features an unparalleled collection of logic puzzles in a large page book format.
Draw the given number of bridges to join all the islands.
Place 1 to 6 in each row and column whilst fulfilling the inequality signs.
Draw non-touching lines to join all of the number pairs.
Solve each clue cage by fulfilling the sum, whilst placing 1 to 6 in each row and column.
Place the outside digits into the adjacent squares to solve the Sudoku.
Place buildings of varying heights to fulfil the outside clues, whilst fitting 1 to 6 into each row and column.
Place 1 to 9 in each row, column and jigsaw shape.
Extra Regions Sudoku
Place 1 to 9 into each added region, as well as row, column and box.
Place 1 to 9 into each of the five tightly overlapping grids.
Place 1 to 9 into all of the grids. This puzzle has extra regions too.
Place 1 to 9 into each row, column and 3x3 box. Sizes can vary, like this example - e.g. 6x6, 12x12, 16x16.
Place 1 to 9 in each row, column and 3x3 box whilst obeying the inequality signs.
Place 1 to 9 into each row, column and wrap-around jigsaw area.
Place 1 to 8 in each Sudoku region whilst obeying the skyscraper clues.
Draw a loop through the circles, turning on black and going straight on white.
Shade squares according to the arrows, whilst drawing a loop to fill the rest.
Shade squares to fulfil the clues, revealing a hidden picture.
Find the set of ships in the grid, based on the clues.
Shade a continuous set of squares to form regions of the given sizes.
Place a full set of regular dominoes into the grid.
Shade squares so no number is repeated in a row or column.
Place 1 to 9 into each empty square to give the stated sums.
Draw rectangles of the given sizes, using every square once and once only.
Place 1 to 9 so each cage adds to the given total, and all Sudoku constraints are met.
Jigsaw Killer Sudoku
Each cage adds to the given total and all rows, columns and boxes contain 1 to 9.
Draw a single loop that neighbours each digit the given number of times.
Shade each room the given number of times, so no more than two walls can be seen from any viewpoint.
Place lights to illuminate all squares but no other lights.
Find symmetrical shapes around each pivot to reveal a hidden picture.
Shade squares so that each clue number 'sees' the given number of squares.
Find a set of polyominoes that fill the grid without touching another of the same number.
Place 1 to 9 in each row, column and box whilst obeying the 2-away square joiners.
Repeated Digit Sudoku
Place the set of digits in each Sudoku region, with some numbers repeated.
Calcudoku cages but with rows, columns and boxes as in Killer Sudoku.
Sudoku grids with gaps in, and regions that continue across them.