Futoshiki (不等式 futōshiki), or More or Less, is a logic puzzle game from Japan. Its name means "inequality". It is also spelled hutosiki (using Kunrei-shiki romanization). Futoshiki was developed by Tamaki Seto in 2001.
The puzzle is played on a square grid.
The objective is to place the numbers such that each row and column contains only one of each digit. Some digits may be given at the start.
Inequality...