The Tower of Hanoi hole will go live in approximately 2 hours. Why not try and solve it ahead of time?
λ 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 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 Chars Time Submitted 451st stefangimmillaro 518 413 431ms 7 Oct 2025 452nd lynn 517 195 529ms 20 Oct 2023 453rd CaedenHarper 🇨🇦 517 436 288ms 6 days ago 454th dokutan 516 703 11ms 28 Jun 2025 455th itsh01 514 242 23ms 21 Nov 2022 455th scpchicken 🇵🇼 514 242 104ms 22 Feb 2023 457th inventshah 511 197 46ms 16 Jun 2022 458th MeWhenI 🇻🇦 507 315 8ms 9 May 2024 459th canissimia 🇦🇶 507 396 1,187ms 27 May 2023 460th DialFrost 🇸🇬 505 246 23ms 8 Jan 2023 461st TFeld00 🇩🇰 504 200 9ms 3 Jun 2019 461st prplz 🇦🇺 504 200 11ms 7 Jan 2020 461st m-tkach 🇺🇦 504 200 9ms 14 Jun 2022 461st Yewzir 🇧🇪 504 200 9ms 22 Dec 2023 465th alemelis 501 179 439ms 5 Oct 2024 466th jessegyger 501 414 5ms 31 Oct 2022 467th o0lit3 🇺🇸 498 211 216ms 19 Oct 2020 468th bricknellj 494 204 276ms 10 Jun 2024 468th ryyyn 🇺🇸 494 204 50ms 16 days ago 470th Jacob385 493 434 381ms 20 days ago 471st Yewzir 🇧🇪 491 200 372ms 15 Jan 2024 472nd mathisfun271 491 205 4,962ms 13 Feb 2024 473rd MeWhenI 🇻🇦 490 237 987ms 11 May 2023 474th Shanethegamer 🇺🇸 490 362 414ms 24 May 2022 475th olivermrose 🇺🇸 489 177 71ms 7 Oct 2021 476th MeWhenI 🇻🇦 489 201 797ms 17 Jan 2024 477th zacjl 489 206 227ms 31 Dec 2024 478th emgordon154 489 461 356ms 18 Jan 2025 479th pandapawskat 488 255 24ms 28 Sep 2021 480th Mabeloid 🇳🇴 487 207 9ms 5 Sep 2024 481st MeWhenI 🇻🇦 487 216 440ms 14 Jul 2024 482nd acotis 486 444 1,622ms 26 Jun 2025 483rd CaedenHarper 🇨🇦 484 208 364ms 26 Sep 2025 484th adriweb 🇫🇷 484 418 199ms 21 Aug 2023 485th albanian-laundromat 483 751 12ms 17 Oct 2025 486th CodyMiner 482 209 106ms 26 Nov 2021 487th eranws 482 258 29ms 23 Oct 2022 488th thisishowmymindworks 🇳🇴 480 210 9ms 24 Jul 2020 488th vezzick 480 210 9ms 6 Mar 2021 488th dokutan 480 210 9ms 23 Jul 2025 491st tomtheisen 🇺🇸 477 211 9ms 2 Dec 2019 492nd roguh 🇬🇹 477 359 102ms 27 Jan 2024 493rd jared-hughes 475 182 262ms 11 Sep 2022 493rd stefangimmillaro 475 182 158ms 26 Dec 2024 495th KasperKivimaeki 🇫🇮 475 262 23ms 27 days ago 496th Shanethegamer 🇺🇸 475 683 612ms 30 Apr 2025 497th Mabeloid 🇳🇴 474 207 448ms 18 Sep 2024 498th iznax 474 374 346ms 21 Nov 2021 499th leon-w 471 214 9ms 3 Jan 2019 499th blaztoma 🇱🇹 471 214 37ms 3 Oct 2025 501st Natanaelel 🇸🇪 470 184 168ms 26 Dec 2024 502nd Shanethegamer 🇺🇸 468 186 186ms 24 Mar 2022 503rd dokutan 468 210 385ms 23 Jul 2025 504th sean-niemann 🇺🇸 468 401 3ms 4 Jul 2025 505th benwilliamgraham 466 216 9ms 27 Jan 2019 505th jiaminglimjm 🇲🇾 466 216 9ms 9 Jan 2021 507th argusdusty 🇺🇸 462 218 3,386ms 31 Dec 2020 507th stefangimmillaro 462 218 46ms 1 Aug 2023 509th dokutan 462 465 3ms 27 Sep 2024 510th hiddicop 🇸🇪 460 219 9ms 30 Jan 2021 511th yzhs 🇩🇪 460 363 1,504ms 26 Jul 2021 512th janbehrens 🇩🇪 458 196 587ms 7 Nov 2021 513th marcin7Cd 456 221 3,474ms 17 Dec 2020 514th AlephSquirrel 455 373 1,755ms 21 Mar 2025 515th elisherer 🇮🇱 453 192 85ms 19 Apr 2019 516th annaproxy 450 192 270ms 28 Aug 2022 517th yzhs 🇩🇪 449 200 520ms 21 Jun 2022 518th daisy-lau 449 277 8ms 3 Jul 2020 519th plcc0 448 225 49ms 30 Mar 2025 520th Shanethegamer 🇺🇸 445 261 929ms 5 Apr 2023 521st tomh1012 445 398 428ms 11 Sep 2025 522nd madex 🇩🇪 444 227 56ms 26 Jul 2025 523rd nwellnhof 🇩🇪 444 667 23ms 19 Nov 2022 524th qpwoeirut 442 228 4,084ms 11 Oct 2025 525th inventshah 440 673 27ms 18 Nov 2022 First Prev 451–525 of 2,390 Next Last
