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 376th Natanaelel 🇸🇪 707 55 1 Mar 2025 377th GrayJoKing 🇦🇺 707 82 1 Oct 2024 378th MeWhenI 🇻🇦 704 115 5 Oct 2024 379th DialFrost 🇸🇬 704 132 8 Apr 2025 380th Shanethegamer 🇺🇸 703 118 2 Oct 2024 381st janlelis 702 68 1 Oct 2024 381st tatzyr 🇯🇵 702 68 23 Dec 2024 383rd emgordon154 702 76 7 Jun 2025 384th Shanethegamer 🇺🇸 701 92 3 Oct 2024 384th error256 701 92 7 Oct 2024 384th thatbirdguythatuknownot 701 92 14 Oct 2024 387th Alex-x90 🇺🇸 701 100 1 Oct 2024 388th cbrt-x 701 157 1 Oct 2024 389th sean-niemann 🇺🇸 699 82 23 Dec 2024 390th LukeBridges 🇬🇧 699 92 3 Oct 2024 391st mousetail 🇳🇱 699 133 3 Oct 2024 392nd BlankSpruce 698 123 1 Oct 2024 393rd Bulmenisaurus 694 93 6 Oct 2024 393rd lynn 694 93 8 Jan 2025 393rd RaBa21 🇭🇺 694 93 19 Jul 2025 396th emgordon154 694 101 25 Nov 2024 397th Shanethegamer 🇺🇸 693 41 4 Oct 2024 398th emgordon154 693 134 25 Feb 2025 399th xyangst 692 93 1 Oct 2024 399th Salutations45 692 93 17 Nov 2024 399th strattonwhisler 692 93 26 Mar 2025 402nd Alex-x90 🇺🇸 692 124 1 Oct 2024 402nd Herbert00709 🇵🇱 692 124 14 Jun 2025 404th albanian-laundromat 692 147 30 Jun 2025 405th tobeannouncd 692 159 13 Dec 2024 406th Shanethegamer 🇺🇸 691 83 5 Oct 2024 407th pardouin 🇫🇷 688 57 3 Oct 2024 408th DialFrost 🇸🇬 687 94 1 Oct 2024 409th NickTheEASDude 🇺🇸 687 115 17 Dec 2024 410th dokutan 687 116 19 Oct 2024 411th MeWhenI 🇻🇦 686 68 2 Oct 2024 412th Lv0Sys 🇵🇱 684 94 15 Jun 2025 412th XenThe 🇬🇧 684 94 7 Jul 2025 414th albanian-laundromat 683 86 9 days ago 415th KatieLG 🇬🇧 682 70 5 days ago 416th ovs-code 🇩🇪 682 84 3 Oct 2024 417th error256 682 104 14 Oct 2024 418th madex 🇩🇪 681 103 2 Oct 2024 419th aDwarfNamedUrist 679 162 1 Sep 2025 420th Shanethegamer 🇺🇸 678 65 1 Oct 2024 421st plcc0 676 37 6 Apr 2025 422nd the-zammers 675 163 1 Dec 2024 423rd BlankSpruce 674 104 1 Oct 2024 424th MeWhenI 🇻🇦 673 108 2 Oct 2024 425th KasperKivimaeki 🇫🇮 672 96 1 Jul 2025 425th MeWhenI 🇻🇦 672 96 30 Jul 2025 427th Shanethegamer 🇺🇸 672 172 2 Oct 2024 428th edsrzf 🇳🇿 671 99 5 Jul 2025 429th tailorspy 671 128 4 Oct 2024 430th HumanoidCPU 670 96 7 Mar 2025 431st jerrandolph 669 177 12 days ago 432nd error256 668 101 24 Oct 2024 433rd Herbert00709 🇵🇱 668 105 14 Jun 2025 434th AlephSquirrel 664 146 14 May 2025 435th MeWhenI 🇻🇦 664 174 13 Feb 2025 436th two-bad 🇬🇧 663 97 2 Oct 2024 436th LordSir101 663 97 10 Aug 2025 438th dbut2 🇦🇺 662 179 31 Oct 2024 439th rniii 661 106 2 Oct 2024 439th gastropner 661 106 11 Feb 2025 441st CaedenHarper 🇨🇦 661 140 4 days ago 442nd 4hg 🇺🇸 659 59 5 Oct 2024 443rd snoozingnewt 🇺🇸 659 87 35 hours ago 444th MeWhenI 🇻🇦 659 88 2 Oct 2024 444th Shanethegamer 🇺🇸 659 88 5 Oct 2024 446th GolfingSuccess 🇬🇷 659 98 5 Oct 2024 446th firegene 🇮🇪 659 98 21 Oct 2024 446th JunkIce 659 98 3 Dec 2024 449th emgordon154 659 111 12 Jan 2025 450th DialFrost 🇸🇬 658 67 22 Dec 2024 First Prev 376–450 of 768 Next Last