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Leap Years in JavaScript in bytes. 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 Gray Code Decoder Gray Code Encoder 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 Bytes Time Submitted 189th adriweb 🇫🇷 870 46 10ms 28 Aug 2023 189th stellartux 870 46 9ms 27 Dec 2023 189th itserasmus 870 46 11ms 26 Jan 2024 189th HumanoidCPU 870 46 11ms 19 Feb 2024 189th rollershutter 870 46 11ms 4 Jul 2024 189th deancureton 870 46 10ms 29 Dec 2024 189th duckyluuk 🇳🇱 870 46 10ms 22 Jan 2025 189th acer-xq 870 46 12ms 4 Feb 2025 189th BalaM314 870 46 9ms 8 Feb 2025 189th Laellekoenig 870 46 9ms 22 Oct 2025 189th RealBen9 🇬🇧 870 46 10ms 13 days ago 212th NatNgs 851 47 11ms 9 Jan 2020 212th Hydrophobefireman 851 47 10ms 16 Jul 2020 212th patterson-tom 851 47 10ms 9 Sep 2020 212th jake-freeman 851 47 10ms 10 Sep 2020 212th undefined-moe 851 47 11ms 23 Feb 2021 212th Hacksore 🇺🇸 851 47 10ms 18 Aug 2021 212th MathisBullinger 851 47 10ms 14 Nov 2021 212th BambooleanLogic 🇸🇪 851 47 10ms 26 Nov 2021 212th uttumuttu 🇫🇮 851 47 11ms 4 Jan 2022 212th Setvizan 851 47 10ms 14 Apr 2022 212th uiamn 851 47 10ms 9 Sep 2022 212th CatsAreFluffy 851 47 10ms 19 Feb 2023 212th amiralitaheri 851 47 10ms 23 Feb 2023 212th Andrey-Plotnikov 851 47 10ms 22 Aug 2023 212th MWI-polygolf 851 47 12ms 6 Dec 2023 212th steffan-polygolf 851 47 10ms 14 Feb 2024 212th alex742 851 47 15ms 18 Jul 2024 212th Sephirem98 851 47 14ms 27 Aug 2024 212th allistersascha 851 47 11ms 27 Sep 2024 212th denkyuu1 851 47 10ms 22 Feb 2026 232nd mintypython 833 48 13ms 7 Dec 2018 232nd oscarlvp 833 48 11ms 30 Apr 2019 232nd Ranner198 833 48 12ms 14 Nov 2019 232nd gnlow 🇰🇷 833 48 11ms 3 May 2020 232nd tscherter 833 48 10ms 6 Dec 2020 232nd stadamdoki 833 48 10ms 6 Apr 2021 232nd devinwelch 833 48 10ms 7 Oct 2021 232nd Michal-Miky-Jankovsky 833 48 12ms 20 Nov 2021 232nd ThibWillFulll 833 48 11ms 5 May 2022 232nd iliazeus 833 48 10ms 3 Sep 2022 232nd FilipMyhren 833 48 11ms 23 Nov 2022 232nd FrederikHutfless 🇩🇪 833 48 11ms 22 Dec 2022 232nd Igyeom 🇰🇷 833 48 10ms 12 Jun 2023 232nd Isaac-NTT 833 48 10ms 7 Jul 2023 232nd AndFly33 833 48 10ms 7 Jul 2023 232nd AustinH-Ntt 833 48 10ms 7 Jul 2023 232nd johnburton0517 833 48 11ms 7 Jul 2023 232nd coreynash 833 48 10ms 27 Oct 2023 232nd sparksis 🇨🇦 833 48 10ms 20 Nov 2023 232nd TheLastZombie 833 48 10ms 15 May 2024 232nd Jacob385 833 48 13ms 3 Sep 2024 232nd eranws 833 48 11ms 23 Dec 2024 254th juntuu 816 49 11ms 24 Mar 2019 254th Mikaeel66 816 49 12ms 11 Nov 2019 254th jeffreymeng 816 49 12ms 24 Nov 2019 254th Kibble 816 49 10ms 11 Jul 2020 254th richard-oelze 🇩🇪 816 49 9ms 11 Jul 2020 254th masashimachida 816 49 10ms 29 Jul 2020 254th ArmaanAS 816 49 10ms 8 Mar 2021 254th RedstoneTim 816 49 10ms 26 Jun 2021 254th Foxinatel 816 49 9ms 22 Aug 2021 254th olivermrose 🇺🇸 816 49 9ms 23 Aug 2021 254th lukaskairys 816 49 10ms 25 Sep 2021 254th Giga-Bowser 816 49 9ms 5 Jan 2022 254th c0d3-4-F00d 🇩🇪 816 49 9ms 9 Feb 2022 254th owen-c-parker 🇺🇸 816 49 10ms 31 Mar 2023 254th Inbarw100 816 49 12ms 10 Jun 2023 254th Evankhell0 816 49 10ms 28 Jul 2023 254th NickTheEASDude 🇺🇸 816 49 11ms 18 Jan 2024 254th dijs 816 49 10ms 8 Mar 2024 254th xyangst 816 49 13ms 26 Sep 2024 254th ffelixm 816 49 10ms 30 May 2025 254th a6166231 🇨🇳 816 49 11ms 3 Jun 2025 254th johnkiernander 816 49 12ms 16 Dec 2025 276th mikerees 800 50 12ms 1 Aug 2019 276th jakobwitte 800 50 12ms 5 Mar 2020 276th vgroen 800 50 10ms 31 May 2020 276th ibeucaly 800 50 11ms 22 Oct 2021 276th Romain-1 🇫🇷 800 50 10ms 29 Apr 2022 276th 7f-galaxii 800 50 12ms 7 Dec 2022 276th dgerblick 800 50 11ms 16 Jun 2023 276th deniz-blue 800 50 10ms 20 Oct 2023 276th SpiritAxolotl 🇺🇸 800 50 11ms 21 Mar 2024 276th codingisgreatbutiamnot 800 50 11ms 14 Aug 2024 276th henrygagnier 800 50 14ms 19 Nov 2024 276th alexsave 800 50 10ms 13 Oct 2025 288th ly0va 784 51 9ms 6 Jan 2019 288th tomh1012 784 51 10ms 5 Sep 2020 288th VegaQ8 784 51 10ms 26 Nov 2020 288th Seanharrs 🇦🇺 784 51 11ms 15 Dec 2021 288th fourth-bit 784 51 10ms 14 Jan 2022 288th Ashikpaul 🇮🇳 784 51 10ms 24 Jul 2022 288th Bananapants22 784 51 11ms 20 Aug 2022 288th GreenBeansAgainstVeganism 784 51 10ms 14 Jan 2023 288th daniel-cardone 784 51 11ms 24 Aug 2023 288th Florian-Mt 784 51 10ms 29 Sep 2023 288th sulphemi 784 51 10ms 5 Mar 2024 288th dtbao20 🇻🇳 784 51 13ms 1 Oct 2024 288th Ralac07 🇦🇺 784 51 11ms 27 Oct 2025 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