The Billiards hole will go live in 5 days. Why not try and solve it ahead of time?
ISBN in C# in chars. 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 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 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 Rule 110 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Crystal D Dart Elixir F# Factor Forth Fortran Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Crystal D Dart Elixir F# Factor Forth Fortran Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 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 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 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 Rule 110 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 # Golfer Points Chars Time 1st btnlq 1,000 82 11 Mar 2023 1st JayXon 🇺🇸 1,000 82 11 Mar 2023 1st Lydxn 🇨🇦 1,000 82 19 May 2023 1st nwellnhof 🇩🇪 1,000 82 27 Jun 2023 5th tomtheisen 🇺🇸 988 83 29 Jan 2023 6th namelessiw 965 85 25 days ago 7th Steffan153 🇫🇮 943 87 21 Aug 2024 8th MeWhenI 🇻🇦 911 90 9 Aug 2023 9th AdrienHache 🇫🇷 901 91 30 Nov 2023 10th Shanethegamer 🇺🇸 891 92 26 Mar 2024 11th prplz 🇦🇺 882 93 18 Jan 2022 11th hemphen 882 93 28 Aug 2022 11th feberhard 882 93 6 Apr 2023 14th annaproxy 872 94 19 Mar 2022 15th ScottHamper 854 96 26 Feb 2022 15th stefangimmillaro 854 96 5 Jan 2023 15th bojernico 854 96 6 Apr 2023 18th tomh1012 837 98 31 Jan 2022 18th pkim 837 98 6 Apr 2023 18th danielxbauer 837 98 6 Apr 2023 18th meinsiedler 837 98 6 Apr 2023 18th postie77 837 98 8 May 2023 23rd Skleni 828 99 6 Apr 2023 24th sean-niemann 🇺🇸 781 105 5 Jan 2023 24th billings7 🇬🇧 781 105 12 Nov 2023 26th ericlangedijk 🇸🇮 774 106 19 Mar 2022 27th revlayle 🇺🇸 759 108 20 Jan 2022 27th primo-ppcg 🇹🇭 759 108 20 Apr 2022 29th Yax42 🇫🇷 745 110 24 May 2024 30th Yewzir 🇧🇪 732 112 1 Dec 2023 31st fabianrieder 719 114 6 Apr 2023 32nd janbehrens 🇩🇪 713 115 23 Jun 2023 33rd roavin 707 116 23 Jun 2022 33rd hamhub7 707 116 9 Aug 2022 33rd bac0id 707 116 22 Sep 2023 36th m-tkach 🇺🇦 678 121 10 Jan 2022 36th arctouch-cristiannevianna 678 121 1 Mar 2024 36th acer-xq 678 121 5 Aug 2024 39th rifatx 667 123 14 Jul 2024 40th Mikey-Beep 🇬🇧 646 127 4 Sep 2024 41st p-vf 🇨🇭 636 129 16 Jul 2022 42nd kenthie42 617 133 7 Aug 2024 43rd adotagarwal 603 136 4 Mar 2023 43rd aliakseikalosha 603 136 7 Oct 2024 45th Adix-null 🇱🇹 594 138 24 May 2023 46th malworthy 566 145 9 Aug 2024 47th msbranicky 550 149 22 Aug 2023 48th krcs 🇵🇱 532 154 10 May 2022 48th tobiasberei 532 154 6 Apr 2023 50th KatieLG 🇬🇧 474 173 15 Jan 2022 51st gblikas 432 190 21 Aug 2024 52nd memmaptensor 🇹🇭 410 200 21 Jan 2022 53rd 0xDomi 380 216 6 Apr 2023 54th Trickermand 243 337 12 Dec 2022 55th KatieLG-Transpiler 🇬🇧 193 425 4 Jul 2022 1–55 of 55