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 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 Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers 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 Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Star Wars GPT 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 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 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 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 Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers 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 Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Star Wars GPT Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 526th bnic24 514 125 3 Oct 2024 526th adoxography 514 125 22 Oct 2024 526th andrewjc2000 514 125 3 Mar 2025 529th nephila-nacrea 🇬🇧 509 77 2 Oct 2024 530th KatieLG 🇬🇧 509 146 2 Oct 2024 531st Chinay-Domitrix 🇺🇸 507 131 4 days ago 532nd CatsAreFluffy 506 127 30 Oct 2024 533rd KatieLG 🇬🇧 506 140 1 Oct 2024 534th msbranicky 505 138 3 Oct 2024 535th lelbal 502 128 2 Oct 2024 535th WillowWispy 502 128 20 days ago 537th MeWhenI 🇻🇦 499 149 4 Oct 2024 538th madex 🇩🇪 498 129 2 Oct 2024 538th RedzGoose 🇦🇺 498 129 15 Oct 2024 540th jlangvand 495 141 15 Oct 2024 540th HumanoidCPU 495 141 27 days ago 542nd Europe2048 494 130 2 Oct 2024 542nd nstearns96 🇬🇧 494 130 2 Oct 2024 542nd rollershutter 494 130 10 Jan 2025 545th Stockoh 🇫🇷 490 131 2 Oct 2024 545th inverseLorentz 🇦🇺 490 131 7 Oct 2024 545th sciencejiho 490 131 11 Feb 2025 548th TheRealOhead 🇺🇸 488 131 1 Oct 2024 549th HumanoidCPU 488 145 5 Oct 2024 550th Mabeloid 🇳🇴 483 133 2 Oct 2024 550th Emutis 🇱🇹 483 133 4 Feb 2025 552nd h-hh-hhh 🇺🇦 483 177 2 Nov 2024 553rd Mabeloid 🇳🇴 482 145 2 Oct 2024 554th alphafalfa 476 92 8 Nov 2024 555th KatieLG 🇬🇧 476 108 13 Oct 2024 556th KatieLG 🇬🇧 475 120 1 Oct 2024 557th h-hh-hhh 🇺🇦 475 147 2 Nov 2024 558th mitzal 475 180 9 Feb 2025 559th sciencedjinn 472 136 8 Nov 2024 559th ihatethefrench 472 136 4 Jan 2025 561st MiffOttah 472 150 6 Oct 2024 562nd Maximizer02 472 201 1 Oct 2024 563rd kurkale6ka 469 137 16 Oct 2024 563rd 4ndyJ 🇬🇧 469 137 14 Nov 2024 565th BREMAUCY 🇫🇷 466 138 2 Oct 2024 566th varhammer 🇷🇺 463 223 23 Feb 2025 567th scpchicken 🇵🇼 462 139 6 Oct 2024 568th Yewzir 460 171 26 Dec 2024 569th NanduBC 459 140 1 Oct 2024 569th Mikey-Beep 🇬🇧 459 140 7 Oct 2024 569th jmerle 🇳🇱 459 140 10 Jan 2025 569th RobertHoeh 459 140 3 Mar 2025 573rd madex 🇩🇪 457 104 2 Oct 2024 574th FranklinJiaChen 456 141 2 Oct 2024 575th brimstonetrader 452 142 17 Oct 2024 576th dokutan 450 63 26 Nov 2024 577th GeneralFabian 449 143 9 Dec 2024 577th CutSandstone 449 143 30 Jan 2025 579th IISResetMe 447 104 8 days ago 580th hiichbindermax 446 144 2 Oct 2024 580th mathisfun271 446 144 14 Oct 2024 580th bob-th 446 144 22 Oct 2024 583rd dokutan 445 109 19 Oct 2024 584th grey0ut 443 105 11 Jan 2025 585th croc54 440 146 15 Dec 2024 586th PyryL 🇫🇮 437 147 1 Mar 2025 587th mbittner20 434 148 13 Oct 2024 588th dokutan 431 130 17 Oct 2024 589th Mabeloid 🇳🇴 429 133 2 Oct 2024 590th jameswmccarty 428 150 5 Oct 2024 590th yousefalizadeh 428 150 23 Oct 2024 590th feherd 428 150 31 Oct 2024 593rd adamnielson42 🇺🇸 423 152 6 Oct 2024 593rd voidgloom 423 152 22 Oct 2024 595th dieggsy 418 247 10 Oct 2024 596th MeWhenI 🇻🇦 417 143 2 Oct 2024 597th snoozingnewt 🇺🇸 416 137 27 Jan 2025 598th cdesodt 415 155 16 Oct 2024 599th lhulinsky 409 157 21 Oct 2024 600th ThatAlo 407 158 9 Dec 2024 Prev 526–600 of 631 Next