The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 25 hours. Why not try and solve them ahead of time?
Number Spiral 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 481st blaztoma 🇱🇹 647 205 42ms 27 Dec 2025 482nd Yewzir 🇧🇪 646 113 1ms 21 Dec 2023 483rd snoozingnewt 🇨🇦 646 137 5ms 16 Sep 2025 484th Andriamanitra 🇫🇮 645 157 78ms 7 hours ago 485th duckyluuk 🇳🇱 644 186 9ms 18 Dec 2024 486th DialFrost 🇸🇬 643 92 89ms 23 Nov 2025 487th DialFrost 🇸🇬 643 95 1,695ms 24 May 2024 488th Alex-x90 🇺🇸 643 120 9ms 15 Sep 2023 488th fourth-bit 643 120 9ms 8 Oct 2024 488th solisolu 643 120 10ms 22 days ago 491st madex 🇩🇪 643 139 1ms 18 Mar 2022 492nd sean-niemann 🇺🇸 640 120 158ms 21 Oct 2025 493rd m-tkach 🇺🇦 640 153 2ms 27 Oct 2022 494th HumanoidCPU 639 174 74ms 29 Aug 2024 495th stefangimmillaro 638 127 9ms 27 Sep 2024 496th betaveros 637 121 9ms 6 Jan 2023 497th tatzyr 🇯🇵 636 111 35ms 15 Feb 2025 498th hemphen 636 160 412ms 6 Aug 2022 499th rucin93 🇵🇱 635 121 152ms 27 Dec 2024 500th Artemis21 🇬🇧 632 122 10ms 10 Jan 2025 500th plcc0 632 122 10ms 25 Mar 2025 502nd MeWhenI 🇻🇦 630 179 448ms 4 Mar 2022 503rd MeWhenI 🇻🇦 629 185 495ms 7 Nov 2025 504th KenanSi 628 48 2ms 24 Feb 2022 505th Yax42 🇫🇷 628 129 9ms 20 Jan 2026 506th Yewzir 🇧🇪 628 162 374ms 30 Dec 2023 507th tobeannouncd 626 158 120ms 10 Jan 2024 508th Waffle3z 626 177 1ms 26 Jan 2022 509th lynn 625 241 6ms 16 Mar 2023 510th DialFrost 🇸🇬 624 117 1ms 21 Dec 2024 511th DialFrost 🇸🇬 623 192 4ms 14 Nov 2023 512th Yewzir 🇧🇪 622 178 101ms 23 Mar 2024 513th ovs-code 🇩🇪 622 242 7ms 16 Mar 2023 514th stefangimmillaro 619 142 40ms 26 Apr 2025 515th bzijlema 🇳🇱 619 208 288ms 30 Jan 2024 516th CaedenHarper 🇨🇦 618 164 82ms 11 Aug 2025 517th alemelis 617 99 1,041ms 3 Apr 2023 518th ahmetdemirag 🇨🇾 617 125 13ms 24 Nov 2024 519th Yewzir 🇧🇪 614 132 10ms 27 Dec 2023 520th Yewzir 🇧🇪 612 126 10ms 27 Dec 2023 520th BREMAUCY 🇫🇷 612 126 9ms 19 Aug 2025 522nd Shanethegamer 🇺🇸 610 162 116ms 17 Oct 2022 523rd blaztoma 🇱🇹 609 65 37ms 27 days ago 524th Maznek 609 133 9ms 3 Jul 2023 525th shinh 608 116 34ms 25 Jun 2022 526th MeWhenI 🇻🇦 608 183 66ms 26 May 2023 527th postie77 606 168 390ms 27 Feb 2023 528th MeWhenI 🇻🇦 605 176 1,329ms 8 Jun 2023 529th MeWhenI 🇻🇦 603 185 392ms 15 Nov 2022 530th KrausRaus 🇺🇸 602 147 5ms 7 Sep 2022 531st snoozingnewt 🇨🇦 598 99 77ms 29 Nov 2025 531st emgordon154 598 99 80ms 14 days ago 533rd sisyphus-ppcg 🇦🇺 598 148 5ms 23 Nov 2022 534th IanUtley 594 169 17ms 2 Apr 2024 535th janbehrens 🇩🇪 594 190 453ms 24 Mar 2022 536th knutae 🇳🇴 593 130 9ms 3 Feb 2022 537th MeWhenI 🇻🇦 592 160 156ms 16 Nov 2022 538th primo-ppcg 🇹🇭 591 197 441ms 16 Mar 2022 539th MeWhenI 🇻🇦 590 160 4ms 23 May 2023 540th cros107 🇦🇺 589 131 10ms 25 Dec 2024 540th andrewjc2000 589 131 15ms 31 Jul 2025 542nd janbehrens 🇩🇪 589 143 14ms 2 Jul 2023 543rd olivermrose 🇺🇸 588 120 35ms 27 Jan 2022 544th madex 🇩🇪 588 126 4ms 10 hours ago 545th MeWhenI 🇻🇦 588 173 416ms 26 Jul 2023 546th Yewzir 🇧🇪 586 161 4ms 14 May 2023 547th Yewzir 🇧🇪 584 125 447ms 4 Feb 2024 547th MeWhenI 🇻🇦 584 125 506ms 13 Jul 2024 549th btjones0 584 132 10ms 16 Mar 2022 549th stertooy 🇧🇪 584 132 10ms 14 Jun 2024 549th qpwoeirut 584 132 10ms 25 Nov 2025 552nd BlankSpruce 584 153 2ms 7 Aug 2024 553rd dmrichwa 🇺🇸 583 139 9ms 4 Oct 2022 554th JRaspass 🇬🇧 583 307 1ms 25 Jan 2022 554th KatieLG 🇬🇧 583 307 2ms 27 Jan 2022 554th DaCuteRaccoon 583 307 1ms 15 May 2022 554th KatieLG-Transpiler 🇬🇧 583 307 1ms 24 Jun 2022 554th vroup 🇩🇰 583 307 1ms 28 Sep 2022 554th retrohun 583 307 1ms 28 Dec 2022 554th theunofficialcoder 583 307 1ms 7 Jan 2024 First Prev 481–560 of 1,821 Next Last
