Interview Puzzles

High-quality interview preparation for top tech & finance roles.

Solved
0/ 101
Efficiency
0%
All Puzzles
0/101
0%
Easy
0/31
0%
Medium
0/40
0%
Hard
0/26
0%
Deadly
0/4
0%
Difficulty:
easyprobability

Rolling the bullet

ID: 1

Unsolved
Open
easystrategy

Pirates & The Treasure

ID: 2

Unsolved
Open
easydiscrete

The Returning Explorer

ID: 3

Unsolved
Open
easygeneral

Which Switch?

ID: 4

Unsolved
Open
easyprobability

Lucky Candy

ID: 5

Unsolved
Open
easyprobability

All Girls World?

ID: 6

Unsolved
Open
easystrategy

Tigers & The Sheep

ID: 7

Unsolved
Open
easystrategy

Duck & Fox

ID: 8

Unsolved
Open
easygeneral

The Plane in the Wind

ID: 9

Unsolved
Open
easygeneral

Burning Cords

ID: 10

Unsolved
Open
easydiscrete

Pair of Socks

ID: 11

Unsolved
Open
easydiscrete

Antipodal points

ID: 12

Unsolved
Open
easyprobability

Half Time

ID: 13

Unsolved
Open
easyprobability

Monty Hall Problem

ID: 14

Unsolved
Open
easystrategy

Prisoner's Hat

ID: 15

Unsolved
Open
easystrategy

Knight and Knave

ID: 16

Unsolved
Open
easygeneral

Water & Wine

ID: 17

Unsolved
Open
easygeneral

100 Light bulbs

ID: 18

Unsolved
Open
easyprobability

UnBiased coin

ID: 19

Unsolved
Open
easyprobability

You have a train to catch!

ID: 20

Unsolved
Open
easystrategy

2 Eggs

ID: 21

Unsolved
Open
hardgeneral

e^Pi or Pi^e

ID: 22

Unsolved
Open
easygeneral

Shooting in Circle

ID: 23

Unsolved
Open
easyprobability

Invisible Dice

ID: 24

Unsolved
Open
easyprobability

Daughter or Son

ID: 25

Unsolved
Open
easygeneral

Dark Room Deck

ID: 26

Unsolved
Open
easystrategy

Cheating Husbands

ID: 27

Unsolved
Open
easyprobability

Father of lies

ID: 28

Unsolved
Open
easygeneral

Devil's Penny

ID: 29

Unsolved
Open
easyprobability

Witches at the coffee shop

ID: 30

Unsolved
Open
easystrategy

Poisonous wine

ID: 31

Unsolved
Open
easyprobability

Half Heads

ID: 32

Unsolved
Open
mediumprobability

Drunk Passenger

ID: 101

Unsolved
Open
mediumprobability

Stick to Triangle

ID: 102

Unsolved
Open
mediumdiscrete

Rabbit on the Staircase

ID: 103

Unsolved
Open
mediumdiscrete

Sharing Wood

ID: 104

Unsolved
Open
mediumstrategy

Infinity & Beyond

ID: 105

Unsolved
Open
mediumprobability

Chuck a Luck

ID: 106

Unsolved
Open
mediumdiscrete

MULTILINGUAL

ID: 107

Unsolved
Open
mediumprobability

Guess the Toss

ID: 108

Unsolved
Open
mediumprobability

Pattern on Snowflakes

ID: 109

Unsolved
Open
mediumstrategy

King's Salary

ID: 110

Unsolved
Open
mediumdiscrete

Counting on friends

ID: 111

Unsolved
Open
mediumprobability

Random Ratio

ID: 112

Unsolved
Open
mediumprobability

Second Chance

ID: 114

Unsolved
Open
mediumprobability

Innocent Monkey

ID: 115

Unsolved
Open
mediumprobability

Consecutive Heads

ID: 116

Unsolved
Open
mediumprobability

Chess Tournament

ID: 117

Unsolved
Open
mediumprobability

Number of Double Heads

ID: 118

Unsolved
Open
mediumprobability

Breaking Stick

ID: 119

Unsolved
Open
mediumstrategy

Prisoner's Hat (multicolor)

