The Calendar hole will go live in approximately 7 days. Why not try and solve it ahead of time?
Pascal’s Triangle in Haskell 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 1st HPWiz 🇳🇿 1,000 71 119ms 20 Oct 2020 1st lynn 1,000 71 117ms 14 May 2021 3rd xnor-gate 986 72 120ms 15 Dec 2021 3rd Sakisan 🇧🇪 986 72 129ms 13 Oct 2022 3rd ovs-code 🇩🇪 986 72 124ms 8 Feb 2024 6th Steffan153 🇫🇮 947 75 119ms 7 Mar 2023 7th laikoni 922 77 118ms 3 Mar 2019 7th JayXon 🇺🇸 922 77 113ms 2 Oct 2021 7th GrayJoKing 🇦🇺 922 77 116ms 16 Mar 2022 7th Shanethegamer 🇺🇸 922 77 122ms 19 May 2025 7th Natanaelel 🇸🇪 922 77 127ms 23 Jun 2025 7th edsrzf 🇳🇿 922 77 128ms 16 hours ago 13th achimkrause 910 78 120ms 11 Jul 2018 13th bforte 910 78 116ms 21 Dec 2018 15th primo-ppcg 🇹🇭 899 79 112ms 6 Jul 2019 16th treeowl 888 80 110ms 25 Feb 2019 16th user189032 888 80 114ms 29 May 2019 16th strout 888 80 118ms 15 Dec 2023 16th tobeannouncd 888 80 108ms 8 Jan 2024 16th alomiF 888 80 124ms 23 Aug 2024 21st yzhs 🇩🇪 877 81 109ms 15 Feb 2020 21st cbrt-x 877 81 114ms 18 Sep 2023 21st DialFrost 🇸🇬 877 81 116ms 4 Aug 2024 24th annaproxy 866 82 120ms 7 Feb 2022 25th Johannesd3 855 83 112ms 1 Jul 2019 25th marcin7Cd 855 83 110ms 6 Oct 2020 25th chordowl 855 83 115ms 17 Mar 2021 28th ReidZ3 🇺🇸 845 84 104ms 13 Dec 2020 28th boxjelly 845 84 117ms 6 Jan 2021 28th HallMatthew314 845 84 117ms 13 Jan 2022 28th arjanadriaanse 🇳🇱 845 84 110ms 7 Feb 2022 28th the-zammers 845 84 112ms 1 Oct 2023 28th YAJUE114514 845 84 119ms 24 Aug 2025 34th Bubbler-4 816 87 114ms 18 Jan 2019 34th fruno-bulax 816 87 113ms 16 Feb 2019 34th bejonse 816 87 120ms 8 Aug 2023 37th flawr 798 89 116ms 24 Dec 2018 37th dokutan 798 89 122ms 17 Jul 2025 39th Informagier 789 90 113ms 26 Sep 2020 39th archaephyrryx 789 90 136ms 17 Oct 2020 39th polyrtm 789 90 119ms 14 Apr 2022 39th Awsute 789 90 120ms 20 Apr 2022 43rd RussellEmerine 763 93 115ms 28 Dec 2019 44th citsur 755 94 117ms 10 Jun 2019 44th Irratix 🇳🇱 755 94 119ms 12 Oct 2021 44th aDwarfNamedUrist 755 94 115ms 17 Aug 2023 47th drbalan 740 96 117ms 20 Jul 2020 48th olligobber 🇦🇺 732 97 2,729ms 22 May 2020 49th mossprescott 724 98 111ms 13 Aug 2018 49th yanqui-uxo 724 98 1,051ms 4 Sep 2018 51st HolmDev 710 100 141ms 15 Sep 2025 52nd snoozingnewt 🇨🇦 703 101 126ms 3 Oct 2025 53rd awnion 696 102 121ms 22 Apr 2021 53rd inverseLorentz 🇦🇺 696 102 113ms 10 May 2024 55th CatsAreFluffy 645 110 115ms 18 Feb 2023 56th glassala 640 111 116ms 26 Oct 2024 57th jtaxen 623 114 124ms 10 Jul 2024 58th hjcafaroUC 617 115 110ms 10 Jun 2021 58th epic-programmer-guy 617 115 1,059ms 26 Dec 2023 60th XaavanDolence 602 118 111ms 8 Sep 2020 60th rak1507 🇬🇧 602 118 117ms 15 May 2021 62nd anastos 568 125 866ms 23 Jul 2018 63rd brimstonetrader 534 133 121ms 7 Jan 2024 64th Ronan998 225 316 114ms 1 Aug 2020 65th Haksell 🇦🇶 89 800 105ms 1 Dec 2019 65th KatieLG 🇬🇧 89 800 111ms 23 Nov 2020 65th MeWhenI 🇻🇦 89 800 108ms 7 Jul 2021 65th retrohun 89 800 110ms 28 Dec 2022 65th KatieLG-Transpiler 🇬🇧 89 800 114ms 14 May 2023 65th HumanoidCPU 89 800 116ms 19 May 2024 65th Mabeloid 🇳🇴 89 800 105ms 3 Oct 2024 65th CaedenHarper 🇨🇦 89 800 109ms 25 Jan 2025 1–72 of 72