This is about Nelson, a serial killer who, after each murder, leaves a chess diagram in the scene of the crime. These chessboards give the detectives the opportunity to decipher where, how and when Nelson will perform again. (Note: you should know how chess is played and how chessboard squares are enumerated).
Detectives Brandon and Makeda are the two agents in charge of these murders. Brandon, who is the superior of Makeda, won’t forget his black hat under any circumstance. There are also 2 things worth noting:
- Both detectives are left-handed.
- When investigating a corpse, they like keeping as close as possible to it.
Scene 1 (26/Jan/2016)
It is known this was the second victim of Nelson; the remains of the first victim were never found.
The lifeless body of a 19 year-old teenager was found hanging upside-down a tree. Right under the body, detectives found the first diagram and a very particular weapon next to it. Under the diagram there was a note:
You first, Makeda. Do it the best you can. And remember: I'm always one step ahead of you both.
Scene 2 (27/Feb/2016)
At the scene, the detectives found an old man’s body, with two shots to the head. Next to the body, there were three bullets; it seems that one of them was never used. The serial killer left this chessboard, with some g/unpowder spread all over the pieces. There was a note:
I love how weak my victims are, detectives. That's the beauty behind murdering people.
Scene 3 (10/Apr/2016)
Detectives were feeling really agitated. Three murders in less than 3 months. They needed to stop this massacre, so this last chessboard was crucial to find a pattern and predict the next place for a possible crime.
A beautiful, mid-aged woman had her hands and feet tied down, three shots to the chest. She was lying on the grass, and there was no evidence she had been abused. Again, the typical chessboard next to her, with a note:
You move again, detectives. And know, by the way, I just broke down your car. Mine is wrecked as well, but that won't stop me.
Know, by the way, that while you are reading this note, I am killing my 5th victim! There I won't leave any chessboards whatsoever. Will you stop me before I kill my 6th victim?
Scared of what they just read, they knew there was going to be a 5th victim. Having these diagrams and notes, detectives need to find out:
- Where (square) will the detectives find the 5th poor soul?
- Where (square) will Nelson try to kill his 6th victim?
- When (day and month) does Nelson intend to kill the 6th victim?
- Can you say anything about how (weapon/method) Nelson intends to murder his 5th victim?
- Nelson said he wouldn't leave any chessboards in Scene 4, but if he did, what would that chessboard be?
(Note: the dates indicated for each scene, are the dates for which detectives Brandon and Makeda find a dead body on the scene of the crime. This concides with the date when the next victim is being murdered.)
First, try to determine what role each piece play (i.e. Brandon, Makeda, Nelson and the Victim). You will note there are two extra pieces. Read through all notes carefully, and in particular, the 3rd note will give you a clue of what those 2 excess pieces are.
The number of shots doesn't mean anything - it just adds value to the story. The date of crimes doesn't mean anything either, but they do follow a pattern you need to guess.
Detectives suspect that the weapons used to commit the crimes will help them identify which chess piece is playing the role of the serial killer. As some of you have noticed, I wrote g/unpowder instead of gunpowder, and this is not casual. By the way, detectives need to know the name of the weapon used in Scene 1. Can you help them?