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The puzzle is played on an N×N grid where the objective is to fill each cell with a height from...","score":8.1,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T19:01:21+00:00"},{"rank":31,"name":"The Hardest Logic Puzzle Ever","url":"https://lunoo.com/item/the-hardest-logic-puzzle-ever","image":"https://lunoo.com/storage/images/generated/t/317031.webp?v=1784488391","description":"The Hardest Logic Puzzle Ever is a three-god problem formulated by philosopher George Boolos in 1996, requiring identification of gods who answer in an unknown language with yes/no responses meaning True, False, or Rando...","score":8.1,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T19:13:11+00:00"},{"rank":32,"name":"SEND+MORE=MONEY","url":"https://lunoo.com/item/sendmoremoney","image":"https://lunoo.com/storage/images/generated/s/317044.webp?v=1784488391","description":"SEND + MORE = MONEY is a classic cryptarithmetic mathematical puzzle created by Henry Dudeney, first published in the July 1924 issue of The Strand Magazine. 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Solvers place digits from 1 to 9 into a grid, treating each number as a building of that specific heig...","score":8,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T18:40:02+00:00"},{"rank":35,"name":"Irregular Sudoku","url":"https://lunoo.com/item/irregular-sudoku","image":"https://lunoo.com/storage/images/wikipedia/i/316872.webp?v=1784486402","description":"Irregular Sudoku, frequently called Jigsaw Sudoku, is a logic puzzle variant that modifies the structural regions of standard Sudoku. Instead of the traditional nine 3x3 boxes, the grid is partitioned into irregularly sh...","score":8,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T18:40:02+00:00"},{"rank":36,"name":"Calcudoku","url":"https://lunoo.com/item/calcudoku","image":"https://lunoo.com/storage/images/wikipedia/c/316997.webp?v=1784486402","description":"Calcudoku is a grid-based arithmetic puzzle that follows a format similar to KenKen. Solvers fill a square grid with digits, ensuring that no number repeats within any row or column. The grid is divided into outlined blo...","score":8,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T18:40:02+00:00"},{"rank":37,"name":"Shakashaka","url":"https://lunoo.com/item/shakashaka","image":"https://lunoo.com/storage/images/wikipedia/s/316925.webp?v=1784677530","description":"Shakashaka is a logic puzzle published by Nikoli in which solvers place right-angled triangles in white grid cells. Each triangle occupies half of its cell and points in one of four orientations. The remaining unshaded w...","score":8,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-21T23:45:30+00:00"},{"rank":38,"name":"Ripple Effect","url":"https://lunoo.com/item/ripple-effect","image":"https://lunoo.com/storage/images/wikipedia/r/316929.webp?v=1784747159","description":"Ripple Effect, also known as Hakyuu, is a number-placement logic puzzle published by Nikoli. The grid is divided into irregularly shaped rooms, and each room of size N must contain the integers 1 through N. Identical num...","score":7.9,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-22T19:05:59+00:00"},{"rank":39,"name":"Wolf, Goat and Cabbage","url":"https://lunoo.com/item/wolf-goat-and-cabbage","image":"https://lunoo.com/storage/images/wikipedia/w/317025.webp?v=1784488532","description":"The Wolf, Goat and Cabbage problem is a river-crossing logic puzzle dating to at least the 8th century, appearing in Alcuin of York's Propositiones ad Acuendos Juvenes, requiring safe transport of incompatible cargo.","score":7.9,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T19:15:32+00:00"},{"rank":40,"name":"Muddy Children Puzzle","url":"https://lunoo.com/item/muddy-children-puzzle","image":"https://lunoo.com/storage/images/wikipedia/m/317032.webp?v=1784488532","description":"The Muddy Children Puzzle is a classic problem in epistemic logic that illustrates the concepts of common knowledge and reasoning about others' knowledge. In the standard formulation, a group of children is told that at...","score":7.9,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T19:15:32+00:00"},{"rank":41,"name":"Kuromasu","url":"https://lunoo.com/item/kuromasu","image":"https://lunoo.com/storage/images/wikipedia/k/316955.webp?v=1784486608","description":"Kuromasu is a shading logic puzzle published by Nikoli. Solvers mark cells black or leave them white based on numbered clues in circles that indicate how many white cells are visible