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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time 601st emgordon154 511 156 13 Dec 2024 602nd nephila-nacrea 🇬🇧 510 77 2 Oct 2024 603rd dokutan 509 143 19 Oct 2024 604th KatieLG 🇬🇧 509 146 2 Oct 2024 605th CatsAreFluffy 508 127 30 Oct 2024 605th WillowWispy 508 127 25 May 2025 605th solisolu 508 127 6 days ago 608th Chinay-Domitrix 🇺🇸 507 131 30 Mar 2025 609th msbranicky 507 138 3 Oct 2024 610th yoshykai 507 183 12 Apr 2025 611th KatieLG 🇬🇧 506 140 1 Oct 2024 612th lelbal 504 128 2 Oct 2024 612th Lv0Sys 🇵🇱 504 128 15 Jun 2025 614th albanian-laundromat 501 88 2 Jul 2025 615th madex 🇩🇪 500 129 2 Oct 2024 615th RedzGoose 🇦🇺 500 129 15 Oct 2024 615th calebaitken 500 129 11 Apr 2025 618th MeWhenI 🇻🇦 499 149 4 Oct 2024 619th jlangvand 497 141 15 Oct 2024 619th HumanoidCPU 497 141 7 Mar 2025 621st janAkali 🇷🇺 497 167 8 Oct 2024 622nd Europe2048 496 130 2 Oct 2024 622nd nstearns96 🇬🇧 496 130 2 Oct 2024 622nd rollershutter 496 130 10 Jan 2025 622nd Stockoh 🇫🇷 496 130 4 Jul 2025 626th inverseLorentz 🇦🇺 493 131 7 Oct 2024 626th sciencejiho 493 131 11 Feb 2025 626th Jaydosu 493 131 11 Apr 2025 629th TheRealOhead 🇺🇸 491 131 1 Oct 2024 630th HumanoidCPU 489 145 5 Oct 2024 631st Mabeloid 🇳🇴 485 133 2 Oct 2024 631st Emutis 🇱🇹 485 133 4 Feb 2025 633rd h-hh-hhh 🇺🇦 485 177 2 Nov 2024 634th Mabeloid 🇳🇴 484 145 2 Oct 2024 635th alphafalfa 479 92 8 Nov 2024 636th KatieLG 🇬🇧 478 120 1 Oct 2024 637th h-hh-hhh 🇺🇦 477 147 2 Nov 2024 638th mitzal 477 180 9 Feb 2025 639th sciencedjinn 475 136 8 Nov 2024 639th ihatethefrench 475 136 4 Jan 2025 641st ravnskjaer 🇩🇰 475 195 20 Dec 2024 642nd MiffOttah 473 150 6 Oct 2024 643rd kurkale6ka 471 137 16 Oct 2024 643rd 4ndyJ 🇬🇧 471 137 14 Nov 2024 643rd Mikey-Beep 🇬🇧 471 137 6 Aug 2025 643rd wobblybits 471 137 17 Aug 2025 647th iczelia 🇩🇪 469 94 17 days ago 648th ejini6969 468 102 14 Jun 2025 649th luca1339 468 198 4 Nov 2024 650th scpchicken 🇵🇼 464 139 6 Oct 2024 651st NanduBC 461 140 1 Oct 2024 651st jmerle 🇳🇱 461 140 10 Jan 2025 651st RobertHoeh 461 140 3 Mar 2025 651st smilesformiles3 461 140 12 Jun 2025 651st artem-aramma 461 140 18 Jun 2025 656th Yewzir 🇧🇪 460 171 26 Dec 2024 657th madex 🇩🇪 459 104 2 Oct 2024 658th Jacob385 459 202 2 Oct 2024 659th FranklinJiaChen 458 141 2 Oct 2024 660th brimstonetrader 454 142 17 Oct 2024 660th codewrite 🇬🇧 454 142 5 May 2025 660th RobGLambert 454 142 8 Jun 2025 663rd dokutan 451 63 26 Nov 2024 664th GeneralFabian 451 143 9 Dec 2024 664th CutSandstone 451 143 30 Jan 2025 664th kistlerf 🇨🇭 451 143 19 May 2025 667th IISResetMe 449 104 27 Mar 2025 668th hiichbindermax 448 144 2 Oct 2024 668th mathisfun271 448 144 14 Oct 2024 668th bob-th 448 144 22 Oct 2024 671st varhammer 🇷🇺 448 223 23 Feb 2025 672nd dokutan 445 109 19 Oct 2024 673rd Flekay 🇩🇪 445 145 10 Jul 2025 674th grey0ut 444 105 11 Jan 2025 675th croc54 442 146 15 Dec 2024 First Prev 601–675 of 770 Next Last