Solving Script
hell 17

Hidden single 4 in row 4  (r4c4=4)
   r3c4<>4
   r4c4<>1
   r6c5<>4
   r6c6<>4
   r7c4<>4
Hidden single 4 in row 6  (r6c2=4)
   r6c2<>2
   r6c2<>3
   r6c2<>6
   r6c2<>7
   r6c2<>8
Hidden single 9 in col 1  (r3c1=9)
   r1c3<>9
   r3c1<>1
   r3c1<>2
   r3c1<>5
   r3c3<>9
   r3c4<>9
   r3c6<>9
Hidden single 9 in row 1  (r1c6=9)
   r1c6<>3
   r1c6<>4
   r1c6<>5
   r6c6<>9
   r7c6<>9
   r8c6<>9
   r9c6<>9
Hidden single 9 in row 6  (r6c5=9)
   r6c5<>2
   r6c5<>8
   r7c5<>9
   r8c5<>9
   r9c5<>9
Hidden single 4 in box 2  (r3c6=4)
   r3c6<>3
   r3c6<>5
   r3c6<>8
   r3c8<>4
   r3c9<>4
   r7c6<>4
   r8c6<>4
Naked single 2 row 6 column 1  (r6c1=2)
   r4c1<>2
   r5c1<>2
   r5c2<>2
   r6c6<>2
   r6c7<>2
Hidden single 2 in row 4  (r4c7=2)
   r1c7<>2
   r3c7<>2
   r4c7<>6
   r5c8<>2
Naked double col 7 - 36
   r3c7<>3
Naked double box 4 - 15
   r4c3<>1
   r4c3<>5
   r5c2<>1
   r5c2<>5
   r5c3<>1
   r5c3<>5
Hidden single 1 in row 4  (r4c1=1)
   r4c1<>5
   r5c1<>1
Hidden single 5 in row 4  (r4c9=5)
   r1c9<>5
   r2c9<>5
   r3c9<>5
   r4c9<>6
   r5c8<>5
Hidden single 6 in row 4  (r4c3=6)
   r1c3<>6
   r5c2<>6
   r5c3<>6
   r6c3<>6
Hidden single 5 in row 5  (r5c1=5)
Locked candidate (5) in box 2
   r2c2<>5
   r2c8<>5
Naked double box 3 - 36
   r1c8<>3
   r1c8<>6
   r1c9<>3
   r1c9<>6
   r2c9<>3
   r2c9<>6
   r3c8<>3
   r3c9<>3
Naked single 4 row 1 column 9  (r1c9=4)
   r1c8<>4
   r7c9<>4
Naked double box 3 - 18
   r3c9<>1
   r3c9<>8
Naked single 7 row 3 column 9  (r3c9=7)
   r3c8<>7
   r6c9<>7
Hidden single 7 in row 6  (r6c3=7)
   r5c2<>7
   r5c3<>7
   r6c3<>3
   r6c3<>8
   r8c3<>7
Hidden single 7 in row 5  (r5c8=7)
   r5c8<>3
   r5c8<>6
Hidden single 6 in row 5  (r5c6=6)
   r5c6<>1
   r5c6<>2
   r5c6<>8
   r6c6<>6
Hidden single 1 in row 5  (r5c4=1)
   r5c4<>8
   r7c4<>1
   r9c4<>1
Hidden single 2 in row 5  (r5c5=2)
   r5c5<>8
   r7c5<>2
Hidden single 8 in row 6  (r6c6=8)
   r2c6<>8
   r7c6<>8
   r8c6<>8
   r9c6<>8
Hidden single 2 in row 7  (r7c6=2)
   r7c6<>1
   r7c6<>3
   r7c6<>5
UR4-------- 18 32 slash 5 pair = 25 
   r1c2<>5
   r3c2<>5
Locked candidate (5) in box 1
   r7c3<>5
   r8c3<>5
HR(hidden rectangle) 95 82 digit = 8
   r8c2<>8
ER_Row1 = 2 Row2 = 8 col1 = 9 col2 = 2 digit = 1 target = 82 hinge = 89
   r8c2<>1
ER_Row1 = 2 Row2 = 8 col1 = 9 col2 = 5 digit = 8 target = 85 hinge = 89
   r8c5<>8
Finned Fish 22 - 29 - 72 - 79 fin 73 - 1 col 2
   r9c2<>1
Naked double row 9 - 78
   r9c4<>8
   r9c9<>8
ER_Row1 = 2 Row2 = 7 col1 = 5 col2 = 9 digit = 8 target = 79 hinge = 75
   r7c9<>8
Hidden single 8 in col 9  (r2c9=8)
   r2c5<>8
   r2c9<>1
   r3c7<>8
Hidden single 1 in row 2  (r2c2=1)
   r2c2<>3
   r2c2<>6
   r3c2<>1
   r3c3<>1
   r7c2<>1
Hidden single 6 in row 2  (r2c8=6)
   r1c7<>6
   r2c8<>3
   r9c8<>6
Hidden single 6 in row 1  (r1c2=6)
   r1c2<>2
   r1c2<>3
Hidden single 2 in row 1  (r1c8=2)
   r1c8<>5
   r3c8<>2
Hidden single 5 in row 1  (r1c3=5)
   r1c3<>3
   r3c3<>5
Hidden single 3 in row 1  (r1c7=3)
   r6c7<>3
Hidden single 3 in row 2  (r2c6=3)
   r2c6<>5
   r3c4<>3
   r9c6<>3
Hidden single 5 in row 2  (r2c5=5)
   r7c5<>5
   r8c5<>5
Hidden single 1 in row 3  (r3c7=1)
   r8c7<>1
Hidden single 2 in row 3  (r3c2=2)
   r3c2<>3
Hidden single 3 in row 3  (r3c3=3)
   r5c3<>3
Hidden single 5 in row 3  (r3c8=5)
Hidden single 8 in row 3  (r3c4=8)
   r7c4<>8
Hidden single 3 in row 5  (r5c2=3)
   r5c2<>8
Hidden single 8 in row 5  (r5c3=8)
   r7c3<>8
   r8c3<>8
Hidden single 3 in row 6  (r6c9=3)
   r6c9<>6
   r7c9<>3
   r9c9<>3
Hidden single 6 in row 6  (r6c7=6)
Hidden single 5 in row 7  (r7c2=5)
   r7c2<>8
   r8c2<>5
Hidden single 8 in row 7  (r7c5=8)
   r7c5<>4
   r9c5<>8
Hidden single 4 in row 7  (r7c8=4)
   r7c8<>3
   r7c8<>9
   r8c8<>4
Hidden single 3 in row 7  (r7c4=3)
   r7c4<>9
   r9c4<>3
Hidden single 9 in row 7  (r7c3=9)
   r7c3<>1
   r8c3<>9
Hidden single 1 in row 7  (r7c9=1)
   r9c9<>1
Hidden single 4 in row 8  (r8c5=4)
   r8c5<>7
Hidden single 5 in row 8  (r8c6=5)
   r8c6<>1
Hidden single 1 in row 8  (r8c3=1)
Hidden single 7 in row 8  (r8c2=7)
   r9c2<>7
Hidden single 8 in row 8  (r8c7=8)
Hidden single 9 in row 8  (r8c8=9)
   r9c8<>9
Hidden single 1 in row 9  (r9c6=1)
Hidden single 3 in row 9  (r9c8=3)
Hidden single 6 in row 9  (r9c9=6)
Hidden single 7 in row 9  (r9c5=7)
Hidden single 8 in row 9  (r9c2=8)
Hidden single 9 in row 9  (r9c4=9)