SudoCue Users

Substitute Clueless Special #1

Rating based on required solving techniques: Tough
My personal rating based on actual solving: Tough / Hard

This one was generated with JSudoku. I just added a single clue to get rid of some advanced techniques required.
I have not yet tried to solve it manually myself but from the required techniques listed by JSudoku, I would say that this one can maximum be rated Hard.
EDIT: After having solved it myself, I would rate it in the twilight zone between Tough and Hard.

Anyone disagreeing, please say so!



306070201000000000000028079007000000401000705000000000205090007090000600000702010
010740050000000000307051090000000000709000803001000000400007006020600030900080100
800102076030000000700500409090000100008000000000000500201050000080000002000406000
900000030408050006000000400704000000000000100800000002001040600070000005502060900
007000009060301050000400000602000070000000000050000300009010804080003000000000020
080010070001000902400059000003000000906000700000000009070604000160000007000000500
000010400908000060500020000000000907705000800100000002009500304000000000601030720
020004006700900100001070003000000600008000205000000000085020007000000000003007501
045020000000006008060010000600000200007000000000000300070040603000003000050700902



In case anyone is interested, the Ultra Hard version with one clue less (g4:r9c5)



306070201000000000000028079007000000401000705000000000205090007090000600000702010
010740050000000000307051090000000000709000803001000000400007006020600030900080100
800102076030000000700500409090000100008000000000000500201050000080000002000406000
900000030408050006000000400704000000000000100800000002001040600070000005502000900
007000009060301050000400000602000070000000000050000300009010804080003000000000020
080010070001000902400059000003000000906000700000000009070604000160000007000000500
000010400908000060500020000000000907705000800100000002009500304000000000601030720
020004006700900100001070003000000600008000205000000000085020007000000000003007501
045020000000006008060010000600000200007000000000000300070040603000003000050700902

For the first one, I agree with a "Hard" rating.
I still miss the CluelessHelper ease of use, but I am getting better at using SudokuSolver user interfase. I prefer and not to type the puzzle again.
The solution I got: 261975384839412765547368219628534971975126843314897526456289137192743658783651492

I solved the first version using Jsudoku. I agree with the "hard" rating. It is comparable in difficulty to Ruud's easier Cluelesses. I can handle a little more difficult (but not a lot) so maybe I will try the "extra hard" version next time.

Very enjoyable. Thanks to Børge for creating, and Jean-Christophe for the excellent update to Jsudoku!