The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
Jacobi Symbol 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 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 Chars Time Submitted 161st ovs-code 🇩🇪 815 300 462ms 28 Jan 2025 162nd primo-ppcg 🇹🇭 814 314 24ms 13 Aug 2025 163rd primo-ppcg 🇹🇭 813 141 135ms 12 Apr 2025 164th Shanethegamer 🇺🇸 812 102 11ms 11 May 2022 165th canissimia 🇦🇶 811 226 2,461ms 19 Jul 2022 166th Shanethegamer 🇺🇸 809 100 11ms 11 May 2022 166th jatloe 809 100 10ms 23 Aug 2024 168th HPWiz 🇳🇿 807 58 3ms 25 Jan 2023 169th GrayJoKing 🇦🇺 807 87 9ms 9 May 2022 170th primo-ppcg 🇹🇭 807 150 438ms 21 May 2022 171st sean-niemann 🇺🇸 804 88 122ms 19 May 2025 172nd xnor-gate 803 155 160ms 9 May 2022 173rd kg583 🇺🇸 802 153 6ms 17 hours ago 174th MeWhenI 🇻🇦 802 177 20ms 11 May 2022 175th ndren 801 101 17ms 21 Aug 2025 176th MeWhenI 🇻🇦 801 177 445ms 7 Nov 2025 177th primo-ppcg 🇹🇭 801 195 241ms 30 May 2022 178th CLOStrophobic 🇮🇹 799 180 11ms 7 Mar 2025 179th sean-niemann 🇺🇸 797 178 453ms 24 Sep 2025 179th ScottHamper 797 178 452ms 23 days ago 181st GrayJoKing 🇦🇺 796 104 9ms 20 May 2022 181st lukegustafson 🇺🇸 796 104 10ms 25 Jun 2024 183rd ZakkkkAttackkkk 🇵🇭 793 102 17ms 28 Aug 2023 184th canissimia 🇦🇶 793 433 10ms 17 Jun 2022 185th saito-ta 🇯🇵 792 80 18ms 13 Jun 2022 186th primo-ppcg 🇹🇭 792 179 413ms 21 May 2022 187th primo-ppcg 🇹🇭 790 182 7ms 18 May 2022 188th MeWhenI 🇻🇦 787 47 54ms 25 Aug 2022 189th inventshah 787 157 462ms 30 Jan 2024 190th anter69 🇭🇺 786 103 49ms 16 Feb 2023 190th duckyluuk 🇳🇱 786 103 38ms 5 Jul 2025 192nd ovs-code 🇩🇪 786 167 377ms 14 Sep 2024 193rd GolfingSuccess 🇬🇷 786 311 456ms 27 Jan 2025 194th namelessiw 782 160 380ms 12 Oct 2025 195th btjones0 778 104 17ms 15 Jul 2022 196th lynn 778 160 142ms 9 May 2022 197th didion0 🇺🇸 774 107 10ms 11 May 2022 197th prplz 🇦🇺 774 107 9ms 14 May 2022 197th DialFrost 🇸🇬 774 107 10ms 3 days ago 200th stefangimmillaro 774 152 4,640ms 10 Nov 2024 201st pardouin 🇫🇷 772 104 883ms 27 Jul 2025 202nd MeWhenI 🇻🇦 772 138 8ms 9 May 2024 203rd Irratix 🇳🇱 771 105 10ms 9 May 2022 203rd KatieLG 🇬🇧 771 105 13ms 29 Jul 2024 203rd HumanoidCPU 771 105 11ms 31 Oct 2024 203rd FlorianCassayre 🇫🇷 771 105 12ms 5 Aug 2025 203rd CornerMercury 🇬🇧 771 105 11ms 21 Nov 2025 208th rhdqor213 768 140 2ms 19 Mar 2024 209th dmrichwa 🇺🇸 767 108 10ms 15 Jun 2022 210th edsrzf 🇳🇿 767 160 5ms 24 Jul 2025 211th stefangimmillaro 767 185 878ms 6 Oct 2025 212th jared-hughes 767 548 27ms 21 Dec 2024 213th keelimeguy 🇺🇸 764 106 29ms 14 Jun 2025 214th JohandeRuiter 🇳🇱 762 141 2ms 7 Sep 2024 215th Shanethegamer 🇺🇸 758 100 357ms 16 Jan 2024 216th Lydxn 🇨🇦 754 69 61ms 10 May 2022 216th JayXon 🇺🇸 754 69 57ms 8 Nov 2023 216th pardouin 🇫🇷 754 69 56ms 27 Jul 2025 219th edsrzf 🇳🇿 753 136 2ms 11 Nov 2025 220th jared-hughes 753 164 501ms 23 Oct 2022 221st HumanoidCPU 751 101 354ms 31 Oct 2024 222nd inventshah 751 143 2ms 9 Feb 2023 223rd MeWhenI 🇻🇦 751 168 107ms 23 Jun 2024 224th fkantelberg 749 108 11ms 24 Jul 2025 224th luuumine 🇫🇷 749 108 18ms 24 Nov 2025 226th sean-niemann 🇺🇸 748 137 2ms 19 Nov 2025 227th xsot 🇸🇬 747 83 4ms 20 Jun 2025 228th sean-niemann 🇺🇸 747 169 112ms 27 Dec 2024 229th emgordon154 747 327 474ms 1 Jun 2025 230th msbranicky 746 158 278ms 31 Aug 2023 231st MeWhenI 🇻🇦 744 209 2ms 12 Sep 2022 232nd bob-th 743 109 16ms 8 Aug 2022 232nd jakobkordez 🇸🇮 743 109 31ms 8 Nov 2022 232nd neel11235813 743 109 17ms 17 Jan 2023 232nd DialFrost 🇸🇬 743 109 16ms 19 Jan 2023 232nd commandblockguy 🇺🇸 743 109 17ms 22 Aug 2023 232nd Yewzir 🇧🇪 743 109 17ms 3 Jun 2024 238th Irratix 🇳🇱 741 145 2ms 13 Jun 2022 238th jared-hughes 741 145 2ms 23 Oct 2022 240th Irratix 🇳🇱 740 167 427ms 9 May 2022 First Prev 161–240 of 700 Next Last