The gallery

Return each number to its place, one gentle slide at a time.

Turn two cards at a time and find every matching pair.

Each touch turns a lantern and its neighbours. Dim them all.

Turn each tile until every strand of yarn joins up, with no loose ends.

Move the whole stack of discs, one at a time, to the far peg.

Use the number hints to reveal a hidden picture.

Guess the secret row of four colours in ten tries.

Slide and merge matching numbers until you reach 512.

The classic jumping-peg board. Leave just one standing.

A gentle four-by-four sudoku for a quiet moment.

Watch the soft pattern of lights, then play it back.

Noughts and crosses against a friendly opponent.

Spread colour from one corner until the board is a single shade.

Place six queens so that none can reach another.

One shared word a day for everyone, plus practice rounds. Your place is kept, day by day.

Draw a single unbroken line through every square on the board.

A dog drawn from winding arrow lines. Free them one by one, in the right order.