Supernewton's Logic Puzzles
Welcome to supernewton's logic puzzles! This is a collection of pen-and-paper style puzzles that you can play right in your browser. All puzzles are hand-set by me and have a unique solution that can be reached using logic alone.
How to play
- The specific rules for a puzzle type, along with an example puzzle and solution, are given at the bottom of the page. All of the information you need is given to you; the rest is up to your logic skills.
- In general, use the left mouse button to add markings that contribute to finishing the puzzle, and the right mouse button to add "pencil marks" that might help you keep track of information.
- The puzzle will automatically report when it is finished. If you think you have a complete solution but the puzzle disagrees, click "show errors" and the puzzle will highlight where you've broken a rule.
- The "pencil marks" are tailored for each puzzle type. For example, in shading puzzles, the right mouse button marks cells that are definitely unshaded.
- If you're on mobile or otherwise can't right-click, you can select the "pencil marks" button below the puzzle to access the pencil marks functionality.
- The "freeform pen" tool allows you to make arbitrary markings if the built-in pencil marks are not sufficient for a given puzzle.
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Puzzle List
| # | Date | Type | Theme | Size | Diff. | Solved |
| 132 | 2022-01-01 | Fillomino (Off1) | Happy New Year! | 9x9 | 1 | -- |
| 131 | 2021-05-28 | Cross the Streams | Even Stevens | 10x10 | 3 | -- |
| 130 | 2021-05-26 | Country Road | One out of Two | 10x10 | 3 | -- |
| 129 | 2021-05-24 | Araf | Earth and Sky | 8x8 | 2 | -- |
| 128 | 2021-05-21 | Pento... (borders) | Speed Lines | 10x10 | 3 | -- |
| 127 | 2021-05-19 | LITS | Abstract | 10x10 | 3 | -- |
| 126 | 2021-05-17 | Simple Loop | Diffusion | 11x11 | 1 | -- |
| 125 | 2021-05-14 | Kurotto | Fun Square | 10x10 | 4 | -- |
| 124 | 2021-05-12 | Kurotto | Diamonds | 10x10 | 3 | -- |
| 123 | 2021-05-10 | Kurotto | Antisymmetry | 10x10 | 2 | -- |
| 122 | 2021-05-07 | Shikaku | Convergence | 13x13 | 2 | -- |
| 121 | 2021-05-05 | Shikaku | Offset Rows | 10x10 | 2 | -- |
| 120 | 2021-05-03 | Shikaku | Diagonals | 10x10 | 1 | -- |
| 119 | 2021-04-30 | Pento... (borders) | Horizontal | 10x10 | 3 | -- |
| 118 | 2021-04-28 | Yajisan-Kazusan | Patterned | 10x10 | 3 | -- |
| 117 | 2021-04-26 | Tapa | Skew Grid | 10x10 | 2 | -- |
| 116 | 2021-04-23 | Nurikabe | Chain | 10x10 | 3 | -- |
| 115 | 2021-04-21 | Cave | Clue Symmetry | 10x10 | 2 | -- |
| 114 | 2021-04-19 | Simple Loop | Five L | 12x12 | 1 | -- |
| 113 | 2021-04-16 | Nurikabe | Scatterbrained | 10x10 | 3 | -- |
| 112 | 2021-04-14 | Pentominous | VVVVVV | 10x10 | 3 | -- |
| 111 | 2021-04-12 | Kurotto | Big Shot | 10x10 | 2 | -- |
| 110 | 2021-04-09 | LITS | ?????? | 12x12 | 5 | -- |
| 109 | 2021-04-07 | Cave | Snakey | 10x10 | 3 | -- |
| 108 | 2021-04-05 | Tapa (Borders) | Snakey | 10x10 | 3 | -- |
| 107 | 2021-04-02 | Nurimaze | Passage | 12x12 | 4 | -- |
| 106 | 2021-03-31 | Norinori | Logical | 10x10 | 2 | -- |
| 105 | 2021-03-29 | Tapa | The Big Easy | 10x10 | 1 | -- |
| 104 | 2021-03-26 | Inverse LITS | Jumble | 10x10 | 5 | -- |
