Skyscraper: Enter a number into each square, which represents the height of a skyscraper. Each row and column of each grid must contain all different numbers. A number outside the grid indicates how many skyscrapers are visible from that direction, where taller skyscrapers block the view of shorter ones behind them.
Kakuro: Enter digits 1–9 into the white squares in such a way that every horizontal and vertical contiguous run of digits has the sum indicated before it. The digits in each such run must be all different.
Akari-Tents hybrid with diagonals: Place lamps in some white squares in such a way that every white square is illuminated and no lamp directly shines at another. Lamps shine in all horizontal, vertical and diagonal directions, even diagonally across corners of black squares, but not diagonally between two black squares (nor right through black squares). There is exactly one lamp plugged into each outlet (circle). Lamps must be orthogonally or diagonally adjacent to their corresponding outlet (and may also be adjacent to another outlet that has its own lamp elsewhere).