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 525th logvp 546 118 6 Oct 2024 525th ahmetdemirag 🇨🇾 546 118 6 Feb 2025 528th mousetail 🇳🇱 546 128 3 Oct 2024 529th zakariamouhid 544 118 1 Oct 2024 530th xyangst 543 171 1 Oct 2024 531st jtaxen 541 119 21 Oct 2024 531st psbpsbp 541 119 19 Dec 2024 531st klixel 🇨🇦 541 119 9 Apr 2025 534th najs91 540 131 15 Oct 2024 534th bac0id 540 131 9 Jan 2025 536th eranws 539 119 23 Dec 2024 537th TaserTheFox 🇺🇸 537 120 8 Oct 2024 537th yokasuretsu 537 120 26 Jan 2025 537th Troon 537 120 17 Feb 2025 540th Sciman101 536 147 26 Mar 2025 541st msbranicky 531 175 13 Dec 2024 542nd deancureton 530 121 30 Dec 2024 543rd janAkali 🇷🇺 529 167 8 Oct 2024 544th chartung17 528 122 24 Mar 2025 545th msbranicky 527 126 9 Jan 2025 546th CaedenHarper 🇨🇦 524 109 9 Oct 2024 547th msbranicky 524 123 3 Oct 2024 547th bobbysq 524 123 5 Oct 2024 547th wuzekai518 524 123 8 Oct 2024 547th vhoulbreque 🇫🇷 524 123 4 Feb 2025 551st galloj 🇨🇿 522 112 4 Oct 2024 552nd NotEvenIndian 519 124 22 Oct 2024 552nd ridingqwerty 🇺🇸 519 124 16 Jan 2025 554th bnic24 515 125 3 Oct 2024 554th adoxography 515 125 22 Oct 2024 556th sidok 514 109 13 Nov 2024 557th nephila-nacrea 🇬🇧 509 77 2 Oct 2024 558th dokutan 509 143 19 Oct 2024 559th KatieLG 🇬🇧 509 146 2 Oct 2024 560th CatsAreFluffy 507 127 30 Oct 2024 560th WillowWispy 507 127 25 May 2025 562nd Chinay-Domitrix 🇺🇸 507 131 30 Mar 2025 563rd KatieLG 🇬🇧 506 140 1 Oct 2024 564th msbranicky 505 138 3 Oct 2024 565th lelbal 503 128 2 Oct 2024 565th Lv0Sys 🇵🇱 503 128 17 days ago 567th albanian-laundromat 499 88 8 hours ago 568th madex 🇩🇪 499 129 2 Oct 2024 568th RedzGoose 🇦🇺 499 129 15 Oct 2024 568th calebaitken 499 129 11 Apr 2025 571st MeWhenI 🇻🇦 499 149 4 Oct 2024 572nd jlangvand 496 141 15 Oct 2024 572nd HumanoidCPU 496 141 7 Mar 2025 574th Europe2048 495 130 2 Oct 2024 574th nstearns96 🇬🇧 495 130 2 Oct 2024 574th rollershutter 495 130 10 Jan 2025 577th Stockoh 🇫🇷 492 131 2 Oct 2024 577th inverseLorentz 🇦🇺 492 131 7 Oct 2024 577th sciencejiho 492 131 11 Feb 2025 577th Jaydosu 492 131 11 Apr 2025 581st TheRealOhead 🇺🇸 490 131 1 Oct 2024 582nd HumanoidCPU 488 145 5 Oct 2024 583rd Mabeloid 🇳🇴 484 133 2 Oct 2024 583rd Emutis 🇱🇹 484 133 4 Feb 2025 585th h-hh-hhh 🇺🇦 484 177 2 Nov 2024 586th Mabeloid 🇳🇴 482 145 2 Oct 2024 587th alphafalfa 477 92 8 Nov 2024 588th KatieLG 🇬🇧 476 108 13 Oct 2024 589th KatieLG 🇬🇧 476 120 1 Oct 2024 590th h-hh-hhh 🇺🇦 476 147 2 Nov 2024 591st mitzal 476 180 9 Feb 2025 592nd sciencedjinn 473 136 8 Nov 2024 592nd ihatethefrench 473 136 4 Jan 2025 594th MiffOttah 472 150 6 Oct 2024 595th Maximizer02 472 201 1 Oct 2024 596th kurkale6ka 470 137 16 Oct 2024 596th 4ndyJ 🇬🇧 470 137 14 Nov 2024 598th ejini6969 467 102 18 days ago 599th BREMAUCY 🇫🇷 467 138 2 Oct 2024 600th scpchicken 🇵🇼 463 139 6 Oct 2024 Prev 526–600 of 697 Next