Problems

1 – 50 of 64

Problem Title Likes Solvers Difficulty

Problem 2027. Consecutive Powers

Created by: Ted

Tags math, puzzle, poor_test_suite

Problem 2770. Probability of Choosing a Red Ball

Created by: Kevin

Tags probability, puzzle

Problem 50018. Number Puzzles - 010

Created by: Doddy Kastanya

Tags palindrome, puzzle

Problem 2052. provide the numerical answer to these number questions...

Created by: Ted

Tags math, puzzle

Problem 50392. Number Puzzle - 073

Created by: Doddy Kastanya

Tags puzzle

Problem 50008. Number Puzzles - 008

Created by: Doddy Kastanya

Tags palindrome, puzzle

Problem 50232. Number Puzzle - 044

Created by: Doddy Kastanya

Tags puzzle

Problem 50078. Number Puzzle - 022

Created by: Doddy Kastanya

Tags puzzle

Problem 1154. Identify the heavier bag

Created by: HARISANKAR PS

Tags puzzle

Problem 2359. Integer Sequence - 1

Created by: rifat

Tags logic, puzzle, interger sequence

Problem 3042. Fill-a-pix - Solution Checker

Created by: goc3

Tags game, logic, puzzle

Problem 45329. Castling-01

Created by: Asif Newaz

Tags chess, puzzle, board game

Problem 45330. Castling-02

Created by: Asif Newaz

Tags chess, puzzle, board game

Problem 44709. Toads and Frogs Puzzle

Created by: J. S. Kowontan

Tags puzzle

Problem 1978. Sokoban: Puzzle 10.45

Created by: Richard Zapor

Tags game, logic, recursion

Problem 46040. Solve a Weird Calculator puzzle

Created by: ChrisR

Tags strings, arithmetic, puzzle

Problem 45247. Tell your secret

Created by: Asif Newaz

Tags puzzle, tree

Problem 42769. GJam March 2016 IOW: Cody's Jams

Created by: Richard Zapor

Tags series, puzzle, gjam

Problem 1668. Josephus Survivor

Created by: Richard Zapor

Tags mod, puzzle

Problem 3033. Tic-Tac-Logic - Solution Checker

Created by: goc3

Tags game, checker, puzzle

Problem 51251. Locate a family on a long street

Created by: ChrisR

Tags puzzle, diophantine, pell

Problem 47518. Play Outside In with primes

Created by: ChrisR

Tags primes, puzzle, sequence

Problem 3043. Fill-a-pix - Solver (basic)

Created by: goc3

Tags game, logic, solver

Problem 2358. Word Search Solver

Created by: goc3

Tags game, solver, puzzle

Problem 44751. Lights Out 1 - 5x5, 3 moves

Created by: goc3

Tags game, logic, flip

Problem 44752. Lights Out 2 - 5x5, 4 moves

Created by: goc3

Tags game, logic, flip

Problem 44753. Lights Out 3 - 5x5, 6 moves

Created by: goc3

Tags game, logic, flip

Problem 44755. Lights Out 4 - 5x5, 8 moves

Created by: goc3

Tags game, logic, flip

Problem 44759. Lights Out 7 - 5x5, x moves

Created by: goc3

Tags game, logic, flip

Problem 44760. Lights Out 8 - 5x5, light-only solution? I

Created by: goc3

Tags game, logic, flip

Problem 44761. Lights Out 9 - 5x5, light-only solution? II

Created by: goc3

Tags game, logic, flip

Problem 44764. Lights Out 10 - 5x5, with wrapping, 6 moves

Created by: goc3

Tags game, logic, flip

Problem 44766. Lights Out 12 - 5x5, three stages, <7 moves

Created by: goc3

Tags game, logic, flip

Problem 44776. Lights Out 15 - 5x5, broken buttons I

Created by: goc3

Tags game, logic, flip

Problem 46120. Solve the Challenger puzzle

Created by: ChrisR

Tags linear algebra, arithmetic, puzzle

Problem 44238. Mastermind III: Solve in 1

Created by: Richard Zapor

Tags logic, puzzle, mastermind

Problem 45237. Queen's move - 02

Created by: Asif Newaz

Tags chess, puzzle, board game

Problem 47463. Slitherlink II: Gimmes

Created by: Richard Zapor

Tags recursion, games, puzzle

Problem 57810. List the two-bit primes

Created by: ChrisR

Tags primes, strings, puzzle

Problem 44237. Mastermind II: Solve in 8 or less

Created by: Richard Zapor

Tags logic, persistent, puzzle

Problem 44236. Mastermind I: Solve all 1296 cases

Created by: Richard Zapor

Tags logic, persistent, puzzle

Problem 44248. Mastermind V: Optimal Solver - average number of guesses

Created by: LY Cao

Tags puzzle, mastermind

Problem 47453. Slitherlink I: Trivial

Created by: Richard Zapor

Tags recursion, games, puzzle

Problem 46579. Shape Shifter - Part 1

Created by: Highphi

Tags game, matrix, puzzle

Problem 2085. Sudoku Solver - Standard 9x9

Created by: Richard Zapor

Tags logic, recursion, games

1 – 50 of 64

Difficulty Rating

Problem Groups

Problems