Sentinels
Star Battle / region placement
Every row gets one sentinel. So does every column, and so does every coloured region. The catch is that no two of them may stand next to each other, and that includes diagonally.
Three logic puzzles, new every day at your local midnight. Clear all three and the day counts as perfect. Still want more? Unlimited never runs out.
One sentinel per row, column and region. None may touch.
Suns and moons in balance. Never three in a row.
One unbroken line through every cell, hitting the numbers in order.
Every board is tested before it goes up: one answer and only one, and an answer you can reach by reasoning alone. Anything that fails either test never reaches the site. How that works →
So were we, which is why the day’s three puzzles aren’t the end of it. Each game has an Unlimited mode at four difficulties, and every Daily we have ever published stays in the archive.
Your streaks and times are saved on this device and nowhere else. Getting a new phone? Export the file from your stats page and load it on the other side.
Star Battle / region placement
Every row gets one sentinel. So does every column, and so does every coloured region. The catch is that no two of them may stand next to each other, and that includes diagonally.
Binairo / binary balance
Fill the grid with suns and moons. Each row and each column ends up with equal numbers of both, and you can never put three of the same symbol in a line. The small "=" and "×" markers between cells tell you where two cells must match, and where they must differ.
Hamiltonian path with numbered waypoints
Draw a single line from waypoint 1 to the highest number, picking up the numbered cells in order along the way. It has to fill every square on the board, and it can never cross itself.