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Reversi 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 ArkScript 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 ArkScript 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 241st Yewzir 🇧🇪 671 286 288ms 9 Jun 2024 242nd mousetail 🇳🇱 670 183 2ms 23 Sep 2025 242nd madex 🇩🇪 670 183 2ms 8 days ago 244th MeWhenI 🇻🇦 668 122 511ms 1 Jun 2024 245th Yax42 🇫🇷 666 147 33ms 10 Sep 2025 246th Shanethegamer 🇺🇸 662 148 17ms 12 Jun 2024 247th MeWhenI 🇻🇦 661 205 410ms 1 Jun 2024 248th Shanethegamer 🇺🇸 658 214 113ms 1 Jun 2024 249th orthoplex 🇨🇽 657 121 22ms 1 Jun 2024 250th rucin93 🇵🇱 655 129 134ms 31 Oct 2024 251st Shanethegamer 🇺🇸 655 207 438ms 12 Jun 2024 252nd scpchicken 🇵🇼 654 78 6ms 3 Jun 2024 253rd Yewzir 🇧🇪 653 233 7ms 9 Jun 2024 253rd rucin93 🇵🇱 653 233 45ms 23 days ago 255th nwellnhof 🇩🇪 652 122 18ms 1 Jun 2024 255th MeWhenI 🇻🇦 652 122 24ms 7 Jun 2024 255th sisyphus-ppcg 🇦🇺 652 122 18ms 25 Jul 2024 258th xsot 🇸🇬 652 125 515ms 2 Jun 2024 258th SirBogman 🇺🇸 652 125 500ms 2 Jun 2024 260th MeWhenI 🇻🇦 652 216 117ms 1 Jun 2024 261st KasperKivimaeki 🇫🇮 648 189 3ms 3 Sep 2025 262nd kritixilithos 647 114 35ms 1 Jun 2024 262nd error256 647 114 32ms 16 Jun 2024 262nd MeWhenI 🇻🇦 647 114 36ms 15 Jul 2025 265th MeWhenI 🇻🇦 646 79 6ms 1 Jun 2024 266th ovs-code 🇩🇪 646 123 18ms 1 Jun 2024 266th ryyyn 🇺🇸 646 123 26ms 5 Nov 2025 268th KatieLG 🇬🇧 646 126 2,932ms 6 Oct 2025 269th namelessiw 646 208 792ms 16 Oct 2025 270th Shanethegamer 🇺🇸 637 216 449ms 7 Jun 2024 271st ovs-code 🇩🇪 636 116 32ms 1 Jun 2024 271st retrohun 636 116 36ms 7 Jun 2024 273rd edsrzf 🇳🇿 636 125 17ms 21 days ago 274th helbling 🇨🇭 632 155 21ms 1 Jun 2024 275th MeWhenI 🇻🇦 632 295 35ms 12 Jul 2025 276th 5cw 🇺🇸 631 126 18ms 1 Jun 2024 276th stefangimmillaro 631 126 18ms 30 Jan 2025 276th bricknellj 631 126 17ms 6 Feb 2025 276th KatieLG 🇬🇧 631 126 2,640ms 15 Sep 2025 280th error256 622 238 4,043ms 15 Apr 2025 281st AlephSquirrel 621 128 30ms 4 Jun 2024 282nd MeWhenI 🇻🇦 619 157 10ms 20 Jun 2024 283rd AlephSquirrel 619 225 38ms 21 Oct 2024 284th MeWhenI 🇻🇦 619 255 6ms 10 Jun 2024 285th ovs-code 🇩🇪 617 137 130ms 17 Apr 2025 286th ndren 616 129 298ms 11 Jul 2025 287th emgordon154 616 150 11ms 10 Dec 2024 288th Shanethegamer 🇺🇸 615 158 10ms 13 Jun 2024 289th albanian-laundromat 612 133 478ms 10 Sep 2025 290th GrayJoKing 🇦🇺 612 138 142ms 14 Aug 2024 290th error256 612 138 132ms 6 May 2025 292nd albanian-laundromat 606 463 16ms 18 Sep 2025 293rd retrohun 600 202 195ms 19 Aug 2024 294th galloj 🇨🇿 599 123 28ms 9 Jun 2024 295th Shanethegamer 🇺🇸 599 189 563ms 12 Jun 2024 296th jatloe 598 133 366ms 28 Oct 2024 297th stefangimmillaro 595 124 36ms 12 Nov 2025 298th bizy-coder 595 137 572ms 1 Jun 2024 299th Shanethegamer 🇺🇸 595 234 39ms 4 Oct 2024 300th Shanethegamer 🇺🇸 594 203 344ms 13 Jun 2024 301st blaztoma 🇱🇹 593 86 5ms 20 days ago 302nd GolfingSuccess 🇬🇷 593 134 20ms 1 Jun 2024 303rd MeWhenI 🇻🇦 591 204 462ms 27 Jul 2024 304th CaedenHarper 🇨🇦 587 327 288ms 20 Nov 2025 305th Shanethegamer 🇺🇸 582 231 552ms 24 Sep 2025 306th tatzyr 🇯🇵 581 113 142ms 26 Mar 2025 307th MeWhenI 🇻🇦 579 145 944ms 15 Sep 2025 308th blaztoma 🇱🇹 576 138 24ms 20 days ago 309th Shanethegamer 🇺🇸 574 202 119ms 13 Jun 2024 310th bizy-coder 572 139 30ms 1 Jun 2024 310th cros107 🇦🇺 572 139 28ms 19 Jun 2024 312th edsrzf 🇳🇿 572 241 48ms 4 Apr 2025 313th bac0id 572 259 77ms 24 Jun 2024 314th davecame 568 140 20ms 16 Jul 2024 314th Emutis 🇱🇹 568 140 23ms 19 days ago 316th error256 567 90 4ms 4 Sep 2024 317th MostParsingVex 565 238 750ms 23 Jul 2024 318th Yewzir 🇧🇪 563 268 163ms 9 Jun 2024 319th snoozingnewt 🇨🇦 559 252 106ms 20 Nov 2025 320th dokutan 554 133 30ms 15 Aug 2024 First Prev 241–320 of 441 Next Last