The Set hole will go live in approximately 2 days. Why not try and solve it ahead of time?
Christmas Trees in C# in bytes. 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 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 Maze Medal Tally 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 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Set Snake Sphenic Numbers Star Wars GPT Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Maze Medal Tally 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 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Set Snake Sphenic Numbers Star Wars GPT Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 1st Lydxn 🇨🇦 1,000 87 14 Jul 2023 2nd JayXon 🇺🇸 946 92 14 Jul 2023 3rd Attero 🇸🇪 888 98 21 Nov 2021 3rd nwellnhof 🇩🇪 888 98 21 Nov 2021 3rd primo-ppcg 🇹🇭 888 98 21 Nov 2021 6th sean-niemann 🇺🇸 870 100 13 Jul 2023 7th Yax42 🇫🇷 853 102 29 Jan 2025 8th namelessiw 845 103 2 Jul 2024 9th janbehrens 🇩🇪 837 104 21 Nov 2021 10th tomtheisen 🇺🇸 829 105 14 Dec 2022 11th heypwesto 🇳🇿 821 106 21 Nov 2021 11th postie77 821 106 21 Dec 2022 13th iznax 798 109 21 Nov 2021 13th edwinvanschaick 798 109 25 Apr 2022 13th MeWhenI 🇻🇦 798 109 27 Oct 2022 16th revlayle 🇺🇸 770 113 21 Nov 2021 17th Gaddy 🇫🇷 763 114 9 May 2022 17th Romain-1 🇫🇷 763 114 9 May 2022 19th stefangimmillaro 750 116 17 Oct 2022 20th m-tkach 🇺🇦 744 117 5 Oct 2022 20th AdrienHache 🇫🇷 744 117 28 Jan 2025 22nd abel465 🇳🇿 731 119 21 Nov 2021 22nd foxmcloud555 731 119 16 Apr 2022 24th roavin 725 120 9 Jun 2022 25th bstrautin 719 121 21 Nov 2021 26th logicolor 713 122 28 Apr 2022 26th Shanethegamer 🇺🇸 713 122 29 Oct 2024 28th vmcnabb 🇳🇿 702 124 21 Nov 2021 28th brianonymous 702 124 31 Jul 2022 28th Adix-null 🇱🇹 702 124 23 Jun 2023 31st TRexOnGit 690 126 30 Jan 2024 32nd Yewzir 685 127 30 Dec 2023 33rd hemphen 680 128 30 Jul 2022 34th Adelzu 669 130 21 Nov 2021 34th tdkkdt 🇷🇺 669 130 21 Nov 2021 34th FreyLuis 669 130 8 Dec 2023 34th bac0id 669 130 5 Jul 2024 34th Bubblesphere 669 130 24 Dec 2024 39th SrGalletaEXT 664 131 24 Jul 2024 40th billings7 🇬🇧 659 132 21 Nov 2021 40th bschorno 659 132 29 Jul 2022 42nd annaproxy 654 133 22 May 2023 43rd Kloppermand 🇩🇰 649 134 7 Oct 2022 44th kawamuu5 640 136 15 Jun 2023 44th rifatx 640 136 5 Jul 2024 46th Athight 635 137 21 Nov 2021 46th dokutan 635 137 20 Aug 2024 48th aliakseikalosha 630 138 3 Oct 2024 49th ericlangedijk 🇸🇮 626 139 16 Mar 2022 49th snoozingnewt 🇺🇸 626 139 4 Nov 2023 51st MHunter-NZ 🇳🇿 621 140 21 Nov 2021 52nd tomh1012 617 141 21 Nov 2021 52nd arctouch-cristiannevianna 617 141 8 Feb 2024 54th ChrisTheisen 604 144 14 Dec 2022 55th Cbrt74088 600 145 21 Nov 2021 55th ILMTitan 600 145 21 Nov 2021 55th InDey 600 145 21 Nov 2021 55th HassanAliKadhem 🇧🇭 600 145 14 Jan 2022 55th LS2021 600 145 24 Nov 2023 55th dpethes 600 145 15 Jan 2024 55th KatieLG 🇬🇧 600 145 30 Jul 2024 62nd c0d3-4-F00d 🇩🇪 596 146 19 Apr 2022 63rd GulgDev 592 147 22 Mar 2023 64th MichalMarsalek 🇨🇿 584 149 9 Nov 2022 65th jahakari 580 150 28 Dec 2020 65th hamhub7 580 150 10 Aug 2022 67th najs91 576 151 23 Nov 2021 68th kjhughes097 🇬🇧 572 152 2 Sep 2020 68th eshilo-draper 572 152 4 Sep 2022 70th Meowsan91 🇨🇿 561 155 21 Nov 2021 70th pikti 561 155 21 Nov 2021 72nd mandm-pt 558 156 21 Nov 2021 72nd Re-Adventures 🇮🇳 558 156 30 Nov 2023 74th krcs 🇵🇱 554 157 26 Dec 2021 75th PlatypusEggs 547 159 20 Dec 2021 1–75 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