Solving Script
Hell 12

Hidden single 3 in row 4  (r4c6=3)
   r2c6<>3
   r4c6<>2
   r4c6<>4
   r4c6<>6
   r4c6<>7
Hidden single 3 in row 2  (r2c4=3)
   r2c4<>1
   r2c4<>2
   r2c4<>6
   r2c4<>9
Hidden single 8 in row 4  (r4c2=8)
   r4c2<>2
   r4c2<>4
   r4c2<>6
Hidden single 5 in row 6  (r6c7=5)
   r6c7<>1
   r6c7<>4
   r6c7<>6
   r7c7<>5
   r8c7<>5
Hidden single 5 in row 8  (r8c6=5)
   r1c6<>5
   r2c6<>5
   r7c5<>5
   r7c6<>5
   r8c6<>1
   r8c6<>9
   r9c6<>5
Hidden single 5 in col 5  (r2c5=5)
   r2c2<>5
   r2c5<>1
   r2c5<>2
   r2c5<>9
Hidden single 8 in col 5  (r3c5=8)
   r1c4<>8
   r3c4<>8
   r3c5<>1
   r3c5<>2
   r3c5<>7
   r3c5<>9
   r3c9<>8
Hidden single 9 in col 5  (r5c5=9)
   r5c4<>9
   r5c5<>1
   r5c5<>2
   r5c6<>9
Naked double row 8 - 16
   r8c4<>1
   r8c7<>1
   r8c7<>6
Naked double box 9 - 16
   r7c8<>1
   r7c8<>6
   r7c9<>1
   r7c9<>6
   r9c8<>1
   r9c9<>1
Naked single 5 row 7 column 9  (r7c9=5)
   r7c1<>5
   r9c9<>5
Locked candidate (4) in row 3
   r2c2<>4
   r2c3<>4
ER_Row1 = 2 Row2 = 9 col1 = 7 col2 = 6 digit = 9 target = 96 hinge = 97
   r9c6<>9
Hidden double row 9 - 89
   r9c4<>1
   r9c4<>4
   r9c4<>7
Naked double col 4 - 89
   r1c4<>9
   r3c4<>9
ER_Row1 = 7 Row2 = 6 col1 = 5 col2 = 8 digit = 1 target = 68 hinge = 78
   r6c8<>1
Hidden single 1 in box 6  (r5c9=1)
   r1c9<>1
   r3c9<>1
   r5c4<>1
   r5c6<>1
   r5c9<>2
   r5c9<>6
Locked Candidate (2) in row 5
   r4c5<>2
   r6c4<>2
   r6c5<>2
Hidden single 2 in col 5  (r7c5=2)
   r7c4<>2
   r7c5<>1
   r7c5<>7
   r7c6<>2
Hidden single 1 in col 5  (r6c5=1)
   r6c4<>1
   r6c5<>7
Hidden single 7 in col 5  (r4c5=7)
   r4c3<>7
   r6c4<>7
Hidden single 7 in row 6  (r6c1=7)
   r1c1<>7
   r3c1<>7
   r6c1<>4
   r6c1<>6
Hidden single 7 in col 3  (r3c3=7)
   r3c3<>1
   r3c3<>2
   r3c3<>4
   r3c3<>6
   r3c4<>7
   r3c6<>7
ER_Row1 = 6 Row2 = 2 col1 = 2 col2 = 8 digit = 2 target = 28 hinge = 22
   r2c8<>2
ER_Row1 = 8 Row2 = 4 col1 = 8 col2 = 3 digit = 6 target = 43 hinge = 48
   r4c3<>6
Locked Candidate (6) in row 4
   r6c8<>6
ER_Row1 = 8 Row2 = 2 col1 = 3 col2 = 7 digit = 6 target = 27 hinge = 87
   r2c7<>6
W Wing: twin 46 r1c1 47 r2c2 51 Link1 71 Link2 77 digit 6 remove 4
   r4c3<>4
Hidden single 4 in row 4  (r4c7=4)
   r2c7<>4
   r4c7<>6
   r6c8<>4
Hidden single 4 in row 2  (r2c8=4)
   r2c8<>1
   r2c8<>6
Hidden single 6 in row 4  (r4c9=6)
   r1c9<>6
   r3c9<>6
   r4c9<>2
Hidden single 2 in row 4  (r4c3=2)
   r2c3<>2