ID: 120

Unsolved
Open
mediumstrategy

Rainbow Hats

ID: 121

Unsolved
Open
mediumgeneral

2 Equations & 3 Unknowns

ID: 122

Unsolved
Open
mediumdiscrete

Domino Covering

ID: 123

Unsolved
Open
mediumdiscrete

Fruit Magic

ID: 124

Unsolved
Open
mediumdiscrete

Catching Ants

ID: 125

Unsolved
Open
mediumdiscrete

Color Complex

ID: 126

Unsolved
Open
mediumdiscrete

Light Bulbs in circle

ID: 127

Unsolved
Open
mediumdiscrete

Chocolate Bar

ID: 128

Unsolved
Open
mediumdiscrete

Dead Men Walking

ID: 129

Unsolved
Open
mediumdiscrete

Square Infection

ID: 130

Unsolved
Open
hardprobability

Colored Runs of Cards

ID: 201

Unsolved
Open
hardprobability

Drunk Ant

ID: 202

Unsolved
Open
hardprobability

Distance from North Pole

ID: 203

Unsolved
Open
hardprobability

Expected Breakup Length

ID: 204

Unsolved
Open
hardprobability

Messing with Envelops

ID: 205

Unsolved
Open
hardprobability

Collecting Lucky coupons

ID: 206

Unsolved
Open
hardprobability

The Noodles

ID: 207

Unsolved
Open
hardprobability

Distinct Number Draws

ID: 208

Unsolved
Open
hardprobability

Greed for an ACE

ID: 209

Unsolved
Open
hardprobability

Random point on disk

ID: 210

Unsolved
Open
hardprobability

Enclosing The Center

ID: 211

Unsolved
Open
hardprobability

Sum To One

ID: 213

Unsolved
Open
hardprobability

Random Walk

ID: 215

Unsolved
Open
hardprobability

Left Some Candies

ID: 216

Unsolved
Open
hardstrategy

Catching the Submarine

ID: 217

Unsolved
Open
hardstrategy

Catching the Spy

ID: 218

Unsolved
Open
hardstrategy

Pure Gold

ID: 220

Unsolved
Open
deadlystrategy

Game of Divisors

ID: 221

Unsolved
Open
hardstrategy

Counter Strike

ID: 222

Unsolved
Open
harddiscrete

Sharing a Secret

ID: 223

Unsolved
Open
harddiscrete

Weights Reckoning

ID: 224

Unsolved
Open
harddiscrete

Gas Stations on Circular Trek

ID: 225

Unsolved
Open
harddiscrete

Bricking Box

ID: 226

Unsolved
Open
mediumprobability

To Begin or Not to begin?

ID: 1002

Unsolved
Open
mediumprobability

Crazy Postman

ID: 1003

Unsolved
Open
mediumprobability

Single Bid

ID: 1004

Unsolved
Open
mediumprobability

Waiting for a Truck

ID: 1005

Unsolved
Open
mediumprobability

The Blind Archer

ID: 1006

Unsolved
Open
deadlyprobability

Bullets of Fate

ID: 1008

Unsolved
Open
deadlyprobability

Clan Size

ID: 1009

Unsolved
Open
mediumstrategy

Min & Max

ID: 1011

Unsolved
Open
deadlystrategy

Prisoner's Hat (Infinity)

ID: 1012

Unsolved
Open
mediumdiscrete

Crazy Clock

ID: 1013

Unsolved
Open
mediumdiscrete

Candy Game

ID: 1014

Unsolved
Open
mediumdiscrete

Overlapping Coins

ID: 1015

Unsolved
Open
mediumdiscrete

Scaling a Square

ID: 1016

Unsolved
Open
harddiscrete

Consecutive sums

ID: 1017

Unsolved
Open
harddiscrete

Intersecting Pillars

ID: 1018

Unsolved
Open
mediumgeneral

Weird Sequences

ID: 1019

Unsolved
Open
hardprobability

Color Switches

ID: 1020

Unsolved
Open