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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 481st the-zammers 680 163 149ms 1 Dec 2024 482nd tailorspy 679 128 477ms 4 Oct 2024 483rd GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 484th snoozingnewt 🇨🇦 676 95 78ms 23 Oct 2025 485th jkelly467 674 99 2,688ms 22 Jan 2026 486th Yax42 🇫🇷 674 129 76ms 8 Jan 2026 486th emgordon154 674 129 65ms 8 Feb 2026 488th GolfingSuccess 🇬🇷 674 174 34ms 9 days ago 489th MeWhenI 🇻🇦 673 96 17ms 30 Jul 2025 490th jerrandolph 673 177 295ms 25 Sep 2025 490th CaedenHarper 🇨🇦 673 177 312ms 17 Nov 2025 492nd HumanoidCPU 672 96 11ms 7 Mar 2025 493rd error256 671 101 5ms 24 Oct 2024 494th emgordon154 670 115 111ms 9 Dec 2025 495th madex 🇩🇪 669 103 1ms 2 Oct 2024 495th solisolu 669 103 2ms 25 hours ago 497th Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 498th CaedenHarper 🇨🇦 668 140 571ms 3 Oct 2025 499th dbut2 🇦🇺 666 179 284ms 31 Oct 2024 500th two-bad 🇬🇧 665 97 10ms 2 Oct 2024 500th LordSir101 665 97 10ms 10 Aug 2025 502nd BlankSpruce 663 104 2ms 1 Oct 2024 503rd yeminghan2021 663 131 65ms 3 Feb 2026 504th Shanethegamer 🇺🇸 663 172 39ms 2 Oct 2024 505th snoozingnewt 🇨🇦 662 180 295ms 2 Nov 2025 506th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 507th MeWhenI 🇻🇦 660 88 136ms 2 Oct 2024 507th Shanethegamer 🇺🇸 660 88 146ms 5 Oct 2024 509th GolfingSuccess 🇬🇷 660 98 17ms 5 Oct 2024 509th JunkIce 660 98 10ms 3 Dec 2024 511th error256 660 142 156ms 31 May 2025 512th BambooleanLogic 🇸🇪 658 98 10ms 21 Oct 2024 513th AlephSquirrel 657 146 4ms 14 May 2025 514th Herbert00709 🇵🇱 656 105 2ms 14 Jun 2025 515th MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 516th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 517th albanian-laundromat 655 291 12ms 7 hours ago 518th MeWhenI 🇻🇦 654 88 440ms 2 Oct 2024 519th voytxt 🇨🇿 653 89 153ms 17 Apr 2025 519th dokutan 653 89 138ms 28 Jun 2025 521st SirBogman 🇺🇸 653 99 16ms 8 Oct 2024 521st solisolu 653 99 17ms 22 days ago 523rd dokutan 651 99 9ms 28 Jun 2025 524th rucin93 🇵🇱 651 144 164ms 28 Oct 2024 525th w911 651 183 281ms 7 Oct 2024 526th rniii 650 106 1ms 2 Oct 2024 526th gastropner 650 106 2ms 11 Feb 2025 528th DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 529th FlorianCassayre 🇫🇷 647 100 17ms 1 Oct 2024 529th bzijlema 🇳🇱 647 100 18ms 10 Oct 2024 529th bricknellj 647 100 17ms 4 Mar 2025 532nd CaedenHarper 🇨🇦 645 100 10ms 22 Aug 2025 532nd iczelia 🇩🇪 645 100 9ms 11 Oct 2025 532nd Yax42 🇫🇷 645 100 10ms 27 Nov 2025 535th koipondx86 645 123 2ms 8 Nov 2024 536th frankgraziano 645 128 7ms 21 Feb 2026 537th Apataras 645 145 390ms 25 Jun 2025 538th tomh1012 643 111 500ms 8 Sep 2025 539th Shanethegamer 🇺🇸 643 124 7ms 4 Oct 2024 540th elgan65536 🇺🇸 642 146 159ms 2 Oct 2024 540th luuumine 🇫🇷 642 146 151ms 26 Nov 2025 542nd btjones0 640 101 17ms 2 Dec 2024 543rd dokutan 640 146 379ms 23 Nov 2025 544th stefangimmillaro 639 73 314ms 1 Oct 2024 545th MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 546th Yax42 🇫🇷 638 108 2ms 10 days ago 547th emgordon154 636 111 4ms 12 Jan 2025 548th MeWhenI 🇻🇦 634 91 1,014ms 29 Aug 2025 549th annaproxy 634 102 17ms 1 Oct 2024 549th xyangst 634 102 11ms 1 Oct 2024 549th aksyristos 634 102 18ms 2 days ago 552nd msbranicky 634 188 301ms 7 Jan 2025 553rd Florian-Mt 632 102 10ms 5 Dec 2025 554th Shanethegamer 🇺🇸 631 74 324ms 16 Oct 2024 555th albanian-laundromat 631 264 1,461ms 3 Nov 2025 556th robin-scragg 628 103 11ms 21 Aug 2025 557th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 558th Jonatan6 🇩🇰 626 110 2ms 24 Oct 2024 559th AlephSquirrel 625 40 44ms 1 Oct 2024 560th dokutan 624 127 2ms 10 Dec 2024 First Prev 481–560 of 925 Next Last