Solving Script
Hell 19
Naked single 9 row 7 column 8  (r7c8=9)
   r2c8<>9
   r7c4<>9
   r7c7<>9
   r7c9<>9
   r8c7<>9
   r8c8<>9
   r8c9<>9
   r9c9<>9
Naked single 6 row 7 column 7  (r7c7=6)
   r4c7<>6
   r5c7<>6
   r7c1<>6
   r7c9<>6
   r8c7<>6
   r8c9<>6
Naked single 7 row 7 column 9  (r7c9=7)
   r7c4<>7
   r8c9<>7
Naked single 9 row 9 column 4  (r9c4=9)
   r4c4<>9
   r8c4<>9
   r8c6<>9
   r9c3<>9
Hidden single 4 in row 1  (r1c1=4)
   r1c1<>1
   r1c1<>3
   r1c1<>5
   r2c1<>4
Hidden single 7 in row 2  (r2c1=7)
   r2c1<>1
   r2c1<>2
   r2c1<>3
   r2c1<>5
   r2c1<>6
Hidden single 7 in row 8  (r8c4=7)
   r8c4<>1
   r8c4<>8
Hidden single 9 in row 8  (r8c3=9)
   r8c3<>1
   r8c3<>2
   r8c3<>3
   r8c3<>6
Hidden single 5 in row 9  (r9c9=5)
   r1c9<>5
   r2c9<>5
   r8c7<>5
   r8c9<>5
   r9c9<>2
   r9c9<>3
Naked single 3 row 1 column 9  (r1c9=3)
   r1c6<>3
   r1c7<>3
   r2c7<>3
   r2c9<>3
   r3c9<>3
   r8c9<>3
Naked single 1 row 1 column 6  (r1c6=1)
   r1c7<>1
   r2c4<>1
   r2c5<>1
   r2c6<>1
   r3c6<>1
   r6c6<>1
   r8c6<>1
Naked single 5 row 1 column 7  (r1c7=5)
   r2c7<>5
Hidden single 5 in row 2  (r2c3=5)
   r2c3<>1
   r2c3<>2
   r2c3<>3
   r2c3<>6
   r6c3<>5
Hidden single 3 in row 2  (r2c6=3)
   r2c6<>6
   r2c6<>8
   r3c6<>3
Hidden single 5 in col 1  (r4c1=5)
   r4c1<>2
   r4c1<>6
   r4c1<>8
   r4c5<>5
   r4c6<>5
Hidden single 9 in col 6  (r4c6=9)
   r4c6<>6
   r4c6<>8
   r4c7<>9
Naked single 2 row 4 column 7  (r4c7=2)
   r2c7<>2
   r4c2<>2
   r4c5<>2
   r5c7<>2
   r5c9<>2
   r6c8<>2
   r6c9<>2
   r8c7<>2
Naked single 9 row 5 column 7  (r5c7=9)
   r2c7<>9
   r5c9<>9
Naked single 1 row 2 column 7  (r2c7=1)
   r2c2<>1
Naked single 3 row 8 column 7  (r8c7=3)
   r8c1<>3
Hidden single 9 in row 2  (r2c9=9)
   r2c9<>2
   r2c9<>8
Naked double row 8 - 24
   r8c1<>2
   r8c2<>2
Naked double col 5 - 48
   r5c5<>8
   r6c5<>4
   r6c5<>8
   r8c5<>8
Locked candidate (4) in box 6
   r6c4<>4
Locked candidate (2) in col 2
   r3c1<>2
   r3c3<>2
X-wing of 6's  (r24 c24)
   r3c2<>6
   r6c4<>6
   r8c2<>6
Hidden single 6 in row 8  (r8c1=6)
   r3c1<>6
   r5c1<>6
   r8c1<>1
   r8c1<>8
Naked double col 4 - 18
   r2c4<>8
   r4c4<>8
SKYSCRA rows 48 cols 2526 match col 2 num 8
   r6c6<>8
SKYSCRA cols 58 rows 2426 match row 2 num 8
   r6c4<>8
Naked single 1 row 6 column 4  (r6c4=1)
   r5c5<>1
   r6c3<>1
   r6c5<>1
   r7c4<>1
Naked single 2 row 5 column 5  (r5c5=2)
   r5c1<>2
   r5c3<>2
   r6c5<>2
Naked single 5 row 6 column 5  (r6c5=5)
   r6c6<>5
   r8c5<>5
Naked single 6 row 6 column 6  (r6c6=6)
   r3c6<>6
   r4c4<>6
   r6c3<>6
   r6c9<>6
Naked single 8 row 3 column 6  (r3c6=8)
   r2c5<>8
   r3c9<>8
   r8c6<>8
Naked single 4 row 2 column 5  (r2c5=4)
   r2c4<>4
   r4c5<>4
Naked single 6 row 2 column 4  (r2c4=6)
   r2c2<>6
Naked single 2 row 2 column 2  (r2c2=2)
   r2c8<>2
   r3c2<>2
Naked single 8 row 2 column 8  (r2c8=8)
   r6c8<>8
Naked single 1 row 3 column 2  (r3c2=1)
   r3c1<>1
   r3c3<>1
   r8c2<>1
Naked single 3 row 3 column 1  (r3c1=3)
   r3c3<>3
   r9c1<>3
Naked single 6 row 3 column 3  (r3c3=6)
   r5c3<>6
Naked single 2 row 3 column 9  (r3c9=2)
   r8c9<>2
Naked single 4 row 4 column 4  (r4c4=4)
Naked single 8 row 4 column 5  (r4c5=8)
   r4c2<>8
Naked single 6 row 4 column 2  (r4c2=6)
Naked single 1 row 5 column 3  (r5c3=1)
   r5c1<>1
Naked single 8 row 5 column 1  (r5c1=8)
   r5c9<>8
   r7c1<>8
Naked single 6 row 5 column 9  (r5c9=6)
Naked single 2 row 6 column 3  (r6c3=2)
   r9c3<>2
Naked single 4 row 6 column 8  (r6c8=4)
   r6c9<>4
   r8c8<>4
Naked single 8 row 6 column 9  (r6c9=8)
Naked single 1 row 7 column 1  (r7c1=1)
Naked single 8 row 7 column 4  (r7c4=8)
Naked single 8 row 8 column 2  (r8c2=8)
Naked single 1 row 8 column 5  (r8c5=1)
Naked single 5 row 8 column 6  (r8c6=5)
Naked single 2 row 8 column 8  (r8c8=2)
Naked single 4 row 8 column 9  (r8c9=4)
Naked single 2 row 9 column 1  (r9c1=2)
Naked single 3 row 9 column 3  (r9c3=3)