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 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 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 601st msbranicky 525 123 17ms 3 Oct 2024 601st bobbysq 525 123 11ms 5 Oct 2024 601st wuzekai518 525 123 11ms 8 Oct 2024 601st vhoulbreque 🇫🇷 525 123 14ms 4 Feb 2025 605th galloj 🇨🇿 522 112 27ms 4 Oct 2024 606th Macweese 522 178 342ms 3 Aug 2025 607th NotEvenIndian 521 124 11ms 22 Oct 2024 607th ridingqwerty 🇺🇸 521 124 17ms 16 Jan 2025 607th CommandLeo 🇮🇹 521 124 11ms 5 Oct 2025 610th snoozingnewt 🇺🇸 519 213 119ms 8 hours ago 611th bnic24 516 125 23ms 3 Oct 2024 611th adoxography 516 125 12ms 22 Oct 2024 611th lelbal 516 125 10ms 20 days ago 614th bac0id 516 180 567ms 9 Jan 2025 615th sidok 515 109 276ms 13 Nov 2024 616th dokutan 512 143 152ms 19 Oct 2024 617th emgordon154 511 156 10ms 13 Dec 2024 618th nephila-nacrea 🇬🇧 510 77 4ms 2 Oct 2024 619th KatieLG 🇬🇧 509 140 380ms 1 Oct 2024 620th KatieLG 🇬🇧 509 146 8ms 2 Oct 2024 621st CatsAreFluffy 508 127 18ms 30 Oct 2024 621st WillowWispy 508 127 11ms 25 May 2025 623rd Chinay-Domitrix 🇺🇸 507 131 4,630ms 30 Mar 2025 624th msbranicky 507 138 4ms 3 Oct 2024 625th yoshykai 507 183 347ms 12 Apr 2025 626th Lv0Sys 🇵🇱 504 128 19ms 15 Jun 2025 627th snoozingnewt 🇺🇸 501 142 420ms 8 hours ago 628th madex 🇩🇪 500 129 18ms 2 Oct 2024 628th RedzGoose 🇦🇺 500 129 11ms 15 Oct 2024 628th calebaitken 500 129 10ms 11 Apr 2025 631st MeWhenI 🇻🇦 499 149 45ms 4 Oct 2024 632nd janAkali 🇷🇺 499 167 335ms 8 Oct 2024 633rd Europe2048 497 130 11ms 2 Oct 2024 633rd nstearns96 🇬🇧 497 130 16ms 2 Oct 2024 633rd rollershutter 497 130 11ms 10 Jan 2025 633rd Stockoh 🇫🇷 497 130 18ms 4 Jul 2025 637th jlangvand 497 141 1ms 15 Oct 2024 637th HumanoidCPU 497 141 2ms 7 Mar 2025 639th inverseLorentz 🇦🇺 493 131 11ms 7 Oct 2024 639th sciencejiho 493 131 19ms 11 Feb 2025 639th Jaydosu 493 131 10ms 11 Apr 2025 642nd TheRealOhead 🇺🇸 491 131 10ms 1 Oct 2024 643rd HumanoidCPU 491 145 427ms 5 Oct 2024 644th snoozingnewt 🇺🇸 488 150 150ms 8 hours ago 645th snoozingnewt 🇺🇸 486 117 1,062ms 8 hours ago 646th Mabeloid 🇳🇴 485 133 11ms 2 Oct 2024 646th Emutis 🇱🇹 485 133 11ms 4 Feb 2025 648th h-hh-hhh 🇺🇦 485 177 69ms 2 Nov 2024 649th snoozingnewt 🇺🇸 484 168 136ms 8 hours ago 650th snoozingnewt 🇺🇸 483 249 28ms 8 hours ago 651st snoozingnewt 🇺🇸 482 173 353ms 8 hours ago 652nd alphafalfa 480 92 2ms 8 Nov 2024 653rd KatieLG 🇬🇧 478 120 585ms 1 Oct 2024 654th h-hh-hhh 🇺🇦 477 147 2ms 2 Nov 2024 655th mitzal 477 180 65ms 9 Feb 2025 656th ravnskjaer 🇩🇰 476 195 414ms 20 Dec 2024 656th snoozingnewt 🇺🇸 476 195 432ms 8 hours ago 658th sciencedjinn 475 136 10ms 8 Nov 2024 658th ihatethefrench 475 136 18ms 4 Jan 2025 660th MiffOttah 475 150 402ms 6 Oct 2024 661st kurkale6ka 471 137 22ms 16 Oct 2024 661st 4ndyJ 🇬🇧 471 137 11ms 14 Nov 2024 661st Mikey-Beep 🇬🇧 471 137 16ms 6 Aug 2025 661st wobblybits 471 137 21ms 17 Aug 2025 665th iczelia 🇩🇪 470 94 3ms 23 Sep 2025 666th luca1339 469 198 575ms 4 Nov 2024 667th ejini6969 468 102 35ms 14 Jun 2025 668th snoozingnewt 🇺🇸 465 200 219ms 8 hours ago 669th scpchicken 🇵🇼 464 139 20ms 6 Oct 2024 670th NanduBC 461 140 10ms 1 Oct 2024 670th jmerle 🇳🇱 461 140 11ms 10 Jan 2025 670th RobertHoeh 461 140 10ms 3 Mar 2025 670th smilesformiles3 461 140 23ms 12 Jun 2025 670th artem-aramma 461 140 17ms 18 Jun 2025 675th snoozingnewt 🇺🇸 460 96 3ms 8 hours ago First Prev 601–675 of 804 Next Last