- Code: Select all
.5.|.29|...
.29|..1|.5.
...|..6|4..
---+---+---
1.5|..8|.6.
4..|53.|...
.9.|...|..4
---+---+---
...|...|..7
..8|7..|..1
21.|..3|9..
(This puzzle was created by me so I am not looking to solve it, only to see how hard it can get.)
.5.|.29|...
.29|..1|.5.
...|..6|4..
---+---+---
1.5|..8|.6.
4..|53.|...
.9.|...|..4
---+---+---
...|...|..7
..8|7..|..1
21.|..3|9..
*-----------------------------------------------------------*
| 368 5 4 | 38 2 9 | 17* 17* 368 |
| 368 2 9 | 4 7 1 | 38 5 368 |
| 378 378 1 | 38 5 6 | 4 29 29 |
|-------------------+-------------------+-------------------|
| 1 37 5 | 9 4 8 | 237 6 23 |
| 4 678- 26 | 5 3 27 | 178* 1789* 89# |
| 378 9 23 | 1 6 27 | 5 378- 4 |
|-------------------+-------------------+-------------------|
| 9 4 36 | 2 1 5 | 368 38 7 |
| 5 36 8 | 7 9 4 | 236 23 1 |
| 2 1 7 | 6 8 3 | 9 4 5 |
*-----------------------------------------------------------*
*-----------------------------------------------------------*
| 36* 5 4 | 8 2 9 | 17 17 36* |
| 36* 2 9 | 4 7 1 | 38 5 368* |
| 7 8 1 | 3 5 6 | 4 29 29 |
|-------------------+-------------------+-------------------|
| 1 37 5 | 9 4 8 | 237 6 23 |
| 4 67 26 | 5 3 27 | 178 1789 89 |
| 8 9 23 | 1 6 27 | 5 37 4 |
|-------------------+-------------------+-------------------|
| 9 4 36 | 2 1 5 | 368 38 7 |
| 5 36 8 | 7 9 4 | 236 23 1 |
| 2 1 7 | 6 8 3 | 9 4 5 |
*-----------------------------------------------------------*
*-----------------------------------------------------------*
| 368 5 4 | 38 2 9 |*17 *17 368 |
| 368 2 9 | 4 7 1 | 38 5 368 |
| 378 #378 1 | 38 5 6 | 4 29 29 |
|-------------------+-------------------+-------------------|
| 1 @37 5 | 9 4 8 | 237 6 23 |
| 4 678 26 | 5 3 27 |-178 -1789 89 |
|#378 9 @23 | 1 6 27 | 5 @378 4 |
|-------------------+-------------------+-------------------|
| 9 4 36 | 2 1 5 | 368 38 7 |
| 5 @36 8 | 7 9 4 | 236 -23 1 |
| 2 1 7 | 6 8 3 | 9 4 5 |
*-----------------------------------------------------------*
udosuk wrote:rep'nA, your first UR doesn't need the help from r5c9
udosuk wrote:=> Naked triple of {189} in r5c789 => r6c1=8 => r3c2=8
999_Springs wrote:How hard is this puzzle? Is it possible to solve it without using forcing chains?
*---------------------------------------------------*
| 368 5 4 | 38 2 9 | 17 17 368 |
| 368 2 9 | 4 7 1 | 38 5 368 |
| 378 378 1 | 38 5 6 | 4 29 29 |
|----------------+----------------+-----------------|
| 1 37 5 | 9 4 8 | 237 6 23 |
| 4 678 26 | 5 3 27 | 178 1789 89 |
| 378 9 23 | 1 6 27 | 5 378 4 |
|----------------+----------------+-----------------|
| 9 4 36 | 2 1 5 | 368 38 7 |
| 5 36 8 | 7 9 4 | 236 23 1 |
| 2 1 7 | 6 8 3 | 9 4 5 |
*---------------------------------------------------*
I dont see the link [r12c9]=8=[r12c1], please explain.Carcul wrote:[r2c7]-8-[r12c9]=8=[r12c1]-8-[r6c1]=8=[r6c8]-8-[r7c8]=8=[r7c7]-8-
-[r2c7], => r2c7<>8 solving the puzzle.
ravel wrote:I dont see the link [r12c9]=8=[r12c1], please explain.Carcul wrote:[r2c7]-8-[r12c9]=8=[r12c1]-8-[r6c1]=8=[r6c8]-8-[r7c8]=8=[r7c7]-8-
-[r2c7], => r2c7<>8 solving the puzzle.
ravel wrote:In fact there is a nishio for 8 in r2c7, so the fishermen again are invited to identify the creature.
. . . | 8 . . | . . .
. . . | . . . | 8 . .
. 8 . | . . . | . . .
---------+----------+----------
. . . | . . 8 | . . .
. . . | . . . | . . 8
8 . . | . . . | . . .
---------+----------+----------
. . . | . . . | . 8 .
. . 8 | . . . | . . .
. . . | . 8 . | . . .
*-----------------------------------------------------------*
| 368 5 4 | 38 2 9 | 17 17 368 |
| 368 2 9 | 4 7 1 | 38 5 368 |
| 1378 378 13 | 38 5 6 | 4 29 29 |
|-------------------+-------------------+-------------------|
| 137 37 5 | 9 4 8 | 1237 6 23 |
| 4 678 126 | 5 3 27 | 178 1789 89 |
| 378 9 23 | 1 6 27 | 5 378 4 |
|-------------------+-------------------+-------------------|
| 9 4 36 | 2 1 5 | 368 38 7 |
| 5 36 8 | 7 9 4 | 236 23 1 |
| 2 1 7 | 6 8 3 | 9 4 5 |
*-----------------------------------------------------------*
If you remove the 2 in r9c1 instead, you get a harder one:999_Springs wrote:Does removing the 1 in r4c1 make any difference to the techniques used in solving the puzzle?
+-------+-------+-------+
| . 5 . | . 2 . | . . . |
| . 2 9 | . . 1 | . 5 . |
| . . . | . . 6 | 4 . . |
+-------+-------+-------+
| 1 . 5 | . . 8 | . 6 . |
| 4 . . | 5 3 . | . . . |
| . 9 . | . . . | . . 4 |
+-------+-------+-------+
| . . . | . . . | . . 7 |
| . . 8 | 7 . . | . . 1 |
| . 1 . | . . 3 | 9 . . |
+-------+-------+-------+