Dec 28, 2019 · According to the 4x4 grid that dot doesn’t exist and therefore it doesn’t really count, but anyway it’s an alternative solution :) $\endgroup$ – user64580 Commented Dec 28, 2019 at 22:34

Jul 17, 2024 · A 4x4 grid of numbers with unique row, column and diagonal ranges. 4. 4x4 square with no increasing ...

Mar 29, 2020 · Now if we assign values according to second grid 1,2 ..16 then the grid will look like below : 972 7 5 52 18 28 x 25 26 22 24 50 9 400 55 4 Now if take second row : 28 - 18 = 10 + 16 =26 - 1= 25 Taking third colmnn : 16 * 5 - 24= 56 -1 = 55

Oct 19, 2023 · You are given a 4x4 grid with 3 crosses as shown below. Each turn, you can select a cross and slide it along horizontally or vertically. It will continue sliding until it hits another cross or a wall. Can you get a cross into one of the squares in the central 2x2 subgrid? Bonus: can you get multiple crosses into the central 2x2 subgrid?

Dec 30, 2019 · Can you place every number from 1 to 16 into a 4x4 grid such that the range of every row, column and two main diagonals is a unique value? The range of a row is the difference between its maximum and minimum values (similarly for columns and diagonals). Here is a similar question for 3x3: A 3x3 grid of numbers with unique row and column ranges

Mar 28, 2021 · Can you swap black and white knights in this 4x4 grid? There is one important constraint: at no point can a knight be under attack by an opponent knight. Knights move using standard chess moves (L shapes) and can be moved in any order (no need to alternate colours). Knights cannot exit the grid.

Nov 22, 2021 · $\begingroup$ @DmitryKamenetsky : I adapted my code for any grid size and I had the surprise to discover that with n=5, there is no solution to put the 5 colors, even though there are 280 configurations for choosing 5 tiles with distinct distances. $\endgroup$

The thing to note is that the 4x4 layout is not ordered in any particular way - the items could just as easily be given as an unordered list of 16 items. There are four groups of four items - your job is to identify them.

Feb 27, 2022 · This time your task is to find the hardest 4x4 grid. In particular, find a 4x4 grid containing every number from 0 to 9 at least once, such that the longest path that visits distinct numbers is as short as possible. The path can start at any number and can move horizontally or vertically, but not diagonally. You can use a computer for this.

Oct 16, 2015 · Given a 4x4 grid of squares, can you black out exactly six of them so that the number of blacked out squares in each row, as well as in each column, is even. All solutions are permutations of a single one (i.e. all solutions are obtained from any given one by simply flipping around rows and columns).