from that position across the four or...","score":7.9,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T18:43:28+00:00"},{"rank":42,"name":"Little Killer Sudoku","url":"https://lunoo.com/item/little-killer-sudoku","image":"https://lunoo.com/storage/images/generated/l/316896.webp?v=1784486609","description":"Little Killer Sudoku is a Sudoku variant in which clues placed outside the grid indicate the sum of digits along specified diagonals. Unlike standard Killer Sudoku, where cage sums constrain grouped cells, Little Killer...","score":7.9,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T18:43:29+00:00"},{"rank":43,"name":"Suguru","url":"https://lunoo.com/item/suguru","image":"https://lunoo.com/storage/images/wikipedia/s/316998.webp?v=1784486609","description":"Suguru, also called Tectonics, is a Japanese number puzzle published by Nikoli in which each polyomino region of n cells is filled with the integers 1 through n, and no two equal numbers may touch, even diagonally.","score":7.9,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T18:43:29+00:00"},{"rank":44,"name":"Galaxies","url":"https://lunoo.com/item/galaxies","image":"https://lunoo.com/storage/images/wikipedia/g/316933.webp?v=1784615569","description":"Galaxies, also known as Tentai Show, is a logic puzzle published by Japanese publisher Nikoli. The solver is given a rectangular grid containing dots, and the objective is to partition the grid into regions such that eac...","score":7.8,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-21T06:32:49+00:00"},{"rank":45,"name":"Sandwich Sudoku","url":"https://lunoo.com/item/sandwich-sudoku","image":"https://lunoo.com/storage/images/wikipedia/s/316861.webp?v=1784487008","description":"Sandwich Sudoku is a Sudoku variant in which additional clues placed outside the grid indicate the sum of the digits positioned between the 1 and the 9 in each row and column. The name derives from the concept that the i...","score":7.8,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T18:50:08+00:00"},{"rank":46,"name":"Cave","url":"https://lunoo.com/item/cave","image":"https://lunoo.com/storage/images/generated/c/316994.webp?v=1784488871","description":"Cave, also known as Corral, is a logic puzzle in which the solver shades cells to form a single enclosed cave so that every numbered white cell can see exactly that many white cells in its row and column.","score":7.8,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T19:21:11+00:00"},{"rank":47,"name":"Tents Puzzle","url":"https://lunoo.com/item/tents-puzzle","image":"https://lunoo.com/storage/images/wikipedia/t/317015.webp?v=1784494118","description":"The Tents Puzzle, also known as 'Tents and Trees,' is a binary-placement logic puzzle played on a rectangular grid. The solver is given a set of trees occupying certain cells and must place exactly one tent orthogonally...","score":7.8,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T20:48:38+00:00"},{"rank":48,"name":"Magic Square","url":"https://lunoo.com/item/magic-square","image":"https://lunoo.com/storage/images/generated/m/317020.webp?v=1784502372","description":"A magic square is an arrangement of distinct integers in a square grid where every row, column, and main diagonal sum to the same constant, with the earliest known example appearing in Chinese literature as the Lo Shu ar...","score":7.7,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T23:06:12+00:00"},{"rank":49,"name":"Bulls and Cows","url":"https://lunoo.com/item/bulls-and-cows","image":"https://lunoo.com/storage/images/wikipedia/b/317034.webp?v=1784503675","description":"Bulls and Cows is a classic code-breaking logic game in which one player thinks of a secret, usually four-digit, number and the other tries to guess it. After each guess, the first player provides feedback: a \"bull\" indi...","score":7.7,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-19T23:27:55+00:00"},{"rank":50,"name":"Between Lines Sudoku","url":"https://lunoo.com/item/between-lines-sudoku","image":"https://lunoo.com/storage/images/wikipedia/b/316868.webp?v=1784510252","description":"Between Lines Sudoku is a logic puzzle variant designed for enthusiasts of constraint-based grid deduction. In this format, digits are placed along line segments that connect two circled endpoint cells. The numerical val...","score":7.6,"score_scale":"0-10","comparison_count":0,"ranking_confidence":{"level":"low","label":"Provisional","text":"Needs more checks"},"category":"Logic Puzzle","key_tag":"logic-puzzle","last_item_update":"2026-07-20T01:17:32+00:00"}]}