Ctrl+P again to print, arrows/tab to navigate results, enter to confirm

    The Connect Four hole will go live in approximately . Why not try and solve it ahead of time?

    Recent Solutions

    Hole Golfer Bytes Time Submitted
    Number Spiral JayXon 💎 120
    Number Spiral edsrzf 🥈 122
    Reverse Polish Notation Sciman101 189
    Tongue-twisters Sciman101 447
    Leap Years sean-niemann 45
    Topological Sort edsrzf 🥈 138
    Calendar edsrzf 💎 220
    Proximity Grid edsrzf 💎 175
    Abundant Numbers (Long) edsrzf 75
    Fibonacci Dominoscompute 🥇 43
    Snake Shanethegamer 216
    Musical Chords edsrzf 💎 153
    Alphabetic Numbers edsrzf 💎 196
    ISBN Sciman101 111
    Tutorial zgialor-lab 67
    Alphabetic Numbers CaedenHarper 🥉 3,903
    Fizz Buzz zgialor-lab 81
    Leap Years Steffan153 🥇 44
    Prime Numbers madex 86
    brainfuck KasperKivimaeki 371
    Fibonacci zgialor-lab 🥇 43
    Quine zgialor-lab 🥇 45
    Divisors scpchicken 🥇 68
    Tongue-twisters prestosilver 531
    Abundant Numbers HumanoidCPU 87
    Abundant Numbers (Long) HumanoidCPU 87
    Leap Years denkyuu1 63
    Tongue-twisters edsrzf 327
    Abundant Numbers darkI33T 71
    Collatz Steffan153 🥉 74
    24 Game edsrzf 🥈 308
    Day of Week jared-hughes 219
    Niven Numbers albanian-laundromat 🥇 46
    Sierpiński Triangle Steffan153 🥈 70
    Ulam Sequence HumanoidCPU 1,101
    Alphabetic Numbers KatieLG 4,903
    Alphabetic Numbers dokutan 🥈 1,957
    Ulam Sequence Shanethegamer 1,101
    Ulam Sequence pnd5 126
    Prime Numbers Lydxn 🥇 41
    Pernicious Numbers Lydxn 🥇 41
    Niven Numbers Lydxn 🥇 46
    Divisors Lydxn 🥇 68
    Collatz Lydxn 🥇 73
    Pascal’s Triangle Lydxn 🥇 71
    Factorial Factorisation adriweb 868
    Van Eck Sequence adriweb 2,563
    Trinomial Triangle adriweb 2,075
    Taxicab Numbers adriweb 4,168
    √2 duckyluuk 181
    Taxicab Numbers dokutan 172
    φ duckyluuk 181
    Nim scpchicken 219
    Emirp Numbers (Long) Steffan153 93
    Van Eck Sequence snoozingnewt 🥇 53
    Prime Numbers (Long) snoozingnewt 🥇 64
    Niven Numbers snoozingnewt 🥇 46
    Niven Numbers (Long) Steffan153 🥇 59
    Niven Numbers (Long) edsrzf 62
    Niven Numbers (Long) HumanoidCPU 87
    Niven Numbers HumanoidCPU 87
    Taxicab Numbers aksyristos 180
    Gray Code Encoder GrayJoKing 🥉 76
    Gray Code Encoder GolfingSuccess 💎 74
    Taxicab Numbers Steffan153 🥇 80
    Taxicab Numbers edsrzf 🥇 80
    Intersection Shanethegamer 164
    24 Game madeforlosers 13,799
    Leap Years NacMacFigl 57
    Taxicab Numbers madex 161
    Nim edsrzf 112
    Fibonacci NacMacFigl 🥇 43
    Taxicab Numbers Matter1024 🥉 144
    Tutorial NacMacFigl 75
    Fizz Buzz NacMacFigl 87
    Arithmetic Numbers NacMacFigl 96
    Taxicab Numbers CaedenHarper 4,168
    99 Bottles of Beer NacMacFigl 349
    12 Days of Christmas NacMacFigl 541
    Leyland Numbers edsrzf 98
    Nim Shanethegamer 117
    N Queens edsrzf 💎 121
    Taxicab Numbers HumanoidCPU 213
    Seven Segment MeWhenI 178
    Maze MeWhenI 233
    Ordinal Numbers MeWhenI 87
    Seven Segment JayXon 💎 124
    Abundant Numbers (Long) Steffan153 🥇 70
    Catalan Numbers Steffan153 🥈 163
    Morse Decoder Steffan153 💎 156
    Morse Decoder edsrzf 🥉 200
    Pangram Grep edsrzf 91
    Pangram Grep jipsong 98
    Collatz jipsong 🥉 74
    Kolakoski Sequence madeforlosers 2,006
    Dragon Curve HumanoidCPU 10,281
    Pernicious Numbers (Long) Steffan153 🥇 55
    Dragon Curve Shanethegamer 10,281
    Evil Numbers madeforlosers 100
    Flags bitsandbeyond 705