Brain Teasers
Alien Anxiety
Logic-Grid
Logic Grid puzzles come with a handy interactive grid that will help you solve the puzzle based on the given clues.Logic-Grid
5 uniquely-shaped UFOs accidentally dropped out of space in 5 different locations over a period of 5 days from the 4th of July to July 8th and were each seen by 1 person. As a government agent, you need to quickly cover up these incidents lest they become a sensation and reveal the existence of aliens. Unfortunately, the aliens do not remember much due to the head trauma inflicted from the severe deceleration into the atmosphere. Using a combination of whatever memories the aliens had and information from the Internet, deduce when did each ship arrive, the ship's shape, who saw them, and which town they were sighted in.
1. The sighting of the horseshoe-shaped UFO was either the July 5 sighting or the report from Walnut Creek.
2. Iva Ingram's sighting was either the sighting of the egg-shaped UFO or the July 6 sighting.
3. A post from Iva Ingram on a conspiracy forum was posted 2 days before a post about a sighting from Upper Lake.
4. A description from the alien who arrived on July 7th reveals that it did not arrive above Tuscon.
5. Iva Ingram's report was submitted sometime before the sighting from Tuscon.
6. Neither the report from San Antonio nor Hal Harrison's sighting was the report of the diamond-shaped UFO.
7. Abe Alvarez's either was living in Tuscon or saw a spaceship on July 8.
8. Of Hal Harrison's sighting and Gil Gates's sighting, one involved the oval-shaped UFO and the other was from Upper Lake.
9. A post describing a teardrop-shaped UFO was posted 2 days before a description of an oval-shaped UFO.
10. The report of the teardrop-shaped UFO was submitted 1 day after the report of the egg-shaped UFO.
11. A blurry photo from Abe Alvarez reveals that he did not photograph a teardrop-shaped spaceship
12. Abe Alvarez, Flora Flynn, Gil Gates, Hal Harrison, and Iva Ingram each saw 1 spaceship over their towns: Tuscon, San Antonio, Upper Lake, Fresno, or Walnut Creek.
13. The 5 spaceships were either diamond, egg, horseshoe, oval, or teardrop-shaped.
1. The sighting of the horseshoe-shaped UFO was either the July 5 sighting or the report from Walnut Creek.
2. Iva Ingram's sighting was either the sighting of the egg-shaped UFO or the July 6 sighting.
3. A post from Iva Ingram on a conspiracy forum was posted 2 days before a post about a sighting from Upper Lake.
4. A description from the alien who arrived on July 7th reveals that it did not arrive above Tuscon.
5. Iva Ingram's report was submitted sometime before the sighting from Tuscon.
6. Neither the report from San Antonio nor Hal Harrison's sighting was the report of the diamond-shaped UFO.
7. Abe Alvarez's either was living in Tuscon or saw a spaceship on July 8.
8. Of Hal Harrison's sighting and Gil Gates's sighting, one involved the oval-shaped UFO and the other was from Upper Lake.
9. A post describing a teardrop-shaped UFO was posted 2 days before a description of an oval-shaped UFO.
10. The report of the teardrop-shaped UFO was submitted 1 day after the report of the egg-shaped UFO.
11. A blurry photo from Abe Alvarez reveals that he did not photograph a teardrop-shaped spaceship
12. Abe Alvarez, Flora Flynn, Gil Gates, Hal Harrison, and Iva Ingram each saw 1 spaceship over their towns: Tuscon, San Antonio, Upper Lake, Fresno, or Walnut Creek.
13. The 5 spaceships were either diamond, egg, horseshoe, oval, or teardrop-shaped.
Hint
While digging through the Internet an anonymous post described a cloudy night above Tuscon when the UFO was spotted. Cross-checking old weather forecasts showed that August 7th was a clear night, meaning that the sighting above Long Barn could not have occurred that day.Answer
Iva Ingram saw an egg-shaped ship above San Antonio on August 4th.Flora Fynn saw a teardrop-shaped ship above Tuscon on August 5th.
Gil Gates saw a diamond-shaped ship above Upper Lake on the 6th.
Hal Harrison saw an oval-shaped ship above Fresno on the 7th.
Abe Alvarez saw a horseshoe-shaped ship above Walnut Creek on the 8th.
Hide Hint Show Hint Hide Answer Show Answer
What Next?
View a Similar Brain Teaser...
If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.
Solve a Puzzle
Comments hidden to avoid spoilers.
Follow Braingle!