These are our in-depth tutorials for puzzles, with more being added once they’ve appeared in one of our books. The table of contents in our puzzle books will include a thumbnail of the type of puzzle, and a QR code, which will take you directly to its tutorial page. Variants with no significant change in solving technique, such as some Sudoku puzzles with extra regions, will appear at the bottom of the main tutorial page with a brief explanation of what is different.
Given a range of letters (usually A through C), place them into the grid so that they each appear one time in every row and column. Commonly, the grid is also larger than required, so empty cells are part of the solution.
Divide the grid into polyomino regions by filling every cell with a number. Contiguous groups of cells with the same number form each region.
Fill each region with numbers from 1 to X (X is the size of the region). Numbers outside the grid indicate the sum of that row of column.
Fill in numbers from 1 to N (N is the size of the grid) such that there are no duplicates in rows or columns. Inequality symbols between adjacent cells indicate which number is larger.
Place diagonal lines in every cell so that there are no closed loops. Circled numbers indicate how many lines touch that intersection.
Draw bridges between islands to create one connected group. Numbers on the islands indicate the number of bridges that connect to that island.
Place the required number of monsters in the grid. Numbers indicate the number of visible monsters from that point.
Color the specified number of cells in each region. Empty cells must form a single contiguous group.
Fill in the stones with numbers to show the correct order to pick them up, moving from one stone to another by the grid lines.
Find and shade all duplicate numbers in rows and columns, leaving only unique digits. No shaded cell may be adjacent to another, and unshaded cells must form a contiguous area.