   r6c2<>2
Hidden single 2 in row 6  (r6c8=2)
   r1c8<>2
Hidden single 4 in col 3  (r9c3=4)
   r7c1<>4
   r9c1<>4
   r9c2<>4
   r9c3<>1
   r9c6<>4
Locked candidate (6) in box 3
   r1c1<>6
   r1c2<>6
   r1c4<>6
   r1c6<>6
ER_Row1 = 9 Row2 = 2 col1 = 2 col2 = 6 digit = 1 target = 26 hinge = 22
   r2c6<>1
ER_Row1 = 8 Row2 = 2 col1 = 3 col2 = 7 digit = 1 target = 27 hinge = 87
   r2c7<>1
Naked single 9 row 2 column 7  (r2c7=9)
   r1c7<>9
   r1c9<>9
   r2c6<>9
   r3c9<>9
   r8c7<>9
Hidden single 9 in row 8  (r8c4=9)
   r8c4<>8
   r9c4<>9
Hidden single 8 in row 8  (r8c7=8)
   r1c7<>8
   r9c9<>8
Hidden single 8 in row 1  (r1c9=8)
   r1c9<>2
Hidden single 8 in row 9  (r9c4=8)
Hidden single 9 in row 9  (r9c9=9)
Hidden single 2 in col 9  (r3c9=2)
   r3c2<>2
   r3c4<>2
   r3c6<>2
Naked double row 1 - 16
   r1c2<>1
   r1c4<>1
   r1c6<>1
Locked candidate (1) in box 2
   r3c2<>1
Naked double col 2 - 46
   r2c2<>6
XY-Chain 96 14 digit = 7
   r1c6<>7
   r7c4<>7
Hidden single 7 in row 1  (r1c4=7)
   r1c4<>2
Hidden single 2 in col 4  (r5c4=2)
   r5c4<>4
   r5c4<>6
   r5c6<>2
X-wing of 6's  (r36 c24)
   r3c1<>6
   r3c6<>6
XY-Chain 36 11 digit = 9
   r1c6<>9
   r3c1<>9
Hidden single 9 in row 1  (r1c1=9)
   r1c1<>5
Hidden single 5 in row 1  (r1c2=5)
   r1c2<>2
   r9c2<>5
Hidden single 2 in row 1  (r1c6=2)
   r2c6<>2
Hidden single 2 in row 2  (r2c2=2)
   r2c2<>1
Hidden single 1 in row 2  (r2c3=1)
   r2c3<>6
   r8c3<>1
Hidden single 6 in row 2  (r2c6=6)
   r3c4<>6
   r5c6<>6
Hidden single 6 in row 3  (r3c2=6)
   r3c2<>4
   r6c2<>6
Hidden single 4 in row 3  (r3c1=4)
   r5c1<>4
Hidden single 9 in row 3  (r3c6=9)
   r3c6<>1
Hidden single 1 in row 3  (r3c4=1)
   r7c4<>1
Hidden single 4 in row 5  (r5c6=4)
   r6c4<>4
   r7c6<>4
Hidden single 6 in row 5  (r5c1=6)
   r7c1<>6
Hidden single 4 in row 6  (r6c2=4)
Hidden single 6 in row 6  (r6c4=6)
Hidden single 4 in row 7  (r7c4=4)
Hidden single 6 in row 7  (r7c7=6)
   r1c7<>6
   r7c7<>1
   r8c8<>6
Hidden single 6 in row 1  (r1c8=6)
   r1c8<>1
Hidden single 1 in row 1  (r1c7=1)
Hidden single 1 in row 7  (r7c6=1)
   r7c6<>7
   r9c6<>1
Hidden single 7 in row 7  (r7c8=7)
   r7c8<>3
   r9c8<>7
Hidden single 3 in row 7  (r7c1=3)
   r9c1<>3
Hidden single 1 in row 8  (r8c8=1)
Hidden single 6 in row 8  (r8c3=6)
Hidden single 1 in row 9  (r9c2=1)
Hidden single 3 in row 9  (r9c8=3)
Hidden single 5 in row 9  (r9c1=5)
Hidden single 7 in row 9  (r9c6=7)

Done!