Mate in 2 Chess Puzzle 5
White to play and mate in 2
Friedman Numbers
Friedman numbers are positive integers that can be written as an expression of its own digits and basic arithmetic operations. While Friedman numbers don’t have much practical use, they can be fun and creative puzzles for all ages! Rules of…
Difficult Sam Loyd Chess Puzzle
In this highly difficult Sam Loyd chess puzzle from 1859, white to play and mate in 2. Sam Loyd was a widely acclaimed puzzle creator, known for his brilliant chess puzzles, visual puzzles, and math puzzles. Don’t be discouraged if…
Honkai Star Rail Detector Thief
Honkai: Star Rail features a number of interesting logic puzzles in its quests. One side quest has you questioning suspects to determine the detector thief. Similar to some classic “who is lying” logic puzzles that you might have encountered before!…
Honkai Star Rail Dissatisfied Cycrane Truth and Lie Riddle
In Honkai: Star Rail, one side quest takes you to solve a number of puzzles involving cycranes, including one fun and tricky Dissatisfied Cycrane truth and lie riddle! “I either can only tell the truth, can only tell lies, or…
Honkai Star Rail Ministry of Education Quiz Answers
Ministry of Education Quiz Honkai: Star Rail is the latest mobile game by the creators of Genshin Impact, and shortly into your gameplay, you’ll run into the Ministry of Education quiz as part of your daily quest. Over the course…
Mystery Killer Riddle
A detective is called upon to solve the riddle of the mystery killer in a high-profile murder. There are only three suspects: The victim was holding a calendar, and it seems he marked several of dates before he passed away:…
6 Tricky Lying Thief Riddles
These lying thief riddles are fun and tricky logic puzzles that will test your brain. In each puzzle, you interrogate a number of suspects, knowing that some of them are lying, and use that information and your deduction skills to…
Mate in 2 Chess Puzzle 4
White to play and mate in 2
5 Quant Brain Teasers
Whether you’re preparing for an interview or just trying to keep your mind sharp, here are some quant brain teasers to test your skills. Remember, if you get a brain teaser at an interview, you don’t necessarily need to get…
Speak Both Languages
In a certain classroom, 75% of the students can speak English, 55% of the students can speak French, and 10% speak neither language. What percentage of the students speak both languages?
Area of the Rectangle
The shaded rectangle is tangent to the circle at the two points indicated, and its bottom right corner lies on the circumference of that circle. What is the area of the rectangle?
Favorite Fruit and Favorite Color
Ava, Beth, Cam, and Derek each have a different favorite fruit and favorite color. We know their favorite fruits are apple, banana, cherry, and durian, and their favorite colors are blue, green, red, and yellow. We also know: What is…
The Monty Hall Problem Explained
The Monty Hall Problem You are on a game show in which there are three identical doors, one with a car behind it and two with goats behind them. You must pick one door, and you win if that door…
7 Matchstick Equation Puzzles
In matchstick puzzles, you are presented with an incorrect equation made using matchsticks, and you must move 1 or more matchsticks to turn it into a valid equation. You must use all of the matches, and you are not allowed…
Color of the Last Ball
There is a bag with 20 blue balls and 13 red balls. Randomly remove 2 balls from the bag: Repeat this process until there is just 1 ball remaining. What is the color of the last ball?
10 Clever Riddles with Answers
Do some creative thinking and try to solve these 10 clever riddles: Riddle #1 What do you usually have to break before you can use it? Riddle #2 What do you need to answer even though it never asks a…
Matchstick Equation 4
Move exactly 2 matches to make this a valid equation. Bonus: find two different solutions. In matchstick equation puzzles, you are not allowed to make an inequality symbol such as ≠, ≥, >, <, or ≤. That would make it…
8 Easy Rebus Puzzles for Kids
A rebus is a puzzle in which words, objects, or symbols are arranged in a way to indirectly represent a commonly known word or phrase. Solving rebus puzzles can be a fun and easy way for kids to think both…
Mate in 2 Chess Puzzle 3
White to play and mate in 2.
Maximize Triangle Area
If a triangle has two sides with lengths 3 and 4, what should the length of the third side be in order to maximize the area of the triangle?
Compound Word Puzzle 3
Compound words are words that are composed of two or more other words, like high + light = highlight. Can you make compound words out of the following three words by adding the same 4-letter word either before or after each word?…
Multiple of 24
Prove that for all prime numbers p > 3, (p2 – 1) is a multiple of 24.
Most Frequent Digit
What is the most frequent digit among the numbers between 1 and 1000 (inclusive)? Consider only base-10 whole numbers.
Same Birthday in Line
There is a long line of people waiting to see a new movie. They announce that the first person to have the same birthday as someone standing before them in the line gets to meet one of the actors in…