Solving Script
Hell 9

Hidden single 7 in row 5  (r5c1=7)
   r5c1<>1
   r5c1<>3
   r5c1<>8
   r5c1<>9
   r7c1<>7
   r8c1<>7
   r9c1<>7
Hidden single 9 in row 5  (r5c7=9)
   r4c7<>9
   r5c7<>1
   r5c7<>5
   r5c7<>8
Hidden single 6 in row 6  (r6c6=6)
   r1c6<>6
   r3c6<>6
   r4c5<>6
   r4c6<>6
   r6c6<>2
   r6c6<>5
   r9c6<>6
Hidden single 5 in row 6  (r6c9=5)
   r3c9<>5
   r5c8<>5
   r5c9<>5
   r6c9<>3
   r6c9<>8
   r7c9<>5
Hidden single 4 in col 1  (r1c1=4)
   r1c1<>1
   r1c1<>3
   r1c1<>6
   r1c1<>8
   r1c1<>9
   r1c4<>4
   r1c6<>4
Hidden single 5 in col 1  (r3c1=5)
   r3c1<>1
   r3c1<>3
   r3c1<>6
   r3c1<>8
   r3c1<>9
   r3c7<>5
Hidden single 4 in col 9  (r9c9=4)
   r9c4<>4
   r9c5<>4
   r9c6<>4
   r9c9<>1
   r9c9<>7
   r9c9<>8
Hidden single 8 in row 9  (r9c8=8)
   r1c8<>8
   r2c8<>8
   r4c8<>8
   r5c8<>8
   r9c8<>1
   r9c8<>2
Hidden single 1 in box 9  (r8c7=1)
   r1c7<>1
   r2c7<>1
   r3c7<>1
   r4c7<>1
   r8c1<>1
   r8c3<>1
   r8c7<>2
   r8c7<>5
   r8c7<>7
Naked single 4 row 4 column 6  (r4c6=4)
   r4c5<>4
   r8c6<>4
Naked single 7 row 7 column 9  (r7c9=7)
   r3c9<>7
   r7c2<>7
   r7c7<>7
Hidden single 7 in col 2  (r9c2=7)
   r9c2<>1
   r9c2<>2
   r9c2<>6
   r9c2<>9
   r9c5<>7
   r9c6<>7
Hidden single 1 in row 9  (r9c1=1)
   r4c1<>1
   r9c1<>6
   r9c1<>9
Hidden single 6 in col 1  (r7c1=6)
   r7c1<>3
   r7c1<>9
   r7c2<>6
   r7c4<>6
Hidden single 9 in col 1  (r4c1=9)
   r4c1<>3
   r4c1<>8
   r4c3<>9
Hidden single 8 in col 1  (r6c1=8)
   r4c3<>8
   r6c1<>3
   r6c3<>8
Hidden single 3 in col 1  (r8c1=3)
   r7c2<>3
   r8c3<>3
   r8c4<>3
   r8c5<>3
Hidden single 3 in row 7  (r7c4=3)
   r5c4<>3
   r7c4<>5
   r7c4<>9
Hidden single 9 in row 7  (r7c2=9)
   r1c2<>9
   r3c2<>9
   r7c2<>2
Hidden single 2 in col 2  (r6c2=2)
   r6c2<>3
   r6c3<>2
Hidden single 3 in row 6  (r6c3=3)
   r3c3<>3
   r4c3<>3
Hidden single 2 in col 3  (r8c3=2)
   r8c5<>2
   r8c6<>2
Hidden single 9 in col 3  (r3c3=9)
   r3c3<>1
   r3c3<>8
   r3c6<>9
Hidden single 8 in col 3  (r2c3=8)
   r2c3<>1
   r2c4<>8
   r2c5<>8
   r2c7<>8
Hidden single 1 in col 3  (r4c3=1)
   r4c8<>1
ER_Row1 = 4 Row2 = 1 col1 = 5 col2 = 7 digit = 8 target = 17 hinge = 15
   r1c7<>8
XY-Chain 36 22 digit = 1
   r3c2<>1
XY-Chain 95 24 digit = 6
   r2c5<>6
   r3c5<>6
   r9c4<>6
Hidden single 6 in row 9  (r9c5=6)
   r9c5<>2
Hidden single 2 in row 9  (r9c6=2)
   r5c6<>2
   r9c6<>9
Hidden single 2 in row 5  (r5c5=2)
   r5c5<>3
   r5c5<>8
Hidden single 9 in row 9  (r9c4=9)
   r1c4<>9
Hidden single 9 in row 1  (r1c6=9)
   r1c6<>1
Hidden single 3 in col 5  (r4c5=3)
   r4c5<>8
   r4c8<>3
Hidden single 8 in row 4  (r4c7=8)
   r3c7<>8
   r4c7<>6
   r5c9<>8
Hidden single 6 in row 4  (r4c8=6)
   r1c8<>6
   r2c8<>6
Hidden single 8 in row 5  (r5c4=8)
   r1c4<>8
   r5c4<>5
Hidden single 8 in row 1  (r1c9=8)
   r1c9<>1
   r1c9<>3
   r3c9<>8
Hidden single 8 in row 3  (r3c5=8)
   r3c5<>7
Hidden single 5 in row 5  (r5c6=5)
   r8c6<>5
Hidden single 5 in row 8  (r8c4=5)
   r8c4<>4
Hidden single 4 in row 8  (r8c5=4)
   r2c5<>4
   r8c5<>7
Hidden single 4 in row 2  (r2c4=4)
   r2c4<>6
Hidden single 7 in row 8  (r8c6=7)
   r3c6<>7
Hidden single 7 in row 3  (r3c7=7)
   r2c7<>7
   r3c7<>6
Hidden single 7 in row 2  (r2c5=7)
Hidden single 6 in row 3  (r3c2=6)
   r1c2<>6
   r2c2<>6
   r3c2<>3
Hidden single 6 in row 2  (r2c7=6)
   r1c7<>6
   r2c7<>5
Hidden single 6 in row 1  (r1c4=6)
Hidden single 5 in row 2  (r2c8=5)
   r2c8<>1
   r7c8<>5
Hidden single 1 in row 2  (r2c2=1)
   r1c2<>1
Hidden single 1 in row 1  (r1c8=1)
   r1c8<>2
   r1c8<>3
   r3c9<>1
   r5c8<>1
Hidden single 2 in row 1  (r1c7=2)
   r7c7<>2
Hidden single 3 in row 1  (r1c2=3)
Hidden single 1 in row 3  (r3c6=1)
Hidden single 3 in row 3  (r3c9=3)
   r5c9<>3
Hidden single 1 in row 5  (r5c9=1)
Hidden single 3 in row 5  (r5c8=3)
Hidden single 2 in row 7  (r7c8=2)
Hidden single 5 in row 7  (r7c7=5)

Done!