
#2: Post edited by user avatar will.octagon.gibson‭ · 2026-08-06T01:14:24Z (about 1 month ago)
Explained dominos for this puzzle
  • Eight different [dominoes](https://en.wikipedia.org/wiki/Dominoes) lie on a plane. No boundaries between the dominoes are shown in the figure. Draw these boundaries.
  • ![4x4 grid of dominoes with pip counts of 0,0,1,3 / 1,1,0,3 / 2,3,3,2 / 3,2,2,1](https://proposals.codidact.com/uploads/kglo87upd75nomqu2gc7n959u03o)
  • ---
  • Attribution:
  • Quantum Magazine, November/December 1999
  • Art by Pavel Chernusky
  • Eight different [dominoes](https://en.wikipedia.org/wiki/Dominoes) lie on a plane. No boundaries between the dominoes are shown in the figure. Draw these boundaries.
  • ![4x4 grid of dominoes with pip counts of 0,0,1,3 / 1,1,0,3 / 2,3,3,2 / 3,2,2,1](https://proposals.codidact.com/uploads/kglo87upd75nomqu2gc7n959u03o)
  • ### Clarifications:
  • A domino is made up two square halves joined at a common edge.
  • In the figure above you see 16 domino halves. A domino consists of two horizontally or vertically adjacent halves.
  • Each domino half has zero or more dots on it. These dots are called pips.
  • For the purposes of this question, there is no restriction on the number of pips on the halves of one domino. For each domino, the number of pips on its two halves might be the same or different.
  • The question states that all domino are different. This means that if one of the dominos contains $M$ pips in one half and $N$ pips in the other half, there can’t be another domino with $M$ pips **AND** $N$ pips on its two halves.
  • ---
  • Attribution:
  • Quantum Magazine, November/December 1999
  • Art by Pavel Chernusky
#1: Initial revision by user avatar will.octagon.gibson‭ · 2026-08-05T21:21:49Z (about 1 month ago)
Draw the boundaries of the eight dominoes
Eight different [dominoes](https://en.wikipedia.org/wiki/Dominoes) lie on a plane. No boundaries between the dominoes are shown in the figure. Draw these boundaries.  

![4x4 grid of dominoes with pip counts of 0,0,1,3 / 1,1,0,3 / 2,3,3,2 / 3,2,2,1](https://proposals.codidact.com/uploads/kglo87upd75nomqu2gc7n959u03o)

---

Attribution:  

Quantum Magazine, November/December 1999  
Art by Pavel Chernusky