Not seen for long:
- Code: Select all
+-------------------+-----------------+------------------+
| 7 8 9 | 5 1 6 | 3 4 2 |
| 2 4 3 | 9 8 7 | 1 5 6 |
| 156* 16* 15* | 2 4 3 | 9 78 78 |
+-------------------+-----------------+------------------+
| 4 3-7 8 | 6 37 2 | 5 19 19 |
| 35 29 6 | 1 39 45 | 7 28 48 |
| 15* 29 a157* | 8 79 45 | 24 6 3 |
+-------------------+-----------------+------------------+
| 136* 16* b1-7 | 37 5 8 | 24 29 49 |
| 8 5 4 | 37 2 9 | 6 137 17 |
| 9 37 2 | 4 6 1 | 8 37 5 |
+-------------------+-----------------+------------------+
Added shorter solution (Tks eleven !)
MUG (156)r3c123, r6c46, r7c12 using mixed internal-external
(7)r6c3 == (1)r7c3 => -7 r7c3; ste
Using internals (7)r
6c3 == (3)r7c1 - (3=7)r9c2 => -7 r7c3, r4c2; ste
First found:
- Code: Select all
+-------------------+-----------------+------------------+
| 7 8 9 | 5 1 6 | 3 4 2 |
| 2 4 3 | 9 8 7 | 1 5 6 |
| 156* 16* 15 | 2 4 3 | 9 78 78 |
+-------------------+-----------------+------------------+
| 4 37 8 | 6 37 2 | 5 19 19 |
| 35 29 6 | 1 39 45 | 7 28 48 |
| 5+1 29 57(1) | 8 79 45 | 24 6 3 |
+-------------------+-----------------+------------------+
| 136* 16* 17 | 37 5 8 | 24 29 49 |
| 8 5 4 | 37 2 9 | 6 13+7 17 |
| 9 37 2 | 4 6 1 | 8 37 5 |
+-------------------+-----------------+------------------+
Two independant DP's
BUG-lite in columns 3 to 9, with two guardians: 1r6c3 & 7r8c8
UR(16)r37c12 having a single external guardian: +1 r6c1 => 1r6c3 can't be true => +7 r8c8; ste