Catalan Numbers 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 Binary Lambda Calculus Calendar Connect Four Continued Fractions 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 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 Binary Lambda Calculus Calendar Connect Four Continued Fractions 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 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 750th Yewzir 🇧🇪 799 38 195ms 7 May 2024 752nd j-Ewan 798 46 444ms 11 Feb 2022 752nd czylabsonasa 🇭🇺 798 46 263ms 14 Jun 2022 754th dokutan 798 136 349ms 13 days ago 755th Betuaredead 798 147 266ms 21 Jan 2023 756th error256 797 51 76ms 15 Jan 2025 757th Matgc04 796 91 338ms 17 Nov 2023 758th albanian-laundromat 795 44 698ms 25 Sep 2025 758th Yewzir 🇧🇪 795 44 740ms 6 days ago 760th MeWhenI 🇻🇦 795 85 3,040ms 27 Oct 2024 761st msbranicky 793 54 9ms 23 Aug 2023 761st Code-Coder-coder 793 54 9ms 12 Oct 2025 763rd Ripick 793 148 276ms 16 Feb 2023 764th MeWhenI 🇻🇦 789 45 29ms 16 Apr 2023 765th Shanethegamer 🇺🇸 787 92 331ms 29 Jan 2022 765th dokutan 787 92 344ms 24 Mar 2025 767th Yewzir 🇧🇪 786 39 45ms 7 May 2024 767th codereport 🇨🇦 786 39 35ms 21 Apr 2025 767th Chara-0x 786 39 34ms 18 Sep 2025 770th stefangimmillaro 786 86 2,979ms 4 Nov 2024 771st didion0 🇺🇸 785 50 9ms 16 Feb 2022 771st Natanaelel 🇸🇪 785 50 9ms 3 Jan 2024 771st weliveinhell 🇭🇹 785 50 8ms 11 Jan 2024 771st inverseLorentz 🇦🇺 785 50 8ms 1 Apr 2024 771st JOrE20 785 50 9ms 6 days ago 776th annaproxy 785 65 3ms 3 Oct 2022 777th Shanethegamer 🇺🇸 784 65 6ms 19 Dec 2023 777th Steffan153 🇫🇮 784 65 7ms 20 Dec 2023 779th KatieLG 🇬🇧 783 47 407ms 15 Jan 2024 779th Yewzir 🇧🇪 783 47 383ms 7 May 2024 781st KasperKivimaeki 🇫🇮 782 150 263ms 29 Sep 2025 782nd stellartux 781 47 299ms 1 Jan 2024 783rd jared-hughes 781 139 342ms 24 Sep 2025 784th stefangimmillaro 781 159 27ms 4 May 2023 785th 2011-Chan-Ethan 779 55 10ms 14 Jul 2023 785th cuboids 779 55 9ms 10 Jul 2024 785th jatloe 779 55 10ms 27 Sep 2024 785th Emutis 🇱🇹 779 55 12ms 27 Oct 2024 789th hamhub7 779 93 337ms 3 Aug 2022 789th MeWhenI 🇻🇦 779 93 342ms 15 Oct 2022 791st MeWhenI 🇻🇦 778 23 39ms 25 Jul 2022 791st AlephSquirrel 778 23 44ms 31 Dec 2022 793rd DialFrost 🇸🇬 777 68 5ms 7 Dec 2024 793rd pardouin 🇫🇷 777 68 8ms 20 Mar 2025 795th KasperKivimaeki 🇫🇮 777 147 5ms 4 Jun 2025 796th kimbo 🇺🇸 777 151 267ms 25 Dec 2022 797th rak1507 🇬🇧 776 52 31ms 29 Jan 2022 798th Shanethegamer 🇺🇸 776 59 143ms 29 Jan 2022 798th Z-snails 776 59 145ms 28 Feb 2023 800th inventshah 773 22 2ms 8 May 2022 801st KatieLG 🇬🇧 773 64 956ms 16 Oct 2022 802nd Natanaelel 🇸🇪 772 46 32ms 3 Jan 2024 803rd kg583 🇺🇸 772 66 7ms 3 hours ago 804th Shanethegamer 🇺🇸 771 58 15ms 29 Jan 2022 805th ovs-code 🇩🇪 771 82 107ms 14 Oct 2022 806th jared-hughes 771 307 22ms 8 Jul 2024 807th codingisgreatbutiamnot 769 51 8ms 25 Jul 2024 808th Yax42 🇫🇷 769 141 331ms 4 Oct 2025 809th dokutan 767 153 274ms 24 Mar 2025 810th albanian-laundromat 766 48 404ms 7 Oct 2025 811th ovs-code 🇩🇪 766 161 132ms 21 Apr 2025 812th MeWhenI 🇻🇦 765 48 376ms 15 Feb 2023 813th petroselo 765 56 9ms 12 Apr 2022 813th SB-945 765 56 10ms 10 Jul 2023 813th JunkIce 765 56 13ms 24 Nov 2024 813th kevinnaviapaiva 765 56 10ms 19 Dec 2024 813th wobblybits 765 56 10ms 19 Aug 2025 818th brimstonetrader 763 60 126ms 10 Jan 2024 818th YAJUE114514 763 60 145ms 23 Jul 2025 820th Yewzir 🇧🇪 763 102 154ms 7 May 2024 821st LeeCamp 762 27 37ms 10 Feb 2022 822nd snoozingnewt 🇺🇸 762 154 282ms 22 days ago 823rd nipzu 761 162 148ms 2 Apr 2024 824th pardouin 🇫🇷 760 51 81ms 13 Sep 2024 825th SirFireball3521 754 52 9ms 3 Nov 2022 First Prev 751–825 of 1,935 Next Last