The Tower of Hanoi hole will go live in approximately 3 hours. Why not try and solve it ahead of time?
Rijndael S-box in C 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi 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 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 1st AdrienHache 🇫🇷 1,000 77 2ms 3 Jun 2024 2nd Alex-x90 🇺🇸 875 88 2ms 1 Sep 2023 3rd nwellnhof 🇩🇪 856 90 2ms 9 Sep 2023 3rd prplz 🇦🇺 856 90 2ms 27 Jan 2025 5th saito-ta 🇯🇵 846 91 2ms 26 Sep 2025 6th inventshah 837 92 2ms 3 Sep 2023 6th KasperKivimaeki 🇫🇮 837 92 2ms 28 Oct 2025 8th MostParsingVex 819 94 2ms 20 Jan 2025 9th CatsAreFluffy 802 96 2ms 16 Feb 2024 10th emgordon154 733 105 2ms 27 Sep 2025 11th SirBogman 🇺🇸 664 116 2ms 11 Jan 2024 12th weliveinhell 🇭🇹 647 119 2ms 16 Jan 2024 12th error256 647 119 2ms 27 May 2024 14th ovs-code 🇩🇪 626 123 2ms 18 Apr 2025 15th JohandeRuiter 🇳🇱 490 157 2ms 29 Sep 2023 16th GolfingSuccess 🇬🇷 461 167 2ms 1 Sep 2023 17th ZakkkkAttackkkk 🇵🇭 435 177 2ms 24 Feb 2025 18th jacobly0 🇺🇸 412 187 2ms 1 Sep 2023 19th jared-hughes 397 194 2ms 7 Sep 2023 20th nyoshe 391 197 2ms 19 Sep 2023 21st elgan65536 372 207 2ms 7 Apr 2024 21st madex 🇩🇪 372 207 3ms 3 Jul 2024 21st luuumine 🇫🇷 372 207 2ms 4 days ago 24th Natanaelel 🇸🇪 363 212 2ms 4 Sep 2023 24th iczelia 🇩🇪 363 212 2ms 17 Oct 2025 26th CaedenHarper 🇨🇦 358 215 4ms 30 Jan 2025 27th logvp 353 218 2ms 1 Feb 2024 28th Yewzir 🇧🇪 352 219 2ms 7 Nov 2023 29th janbehrens 🇩🇪 347 222 2ms 30 Dec 2023 30th rifatx 345 223 2ms 16 Jul 2024 31st snoozingnewt 🇺🇸 344 224 2ms 26 days ago 32nd codereport 🇨🇦 341 226 2ms 18 Apr 2025 33rd gastropner 339 227 2ms 17 Jul 2025 34th Mabeloid 🇳🇴 332 232 2ms 15 Oct 2025 35th bac0id 326 236 2ms 8 Jan 2025 36th trinityy-7 325 237 2ms 10 Oct 2023 37th peachey2k2 321 240 2ms 8 days ago 38th c0d3-4-F00d 🇩🇪 320 241 2ms 4 Dec 2023 39th helbling 🇨🇭 318 242 2ms 25 Jul 2024 40th Martymoose98 316 244 2ms 30 May 2025 41st gigaprofisi 🇺🇸 303 254 3ms 16 Jul 2025 42nd kallmi28 🇨🇿 298 258 2ms 8 Nov 2023 43rd yzhs 🇩🇪 296 260 2ms 24 Mar 2024 44th roguh 🇬🇹 287 268 2ms 23 Jan 2024 45th annaproxy 285 270 2ms 1 Sep 2023 46th eiburns 270 285 2ms 6 Nov 2023 47th Stanbroek 265 291 2ms 18 Sep 2023 48th BREMAUCY 🇫🇷 234 329 2ms 1 Nov 2025 49th Ripick 224 343 2ms 22 Oct 2025 50th TheZwierzLF 🇵🇱 223 346 2ms 5 days ago 51st MarcMush 🇫🇷 214 360 2ms 7 Jan 2024 52nd ridingqwerty 🇺🇸 197 391 2ms 21 Feb 2024 53rd Maashau 130 593 2ms 5 days ago 54th mathisfun271 129 595 2ms 16 Feb 2024 55th HumanoidCPU 127 606 2ms 18 days ago 56th msbranicky 124 619 2ms 8 Sep 2023 57th jtaxen 114 676 2ms 28 Apr 2024 58th MeWhenI 🇻🇦 98 784 2ms 1 Sep 2023 58th Shanethegamer 🇺🇸 98 784 2ms 13 Sep 2023 58th dokutan 98 784 2ms 4 Apr 2024 58th heanyang1 98 784 2ms 23 May 2025 58th Upload-and-View 🇺🇦 98 784 2ms 26 Aug 2025 63rd KatieLG-Transpiler 🇬🇧 96 804 2ms 2 Sep 2023 64th KatieLG 🇬🇧 96 806 2ms 2 Sep 2023 1–64 of 64