Cogitème’s logic games

round the circle, roundabout
Roundabouts
straight in the row, row
Rows
championship
Championships
logic system
Logic Systems

Solved examples

SAMPLE 2

Five couples live next door to each other.

(1) Allen and Karen live next to each other.
(2) Carol and Brian live next to each other.
(3) Jim lives with Sue.
(4) Liz lives in the fifth house.
(5) Steve lives with Karen.
(6) Carol’s house is before Steve’s house.
(7) Steve lives in the third house.

Step 1:

Start by filling in the easy assumptions, here numbers (3), (4), (5) and (7). Press submit on the solution to lock this information in place. This allows you to easier see the information you are sure about by showing it in green.
house Jim Sue
third Steve Karen
fifth man Liz
house man woman
house man woman

Step 2:

With the arrows on the side, you can change the order of the lines in order to put Steve on the third and Liz on the fifth. By arranging the known information in order, it is easier to figure out the rest.
house Jim Sue
house man woman
third Steve Karen
house man woman
fifth man Liz

Step 3:

Carol’s house is before Steve’s. So put Carol on the second line.
house Jim Sue
house man Carol
third Steve Karen
house man woman
fifth man Liz

Step 4:

Carol lives in either the first house or the second (step 3). Also, Carol and Brian are neighbors (2). Since Steve lives in the third house (step 1), you can deduce that Brian lives in either the first house or the second, otherwise he could not be Carol’s neighbor. Using the arrows on the side, place "Jim – Sue" on the fourth line, and then place Brian on the first line.
house Brian woman
house man Carol
third Steve Karen
house Jim Sue
fifth man Liz

Step 5:

In the column for women, there is only one empty box. Therefore, all you have to do is click on it to make the missing value appear. Thus we discover that Brian lives with Angie. Since the first two houses are occupied by Brian and Carol, we are also sure that Jim and Sue live in the fourth house.
house Brian Angie
house man Carol
third Steve Karen
fourth Jim Sue
fifth man Liz

Step 6:

Allen and Karen are neighbors (1). Therefore, Allen cannot live with Catherine since she is in the fifth house and Karen is in the third. Thus, Allen lives with Carol in the second house. You can deduce that Brian and Angie live in the first house.
first Brian Angie
second Allen Carol
third Steve Karen
fourth Jim Sue
fifth man Liz

Step 7:

Finally, the only thing left is to discover who Liz’s husband is by clicking on the corresponding box: it’s Josh!
first Brian Angie
second Allen Carol
third Steve Karen
fourth Jim Sue
fifth Josh Liz