The scene
Forest Library · Clue gameThe library’s visitors’ book ended up hidden on a shelf in the children’s game. Someone left a card with two conditions describing the chosen place.
Three activity leaders each prepared one shelf. The signs retain their numbers and colours. There is no need to open every book: just find the shelf that meets both conditions.
What we know for certain
One of these people hid the book on their own shelf, without help. Both conditions on the card are true. Each activity leader could access only their own shelf. Nobody changed signs, colours or numbers.
The three accounts
Tara Costa
Activity leader«I prepared the green shelf numbered four.»
Ulises Font
Librarian«My shelf was blue and had a two on it.»
Violeta Puig
Storyteller«I was assigned the green one numbered three.»
Examine the evidence
0 of 5 openedOpening these five clues does not cost points.
01The first condition
The card says: ‘The book is on a green shelf’.
02The second condition
It also says: ‘Its number is even’. Here, even means divisible by two with no remainder.
03Tara’s shelf
The register confirms green and the number 4. It was the only shelf prepared by Tara.
04The other shelves
Ulises had blue with the number 2; Violeta, green with the number 3. No fourth shelf took part.
05The private hiding place
Each activity leader received only the key to their own shelf and kept it throughout the game. The book was placed behind a locked door.