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 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 Dragon Curve 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 721st KatieLG 🇬🇧 512 146 9ms 2 Oct 2024 722nd isaiah0311 🇺🇸 511 135 2ms 9 Feb 2026 723rd KatieLG 🇬🇧 511 140 431ms 1 Oct 2024 724th yoshykai 511 183 374ms 12 Apr 2025 725th Chinay-Domitrix 🇺🇸 510 131 2,683ms 30 Mar 2025 726th CatsAreFluffy 509 127 17ms 30 Oct 2024 726th WillowWispy 509 127 11ms 25 May 2025 728th msbranicky 506 138 3ms 3 Oct 2024 729th snoozingnewt 🇨🇦 504 142 471ms 2 Nov 2025 730th blaztoma 🇱🇹 504 154 119ms 28 Nov 2025 731st MeWhenI 🇻🇦 502 149 54ms 4 Oct 2024 732nd madex 🇩🇪 501 129 21ms 2 Oct 2024 732nd RedzGoose 🇦🇺 501 129 11ms 15 Oct 2024 732nd calebaitken 501 129 10ms 11 Apr 2025 732nd rollershutter 501 129 19ms 20 Nov 2025 736th Europe2048 497 130 11ms 2 Oct 2024 736th nstearns96 🇬🇧 497 130 17ms 2 Oct 2024 736th Stockoh 🇫🇷 497 130 17ms 4 Jul 2025 739th inverseLorentz 🇦🇺 494 131 12ms 7 Oct 2024 739th sciencejiho 494 131 24ms 11 Feb 2025 739th Jaydosu 494 131 11ms 11 Apr 2025 739th Emutis 🇱🇹 494 131 10ms 11 Nov 2025 743rd HumanoidCPU 493 145 544ms 5 Oct 2024 744th snoozingnewt 🇨🇦 493 150 198ms 2 Nov 2025 745th CarterStroik 493 161 2ms 19 Nov 2025 746th snoozingnewt 🇨🇦 493 249 26ms 2 Nov 2025 747th owen-c-parker 🇺🇸 492 131 14ms 1 Oct 2024 748th h-hh-hhh 🇺🇦 492 177 63ms 2 Nov 2024 749th sultan 490 132 17ms 8 days ago 750th jlangvand 489 141 1ms 15 Oct 2024 750th HumanoidCPU 489 141 1ms 7 Mar 2025 752nd snoozingnewt 🇨🇦 487 117 1,631ms 2 Nov 2025 753rd Mabeloid 🇳🇴 486 133 10ms 2 Oct 2024 754th snoozingnewt 🇨🇦 485 173 377ms 2 Nov 2025 755th mitzal 483 180 63ms 9 Feb 2025 756th Mikey-Beep 🇬🇧 479 135 17ms 11 days ago 757th MiffOttah 477 150 506ms 6 Oct 2024 757th mwarvik 🇳🇴 477 150 446ms 1 Jan 2026 759th sciencedjinn 475 136 10ms 8 Nov 2024 759th mchalunderscore 475 136 20ms 4 Jan 2025 759th Florian-Mt 475 136 17ms 5 Dec 2025 762nd alphafalfa 474 92 2ms 8 Nov 2024 763rd kurkale6ka 472 137 29ms 16 Oct 2024 763rd 4ndyJ 🇬🇧 472 137 12ms 14 Nov 2024 763rd wobblybits 472 137 18ms 17 Aug 2025 763rd Andrey2001 472 137 16ms 1 Feb 2026 763rd tomh1012 472 137 18ms 4 Mar 2026 763rd Aquateraneal 🇺🇸 472 137 18ms 8 Mar 2026 769th luca1339 472 198 425ms 4 Nov 2024 770th ejini6969 470 102 38ms 14 Jun 2025 771st h-hh-hhh 🇺🇦 469 147 1ms 2 Nov 2024 772nd snoozingnewt 🇨🇦 469 200 260ms 2 Nov 2025 773rd snoozingnewt 🇨🇦 466 121 214ms 27 Nov 2025 774th iczelia 🇩🇪 464 94 2ms 23 Sep 2025 775th Jacob385 463 202 411ms 2 Oct 2024 776th NanduBC 462 140 11ms 1 Oct 2024 776th jmerle 🇳🇱 462 140 10ms 10 Jan 2025 776th RobertHoeh 462 140 10ms 3 Mar 2025 776th smilesformiles3 462 140 18ms 12 Jun 2025 776th artem-aramma 462 140 16ms 18 Jun 2025 781st madex 🇩🇪 461 104 40ms 2 Oct 2024 782nd FranklinJiaChen 459 141 13ms 2 Oct 2024 783rd TheZwierzLF 🇵🇱 457 105 37ms 8 Jan 2026 784th jbjd 457 151 2ms 4 Feb 2026 785th brimstonetrader 455 142 16ms 17 Oct 2024 785th codewrite 🇬🇧 455 142 12ms 5 May 2025 785th RobGLambert 455 142 19ms 8 Jun 2025 785th GodlyProgrammer1 455 142 18ms 22 Nov 2025 785th jbjd 455 142 11ms 4 Feb 2026 790th snoozingnewt 🇨🇦 455 149 5ms 2 Nov 2025 791st Arkadios200 455 180 130ms 10 days ago 792nd snoozingnewt 🇨🇦 454 96 2ms 2 Nov 2025 793rd IISResetMe 454 103 488ms 27 Nov 2025 794th TheZwierzLF 🇵🇱 453 127 505ms 12 Dec 2025 795th GeneralFabian 452 143 10ms 9 Dec 2024 795th CutSandstone 452 143 11ms 30 Jan 2025 795th kistlerf 🇨🇭 452 143 17ms 19 May 2025 798th dokutan 451 63 3ms 26 Nov 2024 799th snoozingnewt 🇨🇦 451 176 2ms 2 Nov 2025 800th hiichbindermax 449 144 19ms 2 Oct 2024 First Prev 721–800 of 1,004 Next Last