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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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 480th CaedenHarper 🇨🇦 673 177 292ms 17 Nov 2025 482nd HumanoidCPU 671 96 10ms 7 Mar 2025 483rd error256 671 101 5ms 24 Oct 2024 484th emgordon154 670 115 120ms 9 Dec 2025 485th Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 486th madex 🇩🇪 668 103 1ms 2 Oct 2024 487th CaedenHarper 🇨🇦 667 140 571ms 3 Oct 2025 488th dbut2 🇦🇺 666 179 297ms 31 Oct 2024 489th two-bad 🇬🇧 664 97 13ms 2 Oct 2024 489th LordSir101 664 97 11ms 10 Aug 2025 491st yeminghan2021 663 131 63ms 25 days ago 492nd Shanethegamer 🇺🇸 663 172 39ms 2 Oct 2024 493rd BlankSpruce 662 104 2ms 1 Oct 2024 494th snoozingnewt 🇨🇦 662 180 291ms 2 Nov 2025 495th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 496th MeWhenI 🇻🇦 660 88 137ms 2 Oct 2024 496th Shanethegamer 🇺🇸 660 88 180ms 5 Oct 2024 498th GolfingSuccess 🇬🇷 660 98 17ms 5 Oct 2024 498th JunkIce 660 98 10ms 3 Dec 2024 500th BambooleanLogic 🇸🇪 657 98 10ms 21 Oct 2024 501st error256 657 142 159ms 31 May 2025 502nd AlephSquirrel 657 146 4ms 14 May 2025 503rd Herbert00709 🇵🇱 656 105 2ms 14 Jun 2025 504th MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 505th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 506th MeWhenI 🇻🇦 654 88 440ms 2 Oct 2024 507th voytxt 🇨🇿 653 89 148ms 17 Apr 2025 507th dokutan 653 89 118ms 28 Jun 2025 509th SirBogman 🇺🇸 653 99 16ms 8 Oct 2024 510th dokutan 651 99 9ms 28 Jun 2025 511th w911 651 183 293ms 7 Oct 2024 512th albanian-laundromat 651 293 14ms 8 Dec 2025 513th emgordon154 650 111 4ms 12 Jan 2025 514th rniii 649 106 1ms 2 Oct 2024 514th gastropner 649 106 2ms 11 Feb 2025 514th solisolu 649 106 2ms 14 days ago 517th DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 518th rucin93 🇵🇱 648 144 143ms 28 Oct 2024 519th FlorianCassayre 🇫🇷 646 100 17ms 1 Oct 2024 519th bzijlema 🇳🇱 646 100 18ms 10 Oct 2024 519th bricknellj 646 100 17ms 4 Mar 2025 522nd koipondx86 645 123 2ms 8 Nov 2024 523rd frankgraziano 645 128 7ms 7 days ago 524th CaedenHarper 🇨🇦 644 100 9ms 22 Aug 2025 524th iczelia 🇩🇪 644 100 10ms 11 Oct 2025 524th Yax42 🇫🇷 644 100 10ms 27 Nov 2025 527th Apataras 644 145 390ms 25 Jun 2025 528th tomh1012 643 111 539ms 8 Sep 2025 529th Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 530th btjones0 640 101 17ms 2 Dec 2024 531st dokutan 640 146 379ms 23 Nov 2025 532nd stefangimmillaro 639 73 306ms 1 Oct 2024 533rd dokutan 639 90 395ms 14 days ago 534th elgan65536 🇺🇸 639 146 160ms 2 Oct 2024 534th luuumine 🇫🇷 639 146 148ms 26 Nov 2025 536th MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 537th MeWhenI 🇻🇦 634 91 994ms 29 Aug 2025 538th annaproxy 634 102 17ms 1 Oct 2024 538th xyangst 634 102 11ms 1 Oct 2024 538th solisolu 634 102 10ms 31 Dec 2025 541st msbranicky 634 188 279ms 7 Jan 2025 542nd Shanethegamer 🇺🇸 631 74 285ms 16 Oct 2024 543rd Florian-Mt 631 102 10ms 5 Dec 2025 544th albanian-laundromat 631 264 1,644ms 3 Nov 2025 545th robin-scragg 627 103 11ms 21 Aug 2025 546th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 547th Jonatan6 🇩🇰 626 110 2ms 24 Oct 2024 548th AlephSquirrel 625 40 43ms 1 Oct 2024 549th dokutan 624 127 2ms 10 Dec 2024 550th Yax42 🇫🇷 620 111 2ms 9 Jan 2026 551st codereport 🇨🇦 619 63 33ms 2 Oct 2024 552nd SirBogman 🇺🇸 619 93 503ms 23 Jul 2025 553rd BalaM314 619 104 11ms 4 Feb 2025 553rd acollett89 619 104 9ms 15 Jul 2025 555th MarcMush 🇫🇷 617 91 813ms 8 Oct 2024 556th Ripick 617 135 377ms 23 Mar 2025 557th fourth-bit 616 105 17ms 1 Oct 2024 557th jared-hughes 616 105 16ms 3 Oct 2024 557th mattyhempstead 616 105 26ms 7 Oct 2024 560th bac0id 616 141 457ms 10 Jan 2025 First Prev 481–560 of 899 Next Last