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https://puzzling.stackexchange.com/questions/137765/7-wide-1-bag-perfect-clear
no computers - 7 Wide 1 Bag Perfect Clear - Puzzling Stack Exchange
Two days ago, I was playing Tetris with a friend. We played a custom game of 7 wide Tetris against each other, and I managed to Perfect Clear after he sent me...
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https://puzzling.stackexchange.com/questions/137790/sangaku-triangle-puzzle-why-i-am-getting-the-wrong-answer
mathematics - Sangaku Triangle Puzzle - why I am getting the wrong answer? - Puzzling Stack Exchange
Last night I was looking through Can You Solve My Problems by Alex Bellos and came across this teaser (problem 36): The two smaller circles inside the square...
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https://puzzling.stackexchange.com/questions/137740/million-to-collatz-challenge
mathematics - Million-to-Collatz Challenge! - Puzzling Stack Exchange
The goal is to find the smallest number you can that would take exactly 1,000,000 steps to get to 1 under the standard Collatz procedure with no skips i.e....
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https://puzzling.stackexchange.com/questions/47291/putting-up-the-lights-two
mathematics - Putting up the lights two - Puzzling Stack Exchange
I hope you are familiar with this. Basically Each strand of 20 lights is wired like a 5x4 grid, and each bulb can be either blue, red, purple, or green....
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https://puzzling.stackexchange.com/questions/137691/height-of-a-corner-of-a-partially-folded-sheet-of-paper
mathematics - Height of a corner of a partially folded sheet of paper - Puzzling Stack Exchange
This puzzle has an unintended solution (see the accepted answer) that I overlooked. See the latest version that avoids this unintended answer. A sheet of paper...
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https://puzzling.stackexchange.com/questions/130398/lottery-6-out-of-49
mathematics - Lottery 6 out of 49 - Puzzling Stack Exchange
Number lottery is a game to bet on a certain subset out of a set of numbers. Typically, it's about guessing 5 to 10 numbers within a range of 1 to 35 or up to...
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https://puzzling.stackexchange.com/questions/137712/two-people-from-different-countries-using-different-currencies
word - Two people from different countries using different currencies... - Puzzling Stack Exchange
...but what do they share in common? The answer is 10 letters long.
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https://puzzling.stackexchange.com/questions/137729/anita-and-bose-play-a-lights-out-variant-on-a-chessboard
mathematics - Anita and Bose play a Lights-out variant on a chessboard - Puzzling Stack Exchange
Anita, from the city of circular roads, is visiting Bose this time. She’s excited to meet her friend and take a nice, well-deserved vacation by playing lots of...
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https://puzzling.stackexchange.com/questions/137787/where-are-the-kings
chess - Where are the kings? - Puzzling Stack Exchange
I wanted to show you a curious chess position, but unfortunately the kings fell off before I could take the picture. Where were they standing? FEN:...
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https://puzzling.stackexchange.com/questions/137763/trisecting-this-l-shaped-land
mathematics - Trisecting this ‘L’ shaped land - Puzzling Stack Exchange
Here’s a thick ‘L’ shaped land where a 4 × 4 square is removed from a corner of a 10 × 10 square. The farmer who owns the land wants to divide it among her...
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https://puzzling.stackexchange.com/questions/137776/the-submarine-of-liars
logical deduction - The Submarine of Liars - Puzzling Stack Exchange
You are trapped on a submarine with no one but its operator. There are five zones to the deep blue sea, in this order: Sunlight Zone Twilight Zone Midnight...
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https://puzzling.stackexchange.com/questions/137494/lights-out-variant-on-an-octahedron
mathematics - Lights-out variant on an octahedron - Puzzling Stack Exchange
You have an octahedron that’s covered in a 2 × 2 triangular grid, i.e., each face is divided into four congruent equilateral triangles (cells). Each cell of...
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https://puzzling.stackexchange.com/questions/133321/a-tour-through-a-city-of-circular-roads-with-no-sharp-turns
mathematics - A tour through a city of circular roads with no sharp turns - Puzzling Stack Exchange
Anita lives in a city with a peculiar road system: every road is a circle (not necessarily of the same radius). The rules of the system are simple: no sharp...