| 103 | 2021-03-24 | Inverse LITS | Stretch | 10x10 | 3 | -- |
| 102 | 2021-03-22 | Inverse LITS | Escape Route | 10x10 | 2 | -- |
| 101 | 2021-03-19 | Country Road | Logical | 10x10 | 4 | -- |
| 100 | 2021-03-17 | LITS | Corner Brackets | 10x10 | 3 | -- |
| 99 | 2021-03-15 | Doubleback | Long & Short | 10x10 | 2 | -- |
| 98 | 2021-03-12 | Yajisan-Kazusan | All Twos | 10x10 | 4 | -- |
| 97 | 2021-03-10 | Cave | Mini Vees | 10x10 | 3 | -- |
| 96 | 2021-03-08 | Nurimaze | Framed | 10x10 | 2 | -- |
| 95 | 2021-03-05 | Fillomino | Avoidance | 9x9 | 3 | -- |
| 94 | 2021-03-03 | Fillomino | Tight | 9x9 | 3 | -- |
| 93 | 2021-03-01 | Fillomino | Hidden | 9x9 | 3 | -- |
| 92 | 2021-02-26 | Cross the Streams | Repeated Digits | 10x10 | 3 | -- |
| 91 | 2021-02-24 | Yajisan-Kazusan | Liar, Liar | 10x10 | 2 | -- |
| 90 | 2021-02-22 | Norinori | Diagonal Chain | 10x10 | 1 | -- |
| 89 | 2021-02-19 | Nurikabe | A Knight's Walk | 10x10 | 3 | -- |
| 88 | 2021-02-17 | Country Road | Just One Clue | 10x10 | 2 | -- |
| 87 | 2021-02-15 | Tapa | 7-7-7 | 10x10 | 2 | -- |
| 86 | 2021-02-12 | Cross the Streams | ??????? | 10x10 | 4 | -- |
| 85 | 2021-02-10 | Pento... (borders) | _ Marks the Spot | 10x10 | 2 | -- |
| 84 | 2021-02-08 | Simple Loop | Porous Barrier | 11x11 | 1 | -- |
| 83 | 2021-02-05 | Yajisan-Kazusan | Center Blob | 10x10 | 3 | -- |
| 82 | 2021-02-03 | Doubleback | Tee Up | 10x10 | 3 | -- |
| 81 | 2021-02-01 | Cave | Spread Out | 10x10 | 1 | -- |
| 80 | 2021-01-29 | Cross the Streams | Count to Six | 10x10 | 4 | -- |
| 79 | 2021-01-27 | Cross the Streams | Two and Three | 10x10 | 4 | -- |
| 78 | 2021-01-25 | Cross the Streams | Clue Symmetry | 10x10 | 2 | -- |
| 77 | 2021-01-22 | Fillomino (Cipher) | Diagonal | 10x10 | 5 | -- |
| 76 | 2021-01-20 | Tapa | One Five | 10x10 | 3 | -- |
| 75 | 2021-01-18 | Slalom | Unlabeled | 10x10 | 1 | -- |
| 74 | 2021-01-15 | Fillomino | Outsiders | 10x10 | 3 | -- |
| 73 | 2021-01-13 | Cave | Ringaling | 10x10 | 3 | -- |
| 72 | 2021-01-11 | Detour | Binary | 8x8 | 1 | -- |
| 71 | 2021-01-08 | Cross the Streams | Only Sixes | 10x10 | 3 | -- |
| 70 | 2021-01-06 | LITS | Strata | 10x10 | 3 | -- |
| 69 | 2021-01-04 | LITS | Tight Fit | 10x10 | 2 | -- |
| 68 | 2021-01-01 | Tapa (Uniq. Areas) | All of 'Em | 10x10 | 5 | -- |
| 67 | 2020-12-30 | Fillomino (Off1) | Concentric | 9x9 | 4 | -- |
| 66 | 2020-12-28 | Shikaku | Crosshair | 10x10 | 1 | -- |
| 65 | 2020-12-25 | Pentominous | Formation | 10x10 | 4 | -- |
| 64 | 2020-12-23 | Pentominous | Tetrominoes | 10x10 | 3 | -- |
| 63 | 2020-12-21 | Pentominous | T-Spin | 10x10 | 1 | -- |
| 62 | 2020-12-18 | Nurikabe | Four vs Three | 10x10 | 4 | -- |
| 61 | 2020-12-16 | Peno... (borders) | Verticality | 10x10 | 2 | -- |
| 60 | 2020-12-14 | Fillomino | Domino Wars | 8x8 | 1 | -- |
| 59 | 2020-12-11 | Nurikabe (Sum) | Empty Center | 10x10 | 5 | -- |
| 58 | 2020-12-09 | Nurikabe | Top Heavy | 10x10 | 3 | -- |
| 57 | 2020-12-07 | Nurikabe | Touching Twins | 10x10 | 2 | -- |
| 56 | 2020-12-04 | Tapa | Singles vs Pairs | 10x10 | 3 | -- |
| 55 | 2020-12-02 | Country Road | Three Plus Three | 10x10 | 2 | -- |
| 54 | 2020-11-30 | Slalom | Verticality | 10x10 | 2 | -- |
