ISBN 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 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 Gray Code Decoder Gray Code Encoder 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 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder 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 401st clockworknazo 828 129 2ms 18 Sep 2022 402nd emplv 🇱🇻 828 160 306ms 6 Jan 2023 402nd KasperKivimaeki 🇫🇮 828 160 293ms 20 Oct 2025 404th Sakisan 🇧🇪 827 64 1,061ms 30 Jun 2022 405th prplz 🇦🇺 827 93 558ms 18 Jan 2022 405th hemphen 827 93 625ms 28 Aug 2022 405th feberhard 827 93 536ms 6 Apr 2023 405th sean-niemann 🇺🇸 827 93 540ms 19 Apr 2025 409th lynn 826 148 30ms 18 Jul 2023 410th emplv 🇱🇻 825 101 7ms 3 Jul 2023 410th stefangimmillaro 825 101 7ms 12 Oct 2023 410th edsrzf 🇳🇿 825 101 6ms 7 Oct 2025 413th MeWhenI 🇻🇦 824 69 5ms 13 Aug 2024 414th Mandrzejy 🇵🇱 824 134 64ms 13 Sep 2024 415th SirBogman 🇺🇸 823 37 2ms 27 May 2024 415th Yewzir 🇧🇪 823 37 2ms 19 Dec 2024 417th CLOStrophobic 🇮🇹 823 123 8ms 21 Jan 2025 417th kg583 🇺🇸 823 123 8ms 24 days ago 419th dcgjb 822 67 332ms 14 Feb 2024 420th GrayJoKing 🇦🇺 822 130 2ms 12 Sep 2022 421st Bubbler-4 821 48 33ms 15 Nov 2022 421st stackofbears 821 48 32ms 27 Dec 2023 421st 2bular 821 48 33ms 8 days ago 424th duckyluuk 🇳🇱 821 75 416ms 29 Aug 2024 425th jeff-at-tamer-dot-codes 🇺🇸 821 84 10ms 19 May 2023 425th Artemis21 🇬🇧 821 84 11ms 10 Jan 2025 425th Flekay 🇩🇪 821 84 10ms 15 Feb 2026 428th Shanethegamer 🇺🇸 821 112 2ms 20 Apr 2022 429th Shanethegamer 🇺🇸 820 107 152ms 24 May 2025 430th m-tkach 🇺🇦 820 130 544ms 25 Sep 2025 431st pardouin 🇫🇷 819 71 1,321ms 2 Sep 2025 432nd DialFrost 🇸🇬 819 286 140ms 22 Apr 2025 432nd frankgraziano 819 286 651ms 31 Jan 2026 434th Shanethegamer 🇺🇸 818 63 1ms 13 May 2023 435th annaproxy 818 94 466ms 19 Mar 2022 436th Irratix 🇳🇱 818 135 460ms 14 May 2022 437th primo-ppcg 🇹🇭 818 164 25ms 25 Jun 2022 438th o0lit3 🇺🇸 817 51 4ms 11 Jan 2022 439th MeWhenI 🇻🇦 817 102 7ms 26 Nov 2023 440th JayXon 🇺🇸 816 55 35ms 25 Feb 2022 441st Shanethegamer 🇺🇸 816 124 6ms 27 Aug 2024 442nd jared-hughes 816 200 8ms 18 Dec 2024 443rd GrayJoKing 🇦🇺 815 99 4ms 20 Sep 2023 444th Yewzir 🇧🇪 814 113 2ms 29 Nov 2023 444th drabart 🇵🇱 814 113 2ms 18 Dec 2023 446th sean-niemann 🇺🇸 813 163 307ms 30 Aug 2023 446th Yewzir 🇧🇪 813 163 288ms 7 Feb 2024 446th CaedenHarper 🇨🇦 813 163 288ms 2 Nov 2025 449th saito-ta 🇯🇵 812 32 41ms 19 Aug 2022 449th canissimia 🇦🇶 812 32 38ms 19 Aug 2022 451st m42km 812 85 10ms 24 Oct 2023 451st emgordon154 812 85 10ms 1 Aug 2024 451st JunkIce 812 85 10ms 25 Nov 2024 451st robin-scragg 812 85 10ms 25 Jul 2025 455th itsh01 812 87 10ms 13 Mar 2022 455th AlephSquirrel 812 87 10ms 15 Feb 2023 455th danielphilpottwork 812 87 9ms 20 Dec 2023 458th Shanethegamer 🇺🇸 812 136 62ms 20 Apr 2022 459th emgordon154 812 181 1,625ms 22 Dec 2025 460th btnlq 811 125 14ms 12 Jan 2022 461st Yewzir 🇧🇪 810 76 394ms 22 Jun 2024 461st Shanethegamer 🇺🇸 810 76 406ms 10 Dec 2024 463rd stefangimmillaro 810 87 2,291ms 24 Nov 2024 463rd emgordon154 810 87 2,364ms 6 Mar 2025 465th DialFrost 🇸🇬 810 118 461ms 27 Nov 2024 466th janbehrens 🇩🇪 809 103 7ms 2 Jul 2023 467th plcc0 809 125 6ms 23 Mar 2025 468th ovs-code 🇩🇪 807 90 65ms 12 Sep 2024 468th primo-ppcg 🇹🇭 807 90 62ms 5 Apr 2025 470th jotslo 🇬🇧 807 107 2ms 17 Jul 2022 471st Mandrzejy 🇵🇱 807 114 1ms 13 Sep 2024 471st AZTECCO 807 114 2ms 16 Sep 2025 473rd error256 807 132 385ms 21 Nov 2025 474th m-tkach 🇺🇦 806 137 62ms 15 Jan 2022 474th sean-niemann 🇺🇸 806 137 62ms 3 Feb 2024 476th DialFrost 🇸🇬 805 72 755ms 4 Sep 2025 477th GrayJoKing 🇦🇺 805 113 430ms 24 Jul 2025 478th GrayJoKing 🇦🇺 804 152 29ms 18 Jul 2023 478th m-tkach 🇺🇦 804 152 29ms 10 Feb 2026 480th albanian-laundromat 803 133 3ms 22 Sep 2025 First Prev 401–480 of 1,604 Next Last