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Puzzle | Place numbers 1 to 9 in a Circle such that sum of every triplet in straight line is 15

Puzzle | (Round table coin game)

Last Updated : 18 Jan, 2023

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Suppose two player, player A and player B have the infinite number of coins. Now they are sitting near a perfectly round table and going to play a game. The game is, in each turn, a player will put one coin anywhere on the table (not on the top of coin already placed on the table, but on the surface of the table). And the player who places the last coin on the table will win the game. Given player A will always move first suggest a strategy such that player A will always win, no matter how player B will play. Solution: On the first move place the coin on the center of the table. Then player B will place his coin anywhere on the table. Now, you put your coin on the line of diameter passing through the coin placed by player B, at the same distance away from the boundary of the circle (i.e mimic his placement on the opposite side of the table). Refer figure for better understanding. If player A has space to place a coin, so will player B. Player B will run out of place before player A.

Puzzle | Place numbers 1 to 9 in a Circle such that sum of every triplet in straight line is 15

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Anuj Chauhan

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There is an 8 by 8 chessboard in which two diagonally opposite corners have been cut off. You are given 31 dominos, and a single domino can cover exactly two squares. Can you use the 31 dominos to cover the entire board? Answer: No Explanation: At first, it seems that there were 8*8 = 64 squares the

Puzzle | Three Squares

Given four sticks of length 'a' and four more sticks of length 'b'. The length of 'b' is exactly half of the length of 'a'. The task is to make three equal squares using the given 8 sticks. Solution: Below are the steps to make three equal squares from the given sticks: 1. Place the first stick of l

Puzzle | Maximum pieces that can be cut from a Circle using 6 straight lines

PUZZLE:Given a Circle and Six Straight Lines. What is the maximum number of pieces that one can cut the circle using these six straight lines?SOLUTION:Using six lines, we can cut the circle into 22 pieces at maximum.Using one line, the circle can be divided into two parts.Two lines divide the circle

Puzzle | Splitting a Cake with a Missing Piece in two equal portion

Problem Statement: There are three friends who ordered a rectangular cake. One of them was in a hurry so he cut a rectangular piece from the cake. The piece could be of any arbitrary size(less than the size of the cake) and rotation. Now the remaining two friends want to divide the remaining cake in

Puzzle 48 | Rectangular Cardboard

Given, a rectangular cardboard with a rectangular piece removed(of any size and orientation) how one can cut the rectangular cardboard in two equal parts with one straight line cut. Solution: Using the fact: that â€œany line passing through the center of a rectangle divides the rectangle into two equa

Puzzle | Dividing a Square into N smaller squares

Puzzle: Find all values of N for which one can dissect a square into N smaller squares, and outline an algorithm for doing such a dissection. Solution: The basic point to observe is a square has 4 right-angles. So, to divide it into smaller squares each of its right-angle must fall into another squa

Rubik's Cube

Algorithm to solve Rubik's Cube

A Rubik's Cube is an interesting puzzle invented by Erno Rubik, which has 43 quintillion possible configurations. But with the use of certain algorithms, it can be solved easily. There are many variations of the Rubik's cube nowadays, but the most basic one is the 3x3x3 Rubik's cube.A 3x3x3 Rubik's

Rubik's Cube Facts and Questions

What is a Rubik's Cube?The Rubikâ€™s Cube is a 3-D combination Puzzle that was invented in 1974 by Hungarian sculptor and professor of architecture ErnÅ‘ Rubik. Rubikâ€™s Cube is a Puzzle with a six-coloured cube, whose faces each include nine squares, eight of which can be rotated separately. In this ar

Brain Teasers

What are Brain Teasers?Brain teasers are puzzles or problems that are designed to stimulate and challenge the brain. They often require creative thinking, problem-solving skills, and the ability to think outside the box. Brain teasers come in various forms, including riddles, puzzles, and logic game

Crossword Puzzle

Crossword Puzzle Of The Week #1 (for DSA)

In this issue of Crossword Puzzle of the week, we will dive into the topics of Data Structures and Algorithms (DSA). The solution to the crossword puzzle is provided at the end. Crossword Puzzle #1 - by GeeksforGeeksHINTS: Down: 1. A ______ is like a line waiting to purchase tickets, where the first

Crossword Puzzle Of The Week #2 (for Computer Science and Applications)

In this issue of Crossword Puzzle of the week, we will dive into the topics of Computer Science and Applications. The solution to the crossword puzzle is provided at the end. Crossword Puzzle Of The Week #2 (for Computer Science and Applications) HINTS: ACROSS:1. The ........ number system consists

Crossword Puzzle Of The Week #3 (for Database and Queries)

In this issue of Crossword Puzzle of the week, we will dive into the topics of Database and Queries. The solution to the crossword puzzle is provided at the end. Crossword Puzzle Of The Week #3 (for Databases and Queries)HINTS: DOWN: 1. _______ gives a logical structure of the database graphically?2

Crossword Puzzle Of The Week #4 (for Object Oriented Programming)

In this issue of Crossword Puzzle of the week, we will dive into the topics of Object Oriented Programming. The solution to the crossword puzzle is provided at the end. Crossword Puzzle Of The Week #2 (for Object-Oriented Programming)HINTS: DOWN 1. The class members declared as _____ can be accessed

Crossword Puzzle Of The Week #5 (for Operating System)

In this issue of Crossword Puzzle of the week, we will dive into the topics of Operating Systems. The solution to the crossword puzzle is provided at the end. Crossword Puzzle Of The Week #5 (for Concepts of Operating System)HINTS: DOWN 1. Part of the operating system which is responsible for file m

Top 100 Puzzles Asked In Interviews

Puzzles are asked in Interviews to check our problem-solving skills. Here we are providing you with the top 100 puzzles that are asked in Interviews. The main aim of puzzles is entertainment. Puzzles can be of many types:- picture puzzles, logical puzzles, mathematical puzzles, etc. It is very helpf

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