Oct 27, 2023 · 5x5 grid with no tetrominoes containing repeating colors. 4. Two knight tours on a 4x4 grid. 1. 4x4 grid ...

Sep 16, 2019 · Here, I made another guess and wrote down Cb as 5, but to be rigorous — if we were to make Cb a 6, then Bd and Dd have to be 8 and 7 in some order, but neither …

Oct 19, 2023 · Well you probably already knew that this was coming after the last two puzzles :) I believe this is the most beautiful one. You are given a 5x5 grid with 3 crosses as shown below. …

Oct 7, 2019 · All numbers in a 5x5 Minesweeper grid. 4. All numbers twice in a 7x7 Minesweeper grid. 9.

Jun 28, 2021 · 25 dots are drawn as a 5x5 regular square grid. Can you draw 3 triangles that pass through every dot? The corners of the triangles must lie on the dots, ie., they cannot lie outside …

Feb 19, 2018 · Given a 5x5 grid of boxes, place diagonals within the boxes such that: each diagonal connects opposite corners of one of the 25 boxes; each box contains at most one …

Dec 5, 2019 · Can you find a 5x5 grid that will require the most commands to be solved from any starting position of the robot? The grid must include the terminal cell T, which must be …

Mar 20, 2017 · The symbol we know most about at the outset is 4, since it appears twice on the grid, already paired with one letter. Let's put in pencil marks on other places 4 could possibly …

Dec 3, 2020 · You start with an empty 5x5 grid. At each turn you choose an empty cell and place a value in it. The placed value is given by the following rules: If the chosen cell has no …

Jun 17, 2021 · Can you paint a $5 \\times 5$ grid in two colors, such that each of the $2 \\times 2$ possible sub-grids ($2^4 = 16$ combinations) occurs exactly once in the grid?