Solving Script
Hell 50

Hidden single 2 in row 4  (r4c5=2)
   r4c5<>7
   r4c5<>9
   r5c5<>2
   r6c5<>2
Hidden single 5 in row 4  (r4c6=5)
   r4c6<>9
   r5c6<>5
   r6c6<>5
Hidden single 4 in row 5  (r5c6=4)
   r5c6<>1
   r5c6<>3
   r5c6<>8
   r5c6<>9
Hidden single 6 in row 8  (r8c7=6)
   r8c7<>1
   r8c7<>2
   r8c7<>5
   r8c7<>9
Hidden single 5 in row 8  (r8c9=5)
   r6c9<>5
   r8c9<>2
   r8c9<>7
   r8c9<>8
   r8c9<>9
Hidden single 5 in col 7  (r5c7=5)
   r5c1<>5
   r5c7<>2
   r5c7<>9
Hidden single 2 in col 7  (r7c7=2)
   r7c7<>9
   r7c9<>2
Hidden single 2 in col 9  (r6c9=2)
   r6c1<>2
   r6c2<>2
   r6c3<>2
   r6c9<>7
   r6c9<>9
Hidden single 7 in col 9  (r9c9=7)
   r8c8<>7
   r9c1<>7
   r9c3<>7
   r9c8<>7
   r9c9<>4
   r9c9<>8
   r9c9<>9
Hidden single 7 in row 8  (r8c3=7)
   r1c3<>7
   r3c3<>7
   r8c3<>2
   r8c3<>8
   r8c3<>9
Hidden single 2 in row 8  (r8c2=2)
   r1c2<>2
   r8c2<>8
   r8c2<>9
Hidden single 4 in row 9  (r9c7=4)
   r1c7<>4
   r3c7<>4
   r9c7<>1
   r9c7<>9
Hidden single 4 in row 1  (r1c3=4)
   r1c3<>1
   r1c3<>2
   r1c3<>8
   r1c3<>9
   r3c3<>4
Hidden single 2 in row 1  (r1c1=2)
   r1c1<>1
   r1c1<>7
   r1c1<>8
   r1c1<>9
   r5c1<>2
Hidden single 7 in row 1  (r1c5=7)
   r1c5<>1
   r1c5<>8
   r1c5<>9
   r3c4<>7
   r3c5<>7
   r6c5<>7
Hidden single 4 in row 3  (r3c9=4)
   r3c9<>8
   r3c9<>9
Hidden single 7 in row 3  (r3c1=7)
   r3c1<>1
   r3c1<>5
   r3c1<>8
   r3c1<>9
Hidden single 5 in row 3  (r3c2=5)
   r3c2<>3
   r3c2<>8
   r3c2<>9
   r6c2<>5
Hidden single 2 in row 5  (r5c3=2)
   r5c3<>1
   r5c3<>8
   r5c3<>9
Hidden single 5 in row 6  (r6c1=5)
   r6c1<>1
   r6c1<>8
   r6c1<>9
Hidden single 7 in row 6  (r6c4=7)
   r4c4<>7
   r6c4<>1
   r6c4<>6
   r6c4<>8
   r6c4<>9
Hidden single 7 in row 4  (r4c8=7)
   r4c8<>9
Hidden single 9 in row 4  (r4c4=9)
   r3c4<>9
   r5c4<>9
   r5c5<>9
   r6c5<>9
   r6c6<>9
   r7c4<>9
   r9c4<>9
Hidden single 6 in row 6  (r6c6=6)
   r2c6<>6
   r3c6<>6
   r6c6<>1
   r6c6<>8
Hidden single 6 in row 2  (r2c3=6)
   r2c3<>1
   r2c3<>8
   r2c3<>9
   r3c3<>6
Hidden single 6 in row 3  (r3c4=6)
   r3c4<>1
   r3c4<>3
   r3c4<>8
Hidden single 3 in col 2  (r2c2=3)
   r2c2<>8
   r2c2<>9
   r2c6<>3
Hidden single 3 in col 6  (r3c6=3)
   r3c5<>3
   r3c6<>1
   r3c6<>8
   r3c6<>9
Hidden single 3 in col 5  (r5c5=3)
   r5c4<>3
   r5c5<>1
   r5c5<>8
Hidden single 8 in box 3  (r2c9=8)
   r2c1<>8
   r2c6<>8
   r2c9<>9
   r7c9<>8
Hidden single 9 in col 9  (r7c9=9)
   r7c8<>9
   r8c8<>9
   r9c8<>9
Hidden single 9 in col 8  (r5c8=9)
   r5c1<>9
Naked double row 9 - 89
   r9c4<>8
   r9c8<>8
XY Wing 12 - 51 num = 8
   r6c2<>8
Hidden single 8 in col 2  (r1c2=8)
   r1c2<>9
   r1c6<>8
   r3c3<>8
Hidden single 8 in row 3  (r3c5=8)
   r3c5<>1
   r3c5<>9
   r6c5<>8
   r8c5<>8
Hidden single 8 in row 6  (r6c3=8)
   r5c1<>8
   r6c3<>1
   r6c3<>9
   r9c3<>8
Hidden single 8 in row 5  (r5c4=8)
   r5c4<>1
   r7c4<>8
Hidden single 1 in row 5  (r5c1=1)
   r2c1<>1
Hidden single 1 in row 2  (r2c6=1)
   r1c6<>1
   r2c6<>9
   r8c6<>1
Hidden single 1 in row 1  (r1c7=1)
   r1c7<>9
   r3c7<>1
Hidden single 9 in row 1  (r1c6=9)
   r8c6<>9
Hidden single 9 in row 2  (r2c1=9)
   r3c3<>9
   r9c1<>9
Hidden single 1 in row 3  (r3c3=1)
Hidden single 9 in row 3  (r3c7=9)
Hidden single 1 in row 6  (r6c5=1)
   r8c5<>1
Hidden single 9 in row 6  (r6c2=9)
Hidden single 8 in row 7  (r7c8=8)
   r7c8<>3
   r8c8<>8
Hidden single 3 in row 7  (r7c4=3)
   r9c4<>3
Hidden single 1 in row 8  (r8c8=1)
   r9c8<>1
Hidden single 8 in row 8  (r8c6=8)
Hidden single 9 in row 8  (r8c5=9)
Hidden single 1 in row 9  (r9c4=1)
Hidden single 3 in row 9  (r9c8=3)
Hidden single 8 in row 9  (r9c1=8)
Hidden single 9 in row 9  (r9c3=9)