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Card Number Validation in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Minesweeper Morse Decoder Morse Encoder Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Minesweeper Morse Decoder Morse Encoder Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 400th emgordon154 735 34 64ms 11 Sep 2025 400th plcc0 735 34 70ms 31 Jan 2026 403rd wh3n3v3r 🇨🇿 735 88 11ms 18 Nov 2024 403rd blaztoma 🇱🇹 735 88 23ms 20 days ago 405th Shanethegamer 🇺🇸 735 100 161ms 24 May 2025 406th Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 406th chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 408th stefangimmillaro 734 94 1ms 30 Oct 2024 408th emgordon154 734 94 2ms 7 Feb 2026 410th stefangimmillaro 734 114 424ms 13 Oct 2024 411th DialFrost 🇸🇬 734 131 7ms 11 Dec 2024 412th edsrzf 🇳🇿 732 52 135ms 16 Jan 2026 413th error256 731 109 10ms 24 Jul 2025 413th zacjl 731 109 9ms 27 Mar 2026 415th error256 730 98 511ms 17 Jan 2026 416th Shanethegamer 🇺🇸 729 112 106ms 3 Oct 2024 417th Shanethegamer 🇺🇸 729 132 7ms 2 Oct 2024 418th retrohun 725 60 2ms 11 days ago 419th dtbao20 🇻🇳 725 89 13ms 1 Oct 2024 419th madeforlosers 725 89 12ms 17 Oct 2024 419th junkondo-jp 725 89 11ms 14 Dec 2024 419th alexsave 725 89 10ms 20 Jan 2026 423rd Shanethegamer 🇺🇸 725 96 2ms 3 Oct 2024 424th annaproxy 723 132 15ms 1 Oct 2024 425th MeWhenI 🇻🇦 721 78 332ms 2 Oct 2024 426th MeWhenI 🇻🇦 721 102 155ms 27 Mar 2026 427th weeble 720 74 6ms 1 Jul 2025 428th nwellnhof 🇩🇪 719 90 20ms 1 Oct 2024 428th ovs-code 🇩🇪 719 90 18ms 3 Oct 2024 428th luuumine 🇫🇷 719 90 18ms 8 Oct 2025 428th firegene 🇮🇪 719 90 16ms 19 Feb 2026 428th lukegustafson 🇺🇸 719 90 18ms 25 Feb 2026 433rd snyderek 🇺🇸 718 121 61ms 1 Oct 2024 434th ovs-code 🇩🇪 717 81 124ms 17 Apr 2025 435th JOrE20 716 90 11ms 11 Feb 2026 436th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 437th rzv-me 713 95 6ms 5 Oct 2024 438th DialFrost 🇸🇬 713 106 12ms 13 Dec 2024 439th h3ra993huskp 🇯🇵 713 131 552ms 30 Nov 2025 440th CLOStrophobic 🇮🇹 712 160 40ms 27 Feb 2025 441st 5cw 🇺🇸 711 91 17ms 1 Oct 2024 441st stefangimmillaro 711 91 22ms 13 Oct 2024 441st GrayJoKing 🇦🇺 711 91 20ms 2 Jul 2025 444th MeWhenI 🇻🇦 710 115 453ms 5 Oct 2024 445th DialFrost 🇸🇬 710 132 250ms 8 Apr 2025 446th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 447th Shanethegamer 🇺🇸 709 118 385ms 2 Oct 2024 448th GrayJoKing 🇦🇺 708 82 121ms 1 Oct 2024 449th Shanethegamer 🇺🇸 707 127 1,453ms 9 days ago 450th BlankSpruce 706 123 440ms 1 Oct 2024 451st cbrt-x 706 157 139ms 1 Oct 2024 452nd edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 453rd mousetail 🇳🇱 705 133 154ms 3 Oct 2024 454th janlelis 704 68 43ms 1 Oct 2024 454th tatzyr 🇯🇵 704 68 40ms 23 Dec 2024 456th Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 457th Shanethegamer 🇺🇸 703 92 18ms 3 Oct 2024 457th error256 703 92 23ms 7 Oct 2024 457th thatbirdguythatuknownot 703 92 20ms 14 Oct 2024 460th emgordon154 702 76 5ms 7 Jun 2025 461st LukeBridges 🇬🇧 701 92 9ms 3 Oct 2024 461st ComradeSquirrel 701 92 10ms 12 days ago 463rd Alex-x90 🇺🇸 701 124 415ms 1 Oct 2024 463rd Herbert00709 🇵🇱 701 124 61ms 14 Jun 2025 465th albanian-laundromat 🇺🇸 700 108 57ms 6 Mar 2026 466th Shanethegamer 🇺🇸 699 101 5ms 2 Oct 2024 467th emgordon154 699 134 235ms 25 Feb 2025 468th tobeannouncd 697 159 146ms 13 Dec 2024 469th Bulmenisaurus 695 93 17ms 6 Oct 2024 469th lynn 695 93 17ms 8 Jan 2025 469th RaBa21 🇭🇺 695 93 19ms 19 Jul 2025 469th KasperKivimaeki 🇫🇮 695 93 19ms 30 Nov 2025 473rd CaedenHarper 🇨🇦 694 36 46ms 17 days ago 474th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 475th pardouin 🇫🇷 693 57 4ms 3 Oct 2024 476th Shanethegamer 🇺🇸 693 83 479ms 5 Oct 2024 477th xyangst 693 93 13ms 1 Oct 2024 477th Salutations45 693 93 10ms 17 Nov 2024 477th strattonwhisler 693 93 11ms 26 Mar 2025 480th Alex-x90 🇺🇸 690 100 2ms 1 Oct 2024 480th madex 🇩🇪 690 100 2ms 17 days ago 482nd NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 483rd MeWhenI 🇻🇦 688 68 284ms 2 Oct 2024 484th DialFrost 🇸🇬 688 94 17ms 1 Oct 2024 485th dokutan 687 116 6ms 19 Oct 2024 486th XenThe 🇬🇧 686 94 10ms 7 Jul 2025 487th ovs-code 🇩🇪 685 84 524ms 3 Oct 2024 488th KatieLG 🇬🇧 684 70 37ms 2 Oct 2025 489th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 490th the-zammers 680 163 149ms 1 Dec 2024 491st tailorspy 679 128 454ms 4 Oct 2024 492nd GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 493rd snoozingnewt 🇨🇦 676 95 86ms 23 Oct 2025 494th MeWhenI 🇻🇦 674 96 17ms 30 Jul 2025 495th jkelly467 674 99 2,673ms 22 Jan 2026 496th Yax42 🇫🇷 674 129 81ms 8 Jan 2026 496th emgordon154 674 129 67ms 8 Feb 2026 498th jerrandolph 673 177 368ms 25 Sep 2025 498th CaedenHarper 🇨🇦 673 177 326ms 17 Nov 2025 500th HumanoidCPU 672 96 11ms 7 Mar 2025 First Prev 401–500 of 941 Next Last