Place the digits 1 to 9 in every row, column, 3x3 standard block. All digits on the given diagonal must be different. Any possible diagonal under the given diagonal must also contain different digits. Besides, grey painted cells form renban groups. These groups must hold consecutive digits, in any order.
Solution code: Row 5, followed by column 8.
on 16. August 2021, 00:48 by zhergan
Tags revision..
on 30. July 2016, 20:25 by zhergan
I wanted to give 2 examples for the phrase "any possible diagonal under the given diagonal". R9C1-R8C2-R7C3-R6C4-R5C5 forms a possible diagonal. Also R7C1-R8C2-R9C3 forms another such possible diagonal..