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https://puzzling.stackexchange.com/questions/tagged/word
Newest 'word' Questions - Puzzling Stack Exchange
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https://puzzling.stackexchange.com/questions/137714/can-you-make-a-rectangle-with-exactly-six-tangram-pieces
mathematics - Can you make a rectangle with exactly six tangram pieces? - Puzzling Stack Exchange
An extension of Can you make a square with exactly six tangram pieces? It's possible to make a square by using the seven tangram pieces: While making a square...
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https://puzzling.stackexchange.com/questions/tagged/solvability
Newest 'solvability' Questions - Puzzling Stack Exchange
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https://puzzling.stackexchange.com/questions/137580/cryptic-clue-piece-dark-we-hear-6
explanation - Cryptic clue: “Piece dark, we hear (6)” - Puzzling Stack Exchange
Clue is “Piece dark, we hear (6)”, answer is “Knight”. Night = dark but how does the ‘K’ relate to ‘piece’? …… Is it chess piece? From the Metro Cryptic...
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https://puzzling.stackexchange.com/users/78946/the-empty-string-photographer
User The Empty String Photographer - Puzzling Stack Exchange
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https://puzzling.stackexchange.com/questions/137587/do-the-creases-intersect
mathematics - Do the creases intersect? - Puzzling Stack Exchange
A rectangular sheet of paper is folded in equal halves along a line parallel to two of its sides. It is then unfolded and folded again so that those two sides...
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Newest 'metapuzzles' Questions - Puzzling Stack Exchange
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https://puzzling.stackexchange.com/questions/137808/arranging-digits-0-9-in-two-simple-equations
mathematics - Arranging digits 0-9 in two simple equations - Puzzling Stack Exchange
Here's a twist on another puzzle from Alex Bellos's Can You Solve My Problems?. The original puzzle is this: Arrange the digits 1-9 to satisfy the following...
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https://puzzling.stackexchange.com/questions/137716/111111111-made-by-1234567890
mathematics - 111111111 made by 1234567890 - Puzzling Stack Exchange
Use 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 only once to make 111111111(9 digits). You can use: concatenation in base 10, +, -, ×, ÷, ! (factorial), () (parentheses) I am...
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https://puzzling.stackexchange.com/questions/137500/the-calabash-calculator
mathematics - The Calabash Calculator - Puzzling Stack Exchange
You are introduced to the Calabash Calculator, which supports the following operations: The four basic arithmetic operations, + - × ÷ The six comparison...
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https://puzzling.stackexchange.com/questions/137710/can-you-make-a-square-with-exactly-six-tangram-pieces
mathematics - Can you make a square with exactly six tangram pieces? - Puzzling Stack Exchange
The pieces of the classic tangram puzzle can be rearranged into a square: If you ignore the two large triangles, the remaining five pieces can be made into a...
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https://puzzling.stackexchange.com/questions/137782/passing-trains-on-perfect-schedule
mathematics - Passing trains on perfect schedule - Puzzling Stack Exchange
My daughter is fascinated by train rides. She particularly likes watching trains passing by at high speeds (because, you know, speeds add up, relatively...
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https://puzzling.stackexchange.com/questions/137796/why-cant-you-cross-the-stream
logical deduction - Why can't you CROSS THE STREAM? - Puzzling Stack Exchange
This is a Cross the Streams puzzle. A sort of nonogram on steroids. Quoting the rules from a previous puzzle: Shade some empty cells black to create a single...
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https://puzzling.stackexchange.com/questions/137759/white-knights-flight
story - White Knight's Flight - Puzzling Stack Exchange
Let me tell you a story, and then you tell me how it ends. One of Heaven's paladins fell in battle. Tumbled through the depths of Hell, straight into a...
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https://puzzling.stackexchange.com/users/121907/boom
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https://puzzling.stackexchange.com/questions/tagged/number-property
Newest 'number-property' Questions - Puzzling Stack Exchange
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https://puzzling.meta.stackexchange.com/questions/8840/best-puzzles-of-2026-q1-january-march
Best puzzles of 2026 Q1 (January - March)? - Puzzling Meta Stack Exchange
This question is part of the best-puzzle award series What are your nominations for the best puzzles, here on Puzzling.SE, of the first quarter...
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https://puzzling.meta.stackexchange.com/questions/8835/lets-rewrite-our-generative-ai-help-center-page
Let's rewrite our generative AI help center page - Puzzling Meta Stack Exchange
Several pages in the Help Center can be edited by moderators to be site-specific, including the generative AI policy. What's there is currently the default. I...
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