Card Number Validation in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 524th andrewjc2000 550 117 6 May 2025 527th msbranicky 550 185 20 Jan 2025 528th mousetail 🇳🇱 547 94 3 Oct 2024 529th emgordon154 546 52 3 Nov 2024 530th elgan65536 546 118 2 Oct 2024 530th logvp 546 118 6 Oct 2024 530th ahmetdemirag 🇨🇾 546 118 6 Feb 2025 533rd mousetail 🇳🇱 546 128 3 Oct 2024 534th zakariamouhid 544 118 1 Oct 2024 535th xyangst 543 171 1 Oct 2024 536th jtaxen 541 119 21 Oct 2024 536th psbpsbp 541 119 19 Dec 2024 536th klixel 🇨🇦 541 119 9 Apr 2025 539th najs91 540 131 15 Oct 2024 539th bac0id 540 131 9 Jan 2025 541st eranws 539 119 23 Dec 2024 542nd TaserTheFox 🇺🇸 537 120 8 Oct 2024 542nd yokasuretsu 537 120 26 Jan 2025 542nd Troon 537 120 17 Feb 2025 545th Sciman101 536 147 26 Mar 2025 546th janAkali 🇷🇺 532 167 8 Oct 2024 547th msbranicky 531 175 13 Dec 2024 548th deancureton 530 121 30 Dec 2024 549th chartung17 528 122 24 Mar 2025 550th msbranicky 527 126 9 Jan 2025 551st CaedenHarper 🇨🇦 524 109 9 Oct 2024 552nd msbranicky 524 123 3 Oct 2024 552nd bobbysq 524 123 5 Oct 2024 552nd wuzekai518 524 123 8 Oct 2024 552nd vhoulbreque 🇫🇷 524 123 4 Feb 2025 556th galloj 🇨🇿 522 112 4 Oct 2024 557th NotEvenIndian 519 124 22 Oct 2024 557th ridingqwerty 🇺🇸 519 124 16 Jan 2025 559th bnic24 515 125 3 Oct 2024 559th adoxography 515 125 22 Oct 2024 561st sidok 514 109 13 Nov 2024 562nd nephila-nacrea 🇬🇧 509 77 2 Oct 2024 563rd dokutan 509 143 19 Oct 2024 564th KatieLG 🇬🇧 509 146 2 Oct 2024 565th CatsAreFluffy 507 127 30 Oct 2024 565th WillowWispy 507 127 25 May 2025 567th Chinay-Domitrix 🇺🇸 507 131 30 Mar 2025 568th KatieLG 🇬🇧 506 140 1 Oct 2024 569th msbranicky 505 138 3 Oct 2024 570th lelbal 503 128 2 Oct 2024 570th Lv0Sys 🇵🇱 503 128 22 days ago 572nd albanian-laundromat 499 88 5 days ago 573rd madex 🇩🇪 499 129 2 Oct 2024 573rd RedzGoose 🇦🇺 499 129 15 Oct 2024 573rd calebaitken 499 129 11 Apr 2025 576th MeWhenI 🇻🇦 499 149 4 Oct 2024 577th Europe2048 495 130 2 Oct 2024 577th nstearns96 🇬🇧 495 130 2 Oct 2024 577th rollershutter 495 130 10 Jan 2025 577th Stockoh 🇫🇷 495 130 3 days ago 581st jlangvand 495 141 15 Oct 2024 581st HumanoidCPU 495 141 7 Mar 2025 583rd inverseLorentz 🇦🇺 492 131 7 Oct 2024 583rd sciencejiho 492 131 11 Feb 2025 583rd Jaydosu 492 131 11 Apr 2025 586th TheRealOhead 🇺🇸 490 131 1 Oct 2024 587th HumanoidCPU 488 145 5 Oct 2024 588th Mabeloid 🇳🇴 484 133 2 Oct 2024 588th Emutis 🇱🇹 484 133 4 Feb 2025 590th h-hh-hhh 🇺🇦 484 177 2 Nov 2024 591st Mabeloid 🇳🇴 482 145 2 Oct 2024 592nd alphafalfa 477 92 8 Nov 2024 593rd KatieLG 🇬🇧 476 108 13 Oct 2024 594th KatieLG 🇬🇧 476 120 1 Oct 2024 595th mitzal 476 180 9 Feb 2025 596th h-hh-hhh 🇺🇦 475 147 2 Nov 2024 597th sciencedjinn 473 136 8 Nov 2024 597th ihatethefrench 473 136 4 Jan 2025 599th MiffOttah 472 150 6 Oct 2024 600th Maximizer02 472 201 1 Oct 2024 Prev 526–600 of 701 Next