- Code: Select all
`026009000`

000000000

500000007

010000006

489010003

000002050

008041090

040000071

090300000

I have reached the point where I seem to have two Intersecting UR1's in the rightmost three columns.

Simplified (with only the possible values for the seven squares showing) this looks like:

- Code: Select all
`+====+====+====+`

|45 | |45 |

+----+----+----+

| | | |

+----+----+----+

| | | |

+====+====+====+

|4 8|4 8| |

+----+----+----+

| | | |

+----+----+----+

| | | |

+====+====+====+

| | | |

+----+----+----+

| | | |

+----+----+----+

|4568|4 8|45 |

+====+====+====+

Can the 4568 square safely be reduced to the value 6? The 45 UR removes the 4 and the 5 while the 48 UR removes the 4 and the 8. So 45 and 8 can all be eliminated leaving just the 6, but performing one UR Elimination stops the other working and vice versa.

Just out of curiosity - I've archived the original, so I can revisit it another time.

APOLOGIES - I gave the wrong initial puzzle the first time I posted this.

THANKS/APOLOGIES - As DAJ realised, I also asked about the 3468 square instead of the 4568 square (Gnifer Trouble)