How to Solve Logic Puzzles Level 2 and 3

Solving a logic puzzle is a bit like being a detective! You need to read through the clues and
record the information in a special grid using a or an X.

Example

Three children love solving puzzles! From the clues below, can you work out the age of each
child and which is their favourite type of puzzle? The children are all different ages and like
different puzzles
Word search

Crosswords

8 years

9 years
7 years
Mazes

Sally

Filip

Anika

7 years

8 years

9 years

Clues

1. Sally is 7 years old

2. Mazes are Filip’s favourite type of puzzle

3. Anika does not enjoy word searches

4. The child who loves crosswords is 8 years old.

Clue 1 tells us that Sally is 7 years old. We can put a (tick) in the box where ‘Sally’ and
‘7 years’ meet. If Sally is 7 years old, then she can’t be 8 or 9 so we can put an X in those
boxes. Neither Filip nor Anika can be 7 years old so we can put an X in the box where ‘Filip’
and ‘7 years’ meet and where ‘Anika’ and ‘7 years’ meet.
Word search

Crosswords

8 years

9 years
7 years
Mazes

Sally X X

Filip X

Anika X

7 years

8 years

9 years

Clue 2 tells us that mazes are Filip’s favourite puzzle. We can put a in the Filip / Mazes
box. We can now put an X in the Filip / Word search and Filip / Crosswords box. Neither
Sally or Anika‘s favourite puzzle can be mazes so we can put a cross in those boxes.
Word search

Crosswords

8 years

9 years
7 years
Mazes

Sally X X X

Filip X X X

Anika X X

7 years

8 years

9 years
 Word search

Crosswords

8 years

9 years
7 years
Mazes
Sally X X X

Filip X X X

Anika X X X

7 years
Clue 3 tells us that Anika does not enjoy
8 years word searches so we can put an X in the Anika /
Word search box.
9 years

From these three clues, we can now see that Sally must be the child who likes word searches
best (as Filip and Anika do not). We can put a in this box. We can also see that Anika is
the child who likes crosswords.
Word search

Crosswords

8 years

9 years
7 years
Mazes

Sally X X X

Filip X X X

Anika X X X

7 years
Clue 4 tells us that the child who likes crosswords
8 years is 8 years old. We can put a in box where
‘Crosswords’ and ‘8 years’ meet and an X in the
9 years
other boxes in that row and column.
 Word search

Crosswords

8 years
7 years

9 years
Mazes
Sally X X X

Filip X X X

Anika X X X

7 years X
From this point, we can actually solve the puzzle
8 years X X without needing any more clues!

9 years X

Start by filling out the table with the information you have collected. Can you see that we
can work out that Filip is 9 years old? The puzzle is solved!
Word search

Crosswords

8 years
7 years

9 years
Mazes

Sally X X X

Filip X X X

Anika X X X

7 years X

8 years X X

9 years X

Child Age Puzzle

Sally 7 Word search

Filip 9 Mazes

Anika 8 Crosswords