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 Hilbert Curve 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 Topological Sort 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth 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 Groovy 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 Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka 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 Groovy 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 Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka 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 Hilbert Curve 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 Topological Sort 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 451st SirBogman 🇺🇸 652 99 8 Oct 2024 452nd MeWhenI 🇻🇦 651 88 2 Oct 2024 453rd voytxt 🇨🇿 651 89 17 Apr 2025 453rd dokutan 651 89 28 Jun 2025 455th dokutan 649 99 28 Jun 2025 456th bac0id 648 180 9 Jan 2025 457th jwhear 🇺🇸 647 197 1 Oct 2024 458th w911 646 183 7 Oct 2024 459th MeWhenI 🇻🇦 645 91 25 days ago 460th FlorianCassayre 🇫🇷 645 100 1 Oct 2024 460th bzijlema 🇳🇱 645 100 10 Oct 2024 460th bricknellj 645 100 4 Mar 2025 463rd rucin93 🇵🇱 645 144 28 Oct 2024 464th CaedenHarper 🇨🇦 643 100 22 Aug 2025 465th Shanethegamer 🇺🇸 643 124 4 Oct 2024 466th koipondx86 641 123 8 Nov 2024 467th stefangimmillaro 639 73 1 Oct 2024 468th btjones0 639 101 2 Dec 2024 469th tomh1012 639 111 16 days ago 470th CaedenHarper 🇨🇦 639 185 3 Jan 2025 471st snoozingnewt 🇺🇸 637 90 3 days ago 472nd Yax42 🇫🇷 637 101 19 days ago 473rd yoshykai 637 183 12 Apr 2025 474th Jonatan6 🇩🇰 636 110 24 Oct 2024 475th elgan65536 636 146 2 Oct 2024 476th annaproxy 632 102 1 Oct 2024 476th xyangst 632 102 1 Oct 2024 478th Shanethegamer 🇺🇸 631 74 16 Oct 2024 479th dokutan 630 91 19 Oct 2024 480th msbranicky 628 188 7 Jan 2025 481st mossiegoat 626 103 21 Aug 2025 482nd AlephSquirrel 625 40 1 Oct 2024 483rd dokutan 621 127 10 Dec 2024 484th not-a-pokemon 619 113 23 Jul 2025 485th DialFrost 🇸🇬 619 304 13 Aug 2025 486th BalaM314 618 104 4 Feb 2025 486th acollett89 618 104 15 Jul 2025 488th codereport 🇨🇦 617 63 2 Oct 2024 489th Schmitt-Very-Cool 617 189 3 Feb 2025 490th SirBogman 🇺🇸 616 93 23 Jul 2025 491st MarcMush 🇫🇷 615 91 8 Oct 2024 492nd Ripick 615 135 23 Mar 2025 493rd fourth-bit 614 105 1 Oct 2024 493rd jared-hughes 614 105 3 Oct 2024 493rd mattyhempstead 614 105 7 Oct 2024 496th jupj 🇫🇮 614 114 20 Jul 2025 497th olleicua 🇺🇸 612 78 18 Oct 2024 498th davecame 609 106 1 Oct 2024 498th starfihs 609 106 2 Oct 2024 498th rschwa6308 🇺🇸 609 106 28 Oct 2024 498th snydej 609 106 21 Nov 2024 498th andrewjc2000 609 106 17 Jul 2025 498th qpwoeirut 609 106 19 Aug 2025 498th travisdoesmath 609 106 16 days ago 505th bac0id 608 141 10 Jan 2025 506th daveberlin 607 106 27 Jun 2025 507th Seanharrs 606 117 15 Nov 2024 508th kaascevich 604 134 9 Jul 2025 509th MeWhenI 🇻🇦 603 73 2 Oct 2024 510th commandblockguy 🇺🇸 603 107 7 Oct 2024 510th zbreit 🇺🇸 603 107 29 Oct 2024 510th StardustGogeta 603 107 30 Oct 2024 510th ZakkkkAttackkkk 🇵🇭 603 107 8 Feb 2025 510th InigoK 🇺🇸 603 107 2 days ago 515th Shanethegamer 🇺🇸 603 154 3 Oct 2024 516th alemelis 602 93 1 Oct 2024 517th dokutan 598 117 3 Oct 2024 517th roguh 🇬🇹 598 117 13 Oct 2024 519th ravnskjaer 🇩🇰 598 195 20 Dec 2024 520th MeWhenI 🇻🇦 597 98 1 Oct 2024 521st neihousaigaai 597 108 4 Oct 2024 521st StefanHabel 🇨🇦 597 108 23 Jan 2025 521st CaedenHarper 🇨🇦 597 108 22 Jul 2025 524th SirBogman 🇺🇸 591 64 11 Jul 2025 525th arcpolaris 591 120 28 Jan 2025 Prev 451–525 of 756 Next