SCS #2: JSudoku generated + a single Clue by me.

[Børge]

Substitute Clueless Special #2

Again I started with a puzzle generated by JSudoku and once more just added a single clue to "tame" it, i.e. to get rid of many advanced techniques.

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



803004020000000000209060003000000100100000500400000008000059200507000004300000700
508060409000000070090108000000000240009000000007000501010090000400700006030004020
000106704000000000705840102000000008102000500000000000080709001006000000010000203
050904000100000000004030200603000000000000409209000000000050060307000500000060010
900100070000000103024030000000000409050000000000000301800307000006000000040000680
800000007043020500000090001067000900000000003050000000000034002609000000000000109
401030900300000001000580000800000000003000109900000005008007200600000000700090604
000605001007000600040030000000000500030000402000000000020501083000000000090806050
103000000000009506500400008004000803700000200008000000030600402000000000020700001




And here the original Ultra Hard puzzle created by JSudoku with one clue less (g3:r3c4)



803004020000000000209060003000000100100000500400000008000059200507000004300000700
508060409000000070090108000000000240009000000007000501010090000400700006030004020
000106704000000000705040102000000008102000500000000000080709001006000000010000203
050904000100000000004030200603000000000000409209000000000050060307000500000060010
900100070000000103024030000000000409050000000000000301800307000006000000040000680
800000007043020500000090001067000900000000003050000000000034002609000000000000109
401030900300000001000580000800000000003000109900000005008007200600000000700090604
000605001007000600040030000000000500030000402000000000020501083000000000090806050
103000000000009506500400008004000803700000200008000000030600402000000000020700001

[Oscar]

The first one is REALLY Hard
It took me more than 4 hours
But I really enjoyed it you have to jump in and out of the clueless!
The solution is
628937415
437521968
195846327
579618243
286493751
341275689
954382176
762159834
813764592

[Børge]

My opinion is that the "good" ones are those which are easy as techniques, but require jumping from one to another of the subjacent sudokus.

It took me more than 4 hours
But I really enjoyed it you have to jump in and out of the clueless!

Be careful what you wish for!

When solving it I also had to do far more jumping between the grids than usual, but it did not take me that much longer than usual
My personal rating based on actual solving being Hard is because of all the jumping between the grids.