Solving Script
Hell 51

Hidden single 9 in row 8  (r8c1=9)
   r5c1<>9
   r6c1<>9
   r8c1<>4
   r8c1<>6
   r8c1<>8
Hidden single 3 in row 9  (r9c8=3)
   r3c8<>3
   r7c7<>3
   r9c8<>5
   r9c8<>6
   r9c8<>8
Hidden single 3 in row 7  (r7c2=3)
   r7c2<>1
   r7c2<>4
   r7c2<>6
   r7c2<>8
Hidden single 3 in col 7  (r2c7=3)
   r2c4<>3
   r2c6<>3
   r2c7<>5
   r2c7<>6
   r2c7<>7
Hidden single 5 in row 2  (r2c9=5)
   r2c9<>1
   r2c9<>7
   r4c9<>5
   r8c9<>5
   r9c9<>5
Hidden single 5 in row 9  (r9c5=5)
   r5c5<>5
   r8c6<>5
   r9c5<>1
   r9c5<>6
   r9c5<>8
Hidden single 5 in row 8  (r8c8=5)
   r4c8<>5
   r5c8<>5
   r6c8<>5
   r8c8<>6
   r8c8<>7
   r8c8<>8
Hidden single 5 in row 4  (r4c7=5)
   r4c7<>2
   r4c7<>9
   r5c7<>5
   r6c7<>5
Hidden single 6 in col 8  (r3c8=6)
   r1c7<>6
   r3c1<>6
   r3c3<>6
   r3c5<>6
   r3c6<>6
   r3c8<>1
   r3c8<>7
Hidden single 6 in col 7  (r7c7=6)
   r7c1<>6
   r7c5<>6
   r7c6<>6
   r7c7<>2
   r7c7<>7
Hidden single 6 in col 5  (r1c5=6)
   r1c1<>6
   r1c2<>6
   r1c5<>1
   r1c5<>8
   r1c5<>9
   r1c6<>6
   r2c6<>6
Hidden single 6 in col 6  (r8c6=6)
   r8c3<>6
   r8c6<>4
   r8c6<>7
   r8c6<>8
Hidden single 7 in col 8  (r5c8=7)
   r5c7<>7
   r5c8<>1
   r5c8<>8
Hidden single 7 in col 7  (r1c7=7)
   r1c1<>7
   r1c6<>7
   r1c7<>9
   r1c9<>7
   r3c9<>7
Hidden single 9 in row 1  (r1c9=9)
   r1c9<>1
   r3c9<>9
   r4c9<>9
Hidden single 1 in col 8  (r6c8=1)
   r6c1<>1
   r6c2<>1
   r6c8<>8
Hidden single 8 in col 8  (r4c8=8)
   r4c2<>8
   r4c3<>8
   r4c4<>8
   r4c9<>8
Hidden single 1 in col 9  (r3c9=1)
   r3c1<>1
   r3c3<>1
   r3c4<>1
   r3c5<>1
Hidden single 1 in col 5  (r7c5=1)
   r7c1<>1
   r7c4<>1
   r7c5<>8
   r9c4<>1
Hidden single 1 in col 4  (r2c4=1)
   r2c1<>1
   r2c2<>1
   r2c4<>7
   r2c4<>8
Hidden single 8 in col 5  (r5c5=8)
   r5c1<>8
   r5c2<>8
   r5c3<>8
   r5c4<>8
   r5c5<>9
   r5c6<>8
   r6c6<>8
Hidden single 9 in col 5  (r3c5=9)
   r3c4<>9
Hidden single 4 in col 9  (r4c9=4)
   r4c2<>4
   r4c3<>4
   r4c9<>2
Naked double row 9 - 28
   r9c1<>8
   r9c3<>8
Hidden single 8 in col 3  (r8c3=8)
   r7c1<>8
   r8c3<>4
   r8c4<>8
   r8c9<>8
Hidden single 4 in row 8  (r8c4=4)
   r3c4<>4
   r7c4<>4
   r7c6<>4
   r8c4<>7
Hidden single 4 in row 7  (r7c1=4)
   r1c1<>4
   r3c1<>4
   r5c1<>4
Hidden single 7 in row 8  (r8c9=7)
   r7c9<>7
Naked Triplets 689 in column 2
   r1c2<>8
   r5c2<>9
Locked candidate (8) in box 2
   r7c6<>8
XY Wing 22 - 91 num = 6
   r2c1<>6
Hidden single 6 in row 2  (r2c2=6)
   r2c2<>8
   r4c2<>6
Hidden single 6 in row 4  (r4c3=6)
   r4c3<>2
   r9c3<>6
Hidden single 2 in row 4  (r4c4=2)
   r4c4<>9
   r5c4<>2
   r5c6<>2
   r6c6<>2
   r7c4<>2
   r9c4<>2
Hidden single 9 in row 4  (r4c2=9)
   r6c2<>9
Hidden single 9 in row 6  (r6c7=9)
   r5c7<>9
   r6c7<>2
Hidden single 9 in row 5  (r5c4=9)
   r5c4<>3
Hidden single 3 in row 5  (r5c6=3)
   r3c6<>3
   r5c6<>5
Hidden single 3 in row 3  (r3c4=3)
   r3c4<>7
Hidden single 5 in row 5  (r5c1=5)
   r5c1<>1
   r5c1<>2
   r6c1<>5
Hidden single 2 in row 6  (r6c1=2)
   r3c1<>2
   r5c3<>2
   r6c1<>8
Hidden single 2 in row 3  (r3c3=2)
   r3c3<>4
Hidden single 4 in row 3  (r3c6=4)
   r1c6<>4
   r3c6<>7
Hidden single 4 in row 1  (r1c2=4)
   r1c2<>1
   r5c2<>4
Hidden single 1 in row 1  (r1c1=1)
   r1c1<>8
   r9c1<>1
Hidden single 8 in row 1  (r1c6=8)
   r2c6<>8
Hidden single 8 in row 2  (r2c1=8)
   r2c1<>7
Hidden single 7 in row 2  (r2c6=7)
   r7c6<>7
Hidden single 7 in row 3  (r3c1=7)
Hidden single 2 in row 5  (r5c7=2)
Hidden single 4 in row 5  (r5c3=4)
   r5c3<>1
Hidden single 1 in row 5  (r5c2=1)
Hidden single 5 in row 6  (r6c6=5)
Hidden single 8 in row 6  (r6c2=8)
Hidden single 7 in row 7  (r7c4=7)
   r7c4<>8
Hidden single 8 in row 7  (r7c9=8)
   r7c9<>2
   r9c9<>8
Hidden single 2 in row 7  (r7c6=2)
Hidden single 1 in row 9  (r9c3=1)
Hidden single 2 in row 9  (r9c9=2)
Hidden single 6 in row 9  (r9c1=6)
Hidden single 8 in row 9  (r9c4=8)