| 53 | 2020-11-27 | Kurotto | Pairs | 10x10 | 4 | -- |
| 52 | 2020-11-25 | Kurotto | Target Locked | 10x10 | 4 | -- |
| 51 | 2020-11-23 | Kurotto | Orderly | 10x10 | 2 | -- |
| 50 | 2020-11-20 | Pento... (borders) | Propagation | 10x10 | 3 | -- |
| 49 | 2020-11-18 | Fillomino | Count Around | 9x9 | 3 | -- |
| 48 | 2020-11-16 | Araf | Thirteens | 8x8 | 2 | -- |
| 47 | 2020-11-13 | Double LITS | Opposed Center | 11x11 | 5 | -- |
| 46 | 2020-11-11 | LITS | Set Corners | 10x10 | 4 | -- |
| 45 | 2020-11-09 | LITS | Twists & Turns | 10x10 | 3 | -- |
| 44 | 2020-11-06 | Pentominous | Symmetry | 10x10 | 5 | -- |
| 43 | 2020-11-04 | Araf | Four Square | 8x8 | 4 | -- |
| 42 | 2020-11-02 | Araf | Radiant | 8x8 | 2 | -- |
| 41 | 2020-10-30 | Nanro | Cross | 9x9 | 3 | -- |
| 40 | 2020-10-28 | Detour | Full Twist | 10x10 | 3 | -- |
| 39 | 2020-10-26 | Shikaku | Small Evens | 10x10 | 2 | -- |
| 38 | 2020-10-23 | Doubleback | Packed | 10x10 | 4 | -- |
| 37 | 2020-10-21 | Detour | Only Ones | 10x10 | 3 | -- |
| 36 | 2020-10-19 | Simple Loop | Singles | 10x10 | 1 | -- |
| 35 | 2020-10-16 | Fillomino | #Fillomino | 10x10 | 4 | -- |
| 34 | 2020-10-14 | Japanese Sums | Count up | 7x7 | 3 | -- |
| 33 | 2020-10-12 | Inverse LITS | Blocky | 10x10 | 2 | -- |
| 32 | 2020-10-09 | Country Road | Hexominoes | 12x12 | 5 | -- |
| 31 | 2020-10-07 | Country Road | Side Halls | 10x10 | 4 | -- |
| 30 | 2020-10-05 | Country Road | Abstract Art | 10x10 | 2 | -- |
| 29 | 2020-10-02 | Kurotto | Connection | 10x10 | 3 | -- |
| 28 | 2020-09-30 | Pentominous | Odd One Out | 10x10 | 2 | -- |
| 27 | 2020-09-28 | Simple Loop | Unthemed | 10x10 | 1 | -- |
| 26 | 2020-09-25 | Tapa (Uniq. Areas) | Crystal | 10x10 | 4 | -- |
| 25 | 2020-09-23 | Tapa (Borders) | Trench | 10x10 | 3 | -- |
| 24 | 2020-09-21 | Tapa | Single Digits | 10x10 | 2 | -- |
| 23 | 2020-09-18 | Pentominous | Pairs | 10x10 | 4 | -- |
| 22 | 2020-09-16 | Slalom | 2-4-6-8 | 11x11 | 3 | -- |
| 21 | 2020-09-14 | Fillomino | X Factor | 8x8 | 2 | -- |
| 20 | 2020-09-11 | Country Road | The Moat | 10x10 | 4 | -- |
| 19 | 2020-09-09 | Nanro | Divided | 10x10 | 3 | -- |
| 18 | 2020-09-07 | Tapa | Horizontal | 10x10 | 2 | -- |
| 17 | 2020-09-04 | Nurimaze | Tight Middle | 11x11 | 5 | -- |
| 16 | 2020-09-02 | Nurimaze | Opposition | 10x10 | 3 | -- |
| 15 | 2020-08-31 | Nurimaze | Central | 10x10 | 2 | -- |
| 14 | 2020-08-28 | Pento... (borders) | Eye Test | 10x10 | 4 | -- |
| 13 | 2020-08-26 | Fillomino | Unlucky 13 | 9x9 | 3 | -- |
| 12 | 2020-08-24 | Shikaku | Big Clash | 10x10 | 1 | -- |
| 11 | 2020-08-22 | Inverse LITS | Right Angles | 10x10 | 4 | -- |
| 10 | 2020-08-21 | LITS | Control Rods | 12x12 | 5 | -- |
| 9 | 2020-08-19 | LITS | Framed | 10x10 | 3 | -- |
| 8 | 2020-08-17 | LITS | L Museum | 10x10 | 1 | -- |
| 7 | 2020-08-14 | Pentominous | Pairs and Quads | 10x10 | 5 | -- |
| 6 | 2020-08-12 | Slalom | City Grid, Sort of | 11x11 | 3 | -- |
| 5 | 2020-08-11 | Tapa | One of a Kind | 10x10 | 2 | -- |
| 4 | 2020-08-07 | Country Road | Divided Squares | 12x12 | 5 | -- |
| 3 | 2020-08-05 | Kurotto | Small Rings | 10x10 | 4 | -- |
| 2 | 2020-08-03 | LITS | Double F | 10x10 | 3 | -- |
| 1 | 2020-08-01 | Simple Loop | Double Cross | 10x10 | 1 | -- |