# Tag Info

Accepted

### One number grid, two ways to divide it

Solution: Proof it's the smallest:
• 5,096
Accepted

### Fill the grid with numbers to make all four equations true

The filled grid: Explanation:

• 12.8k
Accepted

### The Master Tetrist

Gladys is at Here is the filled in grid: Answers to clues: Across Down I must say I did not use the tetris aspect at all, but just solved the first few clues across/down and worked from there.
Accepted

### Manhattan distance

The place to start is: Now let us place: Moving down the chain: And the next: You guessed it: Finishing up:
• 29.2k
Accepted

• 760
Accepted

### The minimal Anti-Sudoku

Strategy We already have a computer solution, so I will try to show how a human can obtain it. The strategy is to set the numbers $1,2,\dots,9$ on the anti-sudoku grid one by one. Let $A$ be the ...
• 622

### Fill a grid with numbers so that each row/column calculation yields the same number

It is possible to find a solution by hand using more logic and less bruteforcing/guessing. First use Someone's insight: Also note the number 5: and the symmetry of the grid: Make an educated guess: ...
• 17k

### Fill a grid with numbers so that each row/column calculation yields the same number

One possible solution is: I found this by I'm not sure
• 8,470
Accepted

### One number grid, two ways to divide it (Part 2)

The least common multiple of 3 and 4 is 12, so the smallest grid must have 12 of each number, with a total area of 48 units. Three rectangular grids of this size have solutions. The 3 x 16 rectangular ...
• 16.8k

### Manhattan distance

Since someone beat me to it, I won't post the solve path, but only the key observation, that The solve is easiest if you and the full solution is
• 2,172

### Fill a grid with numbers so that each row/column calculation yields the same number

Nothing clever here, just a programmed evaluation of all permutations. There are three essentially different solutions: Each of these can be manipulated through row/column swaps and/or reflection ...
• 16.8k

• 760

### The Master Tetrist

The filled grid: The three unclued entries spell
• 150k
Accepted

### Pinwheels - Colombian Sudoku

You can solve the problem via integer linear programming as follows, with binary decision variables $x_{ijk}$ to indicate whether cell $(i,j)$ contains digit $k$: For each region (row, column, or \$2\...
• 15.5k
Accepted

### Ying Yang 12x12 - Colombian Sudoku

Via integer linear programming, using the formulation described in my answer https://puzzling.stackexchange.com/a/128031/65277:
• 15.5k

Consider
• 11.9k
1 vote
Accepted

### Fill a grid with numbers so that each row/column calculation yields the same number

Based on other answers that already classified all solutions to the original puzzle, here is an observation that one can solve the puzzle with an additional constraint. Namely one can request that all ...
• 2,064
1 vote

### One number grid, two ways to divide it

When I posted the puzzle, I had a solution whose lower half is different from Jujustum's:
• 17k

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