The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Cubes in all languages 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 480th Psirving 612 225 10ms 3 Aug 2020 480th bobbysq 612 225 10ms 22 Jul 2023 480th roguh 🇬🇹 612 225 9ms 20 Oct 2024 484th CaedenHarper 🇨🇦 612 259 10ms 6 Nov 2025 485th AlephSquirrel 610 213 618ms 21 Jan 2024 486th Pyroan 610 226 9ms 3 Aug 2023 486th FranklinJiaChen 610 226 10ms 3 Jul 2024 486th EthanJantz 610 226 10ms 12 Aug 2025 489th frankgraziano 610 327 7ms 1 Feb 2026 490th msbranicky 609 305 2ms 20 Jan 2025 491st jerrandolph 608 349 290ms 20 Oct 2023 492nd primo-ppcg 🇹🇭 608 359 45ms 3 Jul 2023 493rd Wanderkind 🇰🇷 608 437 37ms 9 Jan 2023 494th adoxography 607 203 35ms 6 Feb 2019 495th commandz0 🇺🇸 607 214 572ms 1 Sep 2025 496th rowboat1 607 227 10ms 18 Jun 2022 496th NerdyMcNerd42 607 227 10ms 20 Aug 2022 496th DialFrost 🇸🇬 607 227 10ms 19 Nov 2022 496th smilesformiles3 607 227 11ms 14 Jun 2025 500th dokutan 606 275 170ms 22 Oct 2024 501st voytxt 🇨🇿 605 262 12ms 25 Feb 2022 501st dokutan 605 262 10ms 27 Sep 2024 503rd speles 🇺🇦 605 306 1ms 8 Nov 2023 504th GolfingSuccess 🇬🇷 604 215 575ms 15 Jan 2024 505th OllieBoyne 🇬🇧 604 228 13ms 2 Jun 2021 506th Gaddy 🇫🇷 604 301 389ms 18 May 2022 507th violeta-desantis 603 307 2ms 27 Sep 2023 508th NanduBC 602 229 10ms 18 Mar 2021 508th RandGuy 602 229 10ms 7 Sep 2022 508th aksyristos 602 229 9ms 29 Dec 2022 508th codingisgreatbutiamnot 602 229 10ms 14 Aug 2024 508th NotEvenIndian 602 229 10ms 22 Oct 2024 513th initram 602 302 402ms 21 Nov 2021 514th jared-hughes 601 148 35ms 30 Oct 2021 515th arcage 🇯🇵 601 243 1,258ms 6 May 2021 516th emgordon154 600 264 10ms 8 Aug 2024 517th KrausRaus 🇺🇸 600 347 450ms 17 Oct 2022 518th Mabeloid 🇳🇴 599 217 701ms 20 Oct 2025 518th Andrey2001 599 217 577ms 26 Nov 2025 520th gitbedd 🇬🇧 599 230 10ms 10 Jan 2022 520th eshilo-draper 599 230 10ms 1 Aug 2023 520th Ythaenagor 599 230 10ms 5 Aug 2024 523rd msbranicky 599 329 2ms 26 Sep 2023 524th Shanethegamer 🇺🇸 599 337 156ms 5 Feb 2021 525th shen-hong-xin 599 439 66ms 7 Jul 2021 526th mikiymk 596 207 36ms 21 Sep 2023 527th IISResetMe 596 215 283ms 29 Dec 2025 528th CedricGebistorf 596 231 11ms 6 Mar 2022 528th Lv0Sys 🇵🇱 596 231 10ms 2 Dec 2025 530th BBoehm 🇩🇪 596 266 10ms 15 Feb 2021 530th ArmaanAS 596 266 10ms 29 Mar 2021 530th kirjavascript 596 266 10ms 8 Aug 2025 533rd toeppen 596 349 446ms 3 Apr 2023 534th lukechampine 596 356 279ms 20 Apr 2020 535th giacomogallina 594 232 10ms 5 Jun 2019 535th abailey2020 🇺🇸 594 232 9ms 13 Dec 2020 535th Kloppermand 🇩🇰 594 232 11ms 8 Sep 2021 535th Irratix 🇳🇱 594 232 10ms 25 Apr 2022 535th dokutan 594 232 10ms 20 Jun 2024 535th mbittner20 594 232 11ms 1 Jul 2024 541st zakariamouhid 594 267 11ms 10 Jan 2023 542nd albanian-laundromat 593 219 541ms 14 Nov 2025 543rd AlephSquirrel 593 314 7ms 6 Oct 2024 544th error256 593 547 1,430ms 23 Jan 2025 545th celiendonze 🇨🇭 591 233 10ms 25 May 2023 545th HumanoidCPU 591 233 11ms 5 Mar 2025 545th tomh1012 591 233 10ms 21 Nov 2025 548th emgordon154 591 313 3ms 2 Aug 2024 549th RedzGoose 🇦🇺 590 220 586ms 14 Oct 2024 550th Natanaelel 🇸🇪 590 277 121ms 19 May 2022 551st mothcolada 🇺🇸 589 234 10ms 12 Apr 2021 551st za3k 589 234 11ms 15 Oct 2022 551st aalec 589 234 10ms 25 Apr 2024 551st inverseLorentz 🇦🇺 589 234 11ms 9 May 2024 551st jtaxen 589 234 10ms 10 May 2024 556th msbranicky 589 360 290ms 31 Aug 2023 557th dokutan 588 185 41ms 27 Sep 2024 558th c0d3-4-F00d 🇩🇪 587 315 3ms 8 Jan 2025 559th lynn 586 175 2ms 12 Jan 2022 560th amishtal 586 235 10ms 4 Dec 2019 First Prev 481–560 of 1,711 Next Last