ixsetf wrote:Maybe I am confused about the rules, but for squares like r1c5 wouldn't there be multiple valid answers? Neither a 1 or a 2 would produce an immediate contradiction, and since it is not connected to the rest of the grid its value has no effect on the height values on the rest of the puzzle. I am unclear how you would go about making a determination about which value is correct.
Depends on what's in r2c5. If, for example, r2c5 is a 3, then in r1c5, 1 would be legal, and 2 would not.