The Calendar hole will go live in approximately 2 days. Why not try and solve it ahead of time?
Farey Sequence in all languages 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 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 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 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 Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 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 Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 801st MeWhenI 🇻🇦 548 115 68ms 1 Dec 2023 802nd NanduBC 548 116 11ms 6 Sep 2024 803rd snoozingnewt 🇨🇦 546 156 2ms 15 Oct 2025 804th MWI-polygolf 545 137 4ms 7 Dec 2023 805th Apataras 545 139 395ms 3 Jul 2025 806th weliveinhell 🇭🇹 545 147 121ms 2 Dec 2023 807th KatieLG 🇬🇧 543 113 617ms 19 Apr 2025 808th HumanoidCPU 542 119 2ms 5 Mar 2024 809th janbehrens 🇩🇪 538 120 2ms 22 Dec 2023 810th msbranicky 538 149 122ms 1 Jan 2024 811th msbranicky 536 151 166ms 2 Jan 2024 812th CatsAreFluffy 536 159 65ms 31 Jan 2024 813th msbranicky 535 117 139ms 2 Jan 2024 814th blaztoma 🇱🇹 534 78 39ms 4 Nov 2025 815th dokutan 534 104 847ms 29 Oct 2024 816th jeff-at-tamer-dot-codes 🇺🇸 534 119 20ms 19 Dec 2023 817th MeWhenI 🇻🇦 532 84 2ms 1 Dec 2023 818th janbehrens 🇩🇪 530 138 400ms 17 Apr 2025 819th Yewzir 🇧🇪 529 150 3ms 29 Mar 2024 820th HumanoidCPU 529 153 92ms 16 Nov 2025 821st dcgjb 527 80 975ms 25 Mar 2024 822nd YAJUE114514 527 138 146ms 23 Jul 2025 823rd anarconic 526 125 2ms 11 Dec 2023 824th Yewzir 🇧🇪 525 117 88ms 5 Feb 2024 825th TinyTheBrontosaurus 525 121 19ms 3 Dec 2023 825th RobertHoeh 525 121 11ms 9 Dec 2023 825th klixel 🇨🇦 525 121 10ms 21 Jun 2025 828th MeWhenI 🇻🇦 525 132 12ms 12 Dec 2023 829th msbranicky 522 152 3ms 2 Jan 2024 830th HumanoidCPU 521 80 48ms 5 Jun 2024 831st snoozingnewt 🇨🇦 521 121 1,597ms 15 Oct 2025 832nd Just4FunCoder 521 122 20ms 26 Feb 2024 832nd SB-945 521 122 24ms 7 Apr 2024 834th steffan-polygolf 521 133 11ms 29 Feb 2024 835th dokutan 517 121 119ms 29 Oct 2024 836th JDiLenarda 🇫🇷 517 122 1,326ms 13 Sep 2024 837th Stockoh 🇫🇷 517 123 11ms 23 Apr 2024 837th jatloe 517 123 24ms 24 Aug 2024 839th snoozingnewt 🇨🇦 516 125 2ms 15 Oct 2025 840th aksyristos 515 81 48ms 30 Nov 2024 841st janbehrens 🇩🇪 514 97 602ms 9 Jan 2024 842nd Kokusui 🇯🇵 513 108 5ms 26 Jul 2024 843rd yuchuehw 513 124 20ms 15 May 2024 843rd Flekay 🇩🇪 513 124 19ms 11 Jul 2025 845th KatieLG 🇬🇧 510 109 1,050ms 2 Jan 2024 846th estomagordo 🇳🇱 509 125 10ms 25 Mar 2025 847th snoozingnewt 🇨🇦 509 136 9ms 15 Oct 2025 848th dokutan 509 156 3ms 26 Oct 2024 849th snoozingnewt 🇨🇦 508 143 3,668ms 15 Oct 2025 850th msbranicky 507 116 112ms 1 Jan 2024 851st typeswitch-dev 🇵🇹 507 151 5ms 25 Jun 2024 852nd alphafalfa 506 107 2ms 26 Aug 2024 853rd dokutan 505 100 7ms 28 Oct 2024 854th Vaekor 504 126 12ms 28 Feb 2024 855th msbranicky 501 111 976ms 2 Jan 2024 856th KatieLG 🇬🇧 501 170 5ms 3 Dec 2023 857th scpchicken 🇵🇼 497 90 3ms 13 Dec 2023 858th 4ndyJ 🇬🇧 497 128 10ms 29 Feb 2024 859th evnu 497 160 100ms 13 Oct 2025 860th msbranicky 496 142 17ms 6 Jan 2024 861st Yewzir 🇧🇪 494 101 238ms 26 Feb 2024 862nd Yewzir 🇧🇪 494 112 7ms 5 Feb 2024 863rd HumanoidCPU 493 129 21ms 5 Jun 2024 863rd CutSandstone 493 129 11ms 19 Jul 2024 863rd wh3n3v3r 🇨🇿 493 129 21ms 18 Nov 2024 866th dokutan 492 163 117ms 6 Nov 2024 867th snoozingnewt 🇨🇦 491 116 694ms 15 Oct 2025 868th MeWhenI 🇻🇦 490 89 117ms 1 Dec 2023 869th addmai 489 130 19ms 30 Jul 2025 870th dokutan 488 111 2ms 28 Apr 2025 871st HumanoidCPU 487 126 591ms 5 Jun 2024 872nd HumanEquivalentUnit 487 133 14ms 5 Dec 2023 873rd Protothor 485 119 10ms 20 Jul 2025 874th bjornmartensson 485 131 77ms 11 Dec 2023 874th Mabeloid 🇳🇴 485 131 19ms 11 Sep 2024 876th snoozingnewt 🇨🇦 484 112 2ms 15 Oct 2025 877th msbranicky 483 130 2ms 2 Jan 2024 878th michelebastione 🇮🇹 482 132 23ms 23 Dec 2023 878th CatsAreFluffy 482 132 25ms 31 Jan 2024 878th FranklinJiaChen 482 132 27ms 4 Aug 2024 First Prev 801–880 of 1,485 Next Last