Daily Greater Than Sudoku
The extra rule
Each chevron points at the smaller of the two digits it sits between.
Inside every box, each pair of touching cells carries a chevron, and it points at the smaller digit. There are no given digits at all.
The signs never cross a box border, so each box is a small ranking puzzle of its own. Start where a chain of chevrons all point the same way: the cell at the far end has to be a 1 or a 9.
Working out that first box is the hardest part. After that the rows and columns start doing the work for you.
Controls
Click a cell and type a digit, or use the pad. Space toggles pencil marks. Arrow keys move. Progress saves in this browser as you go, so you can come back to the same puzzle later today.
Solvable Without Guessing
Every puzzle here was generated and then handed to a solver that is only allowed techniques a person can use. If it could not finish the grid without a guess, the puzzle was thrown away rather than published. That also makes the answer unique, because every digit it placed was forced.
More to Play
There is also a kropki sudoku, a xv sudoku, a even odd sudoku, a nonogram with hand drawn pictures, and 2048. All of them are on the games page, and the solvers for real objects are on the puzzle tools page.