Guess the Word
A hard-tier problem at 38% community acceptance, tagged with Array, Math, String. Reported in interviews at Verily and 4 others.
Guess the Word is a hard interactive problem that flips the usual coding interview script. Instead of you solving for an input, you're solving for a hidden word by making guesses and interpreting feedback. Google, Apple, Dropbox, Verily, and Verkada have all asked it. The 37% acceptance rate tells you most candidates bomb this one because they treat it like a standard search problem when it's actually about game theory and information theory. If you hit this live and blank on the strategy, StealthCoder surfaces a working approach in seconds, invisible to the proctor.
Companies that ask "Guess the Word"
Guess the Word is the kind of problem that decides whether you pass. StealthCoder reads the problem on screen and surfaces a working solution in under 2 seconds. Invisible to screen share. The proctor sees nothing. Made by a working FAANG engineer who treats the OA the way companies treat hiring: as a game with rules you should know.
Get StealthCoderThe trap is thinking you can brute-force or binary-search your way to the answer. The real problem is that your feedback is sparse and adversarial: you guess a word, get told how many letters match, and have to narrow down from there with minimal information per guess. The trick is recognizing this as a minimax problem where you want to pick guesses that eliminate the most invalid candidates, not guesses most likely to be correct. Most candidates either guess randomly or try to guess the actual word too early. The optimal strategy groups remaining candidates by their match-count feedback pattern and picks a guess that creates the most balanced partition. StealthCoder hedges the live assessment if you haven't internalized this game-theoretic framing before your OA.
Pattern tags
You know the problem.
Make sure you actually pass it.
Guess the Word recycles across companies for a reason. It's hard-tier, and most candidates blank under the timer. StealthCoder is the hedge: an AI overlay invisible during screen share. It reads the problem and surfaces a working solution in under 2 seconds. Made by a working FAANG engineer who treats the OA the way companies treat hiring: as a game with rules you should know. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Guess the Word interview FAQ
Why is Guess the Word harder than it looks?+
It's not a search or sorting problem dressed up as interactive. It's information theory and game theory. You're not finding a word; you're extracting maximum information per guess to shrink the candidate set fastest. Most candidates treat it like binary search and run out of guesses.
Do I really need to know game theory to solve this?+
Not formally, but you need to think like an adversary. Pick guesses that partition the remaining word list as evenly as possible by match-count feedback, not guesses that are 'good' candidates themselves. That's the core insight.
Is this still asked at FAANG companies?+
Yes. Google, Apple, and Dropbox have reported it in recent cycles. It's not a frequency problem; it's a 'if it shows up, you're unprepared' problem. That's why the acceptance rate sits at 37%.
How does interactive tie into the topics Array, String, and Math?+
You iterate over a word list (Array), compare strings character by character (String), and use combinatorics or heuristics to rank guess quality (Math). Interactive just means the judge gives feedback after each guess.
What's the most common failure mode?+
Guessing random words or words from the valid set, hoping to get lucky. You hit the guess limit because you're not extracting information efficiently. The right move is to pick a guess that maximizes information gain, even if it's not a valid target word.
Want the actual problem statement? View "Guess the Word" on LeetCode →