Fill the grid using number clues
Find all mines without detonating
Rotate pieces to connect all pipes
Find all hidden words in the grid
Find words in the letter grid
Fill the grid with 0s and 1s
Connect islands with bridges
Sudoku with caged sum constraints
Place lights to illuminate every cell
Fill the crossword grid with digits
Draw a single loop around the numbers
Locate the hidden fleet
Flood the grid leaving white islands
Sudoku with irregular shaped regions
Divide the grid into rectangles
Fill the 9×9 grid with digits 1–9
Shade cells based on neighbor counts
Split the grid into two connected groups
Fill the grid matching building views
Draw a loop through black and white circles
Reduce the board to one piece by capturing
Place stars in every row, column and region
Pair each tree with a tent
Eliminate duplicates by shading cells
Fill the grid respecting inequalities
Fill each cell with a diagonal line
Shade a connected wall using clues
Fill tanks with water by the numbers
Fill thermometers from bulb to tip
Find where each domino piece is placed
Place tetrominoes in each region
Shade cells without breaking the rules
Place chess pieces without conflicts
Shade cells to match row and column sums
Divide the grid into rotationally symmetric regions
Binairo with extra constraints
Shade cells matching number visibility
Guide the piece to capture all targets
Loop through circles matching their numbers
Fill white areas with right triangles
Shade cell pairs in each region
Place consecutive numbers with dot hints
Connect every region with exactly one stitch