Collatz in Java 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 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 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 CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator 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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 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 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 CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 1st JayXon 🇺🇸 1,000 88 608ms 24 Sep 2025 2nd DialFrost 🇸🇬 989 89 429ms 24 Sep 2025 2nd ovs-code 🇩🇪 989 89 368ms 24 Sep 2025 2nd dokutan 989 89 369ms 24 Sep 2025 2nd sean-niemann 🇺🇸 989 89 477ms 24 Sep 2025 2nd Shanethegamer 🇺🇸 989 89 415ms 25 Sep 2025 2nd nwellnhof 🇩🇪 989 89 425ms 25 Sep 2025 2nd m-tkach 🇺🇦 989 89 364ms 25 Sep 2025 2nd namelessiw 989 89 357ms 2 Oct 2025 2nd Yewzir 🇧🇪 989 89 345ms 2 Oct 2025 2nd Yax42 🇫🇷 989 89 356ms 4 Oct 2025 2nd stefangimmillaro 989 89 352ms 6 Oct 2025 2nd CaedenHarper 🇨🇦 989 89 353ms 27 days ago 2nd Jacob385 989 89 365ms 9 days ago 15th ethanlally 967 91 384ms 16 hours ago 16th albanian-laundromat 936 94 490ms 24 Sep 2025 16th kmathis22 936 94 501ms 22 days ago 16th jkelly467 936 94 357ms 14 days ago 19th snoozingnewt 🇺🇸 926 95 622ms 8 Oct 2025 20th Liibe 907 97 366ms 25 Sep 2025 20th Schmitt-Very-Cool 907 97 487ms 26 Sep 2025 22nd Lydxn 🇨🇦 704 125 364ms 6 May 2022 23rd Irratix 🇳🇱 698 126 312ms 4 May 2022 23rd MeWhenI 🇻🇦 698 126 338ms 4 May 2022 23rd janbehrens 🇩🇪 698 126 325ms 4 May 2022 23rd shellbertt 🇨🇦 698 126 313ms 4 May 2022 23rd inventshah 698 126 319ms 4 May 2022 23rd ScottHamper 698 126 313ms 5 May 2022 23rd 5quiwyrm 698 126 318ms 4 Sep 2022 23rd KrausRaus 🇺🇸 698 126 315ms 9 Sep 2022 23rd Betuaredead 698 126 325ms 5 Jan 2023 23rd annaproxy 698 126 397ms 7 Jan 2023 23rd eMGeeneer 698 126 306ms 15 Jun 2024 23rd mrondon8 698 126 407ms 2 Dec 2024 23rd plastic-bottle 698 126 330ms 27 Aug 2025 36th Luca2812 693 127 382ms 12 Dec 2022 36th h3ra993huskp 🇯🇵 693 127 452ms 17 Sep 2023 36th tigerdan2 🇩🇪 693 127 310ms 19 Dec 2023 36th Apataras 693 127 400ms 16 Jul 2025 40th bac0id 688 128 309ms 29 Jun 2024 41st cbrt-x 682 129 338ms 6 May 2022 41st FlorianCassayre 🇫🇷 682 129 367ms 20 Sep 2022 41st piano-miles 682 129 474ms 8 Feb 2023 41st Widgitty 682 129 375ms 29 May 2023 41st lukashert 682 129 338ms 7 Jun 2023 41st yoshykai 682 129 466ms 27 Mar 2025 47th bwat2 677 130 317ms 5 May 2022 48th SiestaGuru 672 131 377ms 9 Jan 2023 48th HumanoidCPU 672 131 321ms 7 May 2024 50th c0d3-4-F00d 🇩🇪 667 132 327ms 6 May 2022 50th madeforlosers 667 132 317ms 26 Oct 2023 50th Blockyheadman 667 132 380ms 1 Nov 2023 50th SpiritAxolotl 🇺🇸 667 132 390ms 20 Mar 2024 54th ravnskjaer 🇩🇰 662 133 345ms 11 Sep 2024 54th 123mjb 662 133 466ms 26 Sep 2025 56th althryenix 657 134 330ms 25 Jul 2022 56th MrGagnonHPS 657 134 326ms 1 Nov 2023 56th noescareno 657 134 402ms 31 May 2025 59th lukehewittvandy 652 135 430ms 18 Jul 2022 59th OriEy 652 135 319ms 27 Apr 2023 59th Maximizer02 652 135 306ms 8 Jun 2024 59th 0dyse 652 135 447ms 23 Apr 2025 63rd crizin 🇰🇷 647 136 368ms 9 Sep 2023 63rd TheZwierzLF 🇵🇱 647 136 415ms 2 Jun 2025 65th eshilo-draper 642 137 361ms 4 Sep 2022 66th azka1368 638 138 316ms 23 Nov 2023 67th Smetalo 633 139 395ms 25 Aug 2022 67th ToxicP1e 633 139 367ms 2 Mar 2023 69th yashima 624 141 415ms 19 Oct 2024 69th matas132 624 141 394ms 16 Sep 2025 69th katss2 624 141 414ms 19 Sep 2025 72nd msbranicky 607 145 325ms 9 Jan 2024 73rd deancureton 603 146 502ms 24 Mar 2024 74th pyuraii 591 149 384ms 27 Sep 2022 74th Chinay-Domitrix 🇺🇸 591 149 310ms 29 Mar 2025 1–75 of 106 Next Last