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This is the manner in which I was able to solve this riddle. It took me a
while, but I am certain this is the only correct answer.
I drew a chart like this:
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House 1
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House 2
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House 3
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House 4
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House 5
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Color
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Person
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Drink
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Smoke
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Pet
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and also made a place for associations, those facts that are linked
together but cannot yet go into the chart.
SO, the first time through the clues I came up with.
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House 1
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House 2
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House 3
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House 4
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House 5
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Color
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Blue
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Person
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Norwegian
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Drink
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Milk
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Smoke
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Pet
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Along
with the following direct associations:
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And
with the following adjacent associations:
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Brit - Red House
Swede - Dogs
Dane - Tea
Green House - Coffee
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Pall Mall - Birds
Yellow House - Dunhill
Blue-masters - Beer
German - Prince
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Green House to left of White House
Blends next to Cats
Horse next to Dunhill
Blends next to Water
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So analyzing these
facts we can see more associations:
1. House 3 CANNOT be Green since the owner drinks Milk, not Coffee.
2. Thus House 4 MUST be Green since it requires a house to the right. One
which is White.
3. House 1 CANNOT be Red since the Norwegian lives there.
These facts limit the house color order to ONE possible solution.
Combined with the direct associations we have...
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House 1
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House 2
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House 3
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House 4
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House 5
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Color
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Yellow
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Blue
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Red
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Green
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White
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Person
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Norwegian
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Brit
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Drink
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Milk
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Coffee
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Smoke
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Dunhill
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Pet
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Along
with the following direct associations:
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And
with the following adjacent associations:
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Swede - Dogs
Dane - Tea
German - Prince
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Pall Mall - Birds
Blue-masters - Beer
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Blends next to Cats
Horse next to Dunhill
Blends next to Water
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Now, looking for more
limitations/associations we find that:
1. The Horse must be at House 2.
2. House 1 and 3 CANNOT have Birds or Dogs nor Pall Mall.
3. Either House 2 or 5 have the Blue-masters - Beer.
4. Since the horse is at House 2, then it must also have the Dane (the Swede
has Dogs after all).
Our chart now looks like this, including the conditions "Dane -
Tea" and "Swede - Dogs".
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House 1
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House 2
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House 3
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House 4
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House 5
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Color
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Yellow
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Blue
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Red
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Green
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White
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Person
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Norwegian
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Dane
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Brit
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German
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Swede
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Drink
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Tea
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Milk
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Coffee
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Beer
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Smoke
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Dunhill
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Prince
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Blue-masters
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Pet
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Horse
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Dogs
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Remaining limitations/conditions:
1. Pall Mall - Birds
2. Blends next to Cats
3. Blends next to Water.
The remaining analysis can now be made:
1. House 3 MUST have "Pall Mall - Birds".
2. "Blends next to Cats" can now only fit with Blends at House 2
and Cats at House 1.
3. The German is now the only one without a pet, therefore owns the fish.
4. Incidentally leaving the Water for the Norwegian.
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House 1
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House 2
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House 3
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House 4
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House 5
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Color
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Yellow
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Blue
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Red
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Green
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White
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Person
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Norwegian
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Dane
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Brit
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GERMAN
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Swede
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Drink
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Water
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Tea
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Milk
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Coffee
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Beer
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Smoke
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Dunhill
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Blends
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Pall
Mall
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Prince
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Blue-masters
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Pet
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Cats
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Horse
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Birds
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FISH
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Dogs
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If you followed this analysis closely, you will see that this IS the only
possible solution...well, except for this one.
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