The 13th Doll: A Fan Game of The 7th Guest – Puzzle: Number Piano Solution Guide - MGW

The 13th Doll: A Fan Game of The 7th Guest – Puzzle: Number Piano Solution Guide

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Puzzle: Number Piano

Location: It is on the Pipe Organ in the corner of the room.



Hints and Solution:

You need to press the keys on the keyboard, so that they are all pressed down.


Each key has a number on it.


Pressing any set of two keys will press a third down (or cause you to fail the puzzle).


The key that gets pressed down after you have pressed two is the sum of the two buttons you pressed (e.g. If you press 1 and 2, 3 will be pressed, because 1+2=3).


It is a good idea to make sets of 3 numbers, where a+b=c. What numbers are more problematic than others?


Try to save the lower numbers, try to make the highest numbers out of other high numbers first.


A way to solve the puzzle is the following sequence of keys:


Press 8, Press 7, Press 9, Press 5, Press 10, Press 3, Press 11, Press 1, Press 4, Press 2.


The following is the sequence with the maths, in case you wonder why this works:


Press 8, Press 7, (8+7=15) 15 is pressed automatically, Press 9, Press 5, (9+5=14) 14 is pressed automatically, Press 10, Press 3, (10+3=13) 13 is pressed automatically, Press 11, Press 1, (11+1=12) 12 is pressed automatically, Press 4, Press 2, (4+2=6) 6 is pressed automatically.


It might be quicker, in real-time, to enter the following sequence: 1, 11, 2, 4, 3, 10, 5, 9, 7, 8.




  • Doll (Left Leg) – Location: On the left hand side of the room, facing away from the door. It is on the floor, next to crossed swords and a pillar.


Completing the puzzle in and collecting all of the items (Items needed: Doll (Left Leg)) from the Chapel: unlocks the puzzle in the Doll Room.


  • Falagar

    He is the founder and editor of Magic Game World. He loved gaming from the moment he got a PlayStation 1 with Gran Turismo on his 7th birthday.

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