- Code: Select all
*-----------*
|...|..4|..2|
|.1.|.8.|9..|
|9..|6.2|1..|
|---+---+---|
|..1|4..|8..|
|23.|...|.79|
|..9|..3|6..|
|---+---+---|
|..8|9.6|..4|
|..5|.4.|.6.|
|1..|2..|...|
*-----------*
Play/Print this puzzle online
*-----------*
|...|..4|..2|
|.1.|.8.|9..|
|9..|6.2|1..|
|---+---+---|
|..1|4..|8..|
|23.|...|.79|
|..9|..3|6..|
|---+---+---|
|..8|9.6|..4|
|..5|.4.|.6.|
|1..|2..|...|
*-----------*
*--------------------------------------------------------------*
| 6 5 37 | 1 9 4 |a37 8 2 |
| 4 1 2 | 35 8 7 | 9 b35 6 |
| 9 8 37 | 6 35 2 | 1 4 5-7 |
|--------------------+--------------------+--------------------|
| 5 7 1 | 4 6 9 | 8 2 3 |
| 2 3 6 | 58 15 158 | 4 7 9 |
| 8 4 9 | 7 2 3 | 6 15 15 |
|--------------------+--------------------+--------------------|
|d37 2 8 | 9 1357 6 | 35-7 c13 4 |
|e37 9 5 | 38 4 18 | 2 6 f178 |
| 1 6 4 | 2 357 58 | 35-7 9 78 |
*--------------------------------------------------------------*
6 5 37 | 1 9 4 | 37 8 2
4 1 2 | 35 8 7 | 9 35 6
9 8 37 | 6 35 2 | 1 4 57
--------------------+----------------------+---------------------
5 7 1 | 4 6 9 | 8 2 3
2 3 6 | 58 15 158 | 4 7 9
8 4 9 | 7 2 3 | 6 15 15
--------------------+----------------------+---------------------
a37 2 8 | 9 b1357 6 | 57-3 1-3 4
37 9 5 | 38 4 18 | 2 6 178
1 6 4 | 2 c357 58 | d357 9 78
*-----------------------------------------------------------*
| 6 5 37 | 1 9 4 | 37 8 2 |
| 4 1 2 | 35 8 7 | 9 35 6 |
| 9 8 37 | 6 35 2 | 1 4 57 |
|-------------------+-------------------+-------------------|
| 5 7 1 | 4 6 9 | 8 2 3 |
| 2 3 6 | 58 15 158 | 4 7 9 |
| 8 4 9 | 7 2 3 | 6 15 15 |
|-------------------+-------------------+-------------------|
| 37 2 8 | 9 1357 6 | 357 13 4 |
| 37 9 5 |*38 4 18 | 2 6 178 |
| 1 6 4 | 2 57-3 *58 |*357 9 78 |
*-----------------------------------------------------------*
+---------+-------------+------------+
| 6 5 37 | 1 9 4 | 37 8 2 |
| 4 1 2 | 35 8 7 | 9 35 6 |
| 9 8 37 | 6 35 2 | 1 4 57 |
+---------+-------------+------------+
| 5 7 1 | 4 6 9 | 8 2 3 |
| 2 3 6 | 58 15 158 | 4 7 9 |
| 8 4 9 | 7 2 3 | 6 15 15 |
+---------+-------------+------------+
| 37 2 8 | 9 1357 6 | 357 13 4 |
| 37 9 5 | 38 4 18 | 2 6 178 |
| 1 6 4 | 2 357 58 | 357 9 78 |
+---------+-------------+------------+
Marty R. wrote:
- Code: Select all
+---------+-------------+------------+
| 6 5 37 | 1 9 4 | 37 8 2 |
| 4 1 2 | 35 8 7 | 9 35 6 |
| 9 8 37 | 6 35 2 | 1 4 57 |
+---------+-------------+------------+
| 5 7 1 | 4 6 9 | 8 2 3 |
| 2 3 6 | 58 15 158 | 4 7 9 |
| 8 4 9 | 7 2 3 | 6 15 15 |
+---------+-------------+------------+
| 37 2 8 | 9 1357 6 | 357 13 4 |
| 37 9 5 | 38 4 18 | 2 6 178 |
| 1 6 4 | 2 357 58 | 357 9 78 |
+---------+-------------+------------+
(8=3)r8c4-r2c4=r2c8-(3=1)r7c8-r7c5=1r8c6=>r8c6=1
Does this loop have a name?
In conventional Eureka notation, it would be a simple AIC (Alternating Inference Chain):
(8=3)r8c4-(3)r2c4=(3)r2c8-(3=1)r7c8-(1)r7c5=(1)r8c6 => r8c6<>8
It's not actually a loop, unless you include the two implied weak links [to (8)r8c6] at each end of the chain.
pjb wrote:I might be a bit old fashioned, but to me this is a discontinuous nice loop:
8 (r8c6) - (8=3) r8c4 - r2c4 = r2c8 - (3=1) r7c8 - r7c5 = r8c6 => -8 r8c6
Phil