Solving Script
Hell 40

Hidden single 5 in row 6  (r6c3=5)
   r5c3<>5
   r6c3<>2
   r6c3<>3
   r6c3<>6
   r6c3<>7
   r6c3<>8
Hidden single 7 in row 6  (r6c2=7)
   r6c2<>3
   r6c2<>8
   r9c2<>7
Hidden single 3 in row 6  (r6c7=3)
   r1c7<>3
   r3c7<>3
   r4c7<>3
   r6c7<>2
   r6c7<>6
   r6c7<>8
   r8c7<>3
Hidden single 8 in row 6  (r6c6=8)
   r4c6<>8
   r6c6<>2
   r6c6<>6
   r7c6<>8
   r9c6<>8
Hidden single 6 in row 6  (r6c4=6)
   r4c4<>6
   r4c6<>6
   r5c4<>6
   r6c4<>2
   r7c4<>6
   r8c4<>6
Hidden single 2 in row 6  (r6c1=2)
   r4c1<>2
   r4c3<>2
   r5c1<>2
   r5c3<>2
Hidden single 2 in col 3  (r1c3=2)
   r1c3<>8
   r1c7<>2
   r1c8<>2
Hidden single 7 in col 3  (r9c3=7)
   r9c3<>1
   r9c3<>3
   r9c4<>7
   r9c6<>7
Naked Triplets 249 in row 4
   r4c2<>4
   r4c2<>9
   r4c7<>2
Hidden double row 9 - 25
   r9c4<>3
   r9c4<>9
   r9c6<>1
   r9c6<>9
Locked candidate (4) in box 1
   r5c2<>4
Locked candidate (3) in box 2
   r7c5<>3
   r8c5<>3
   r9c5<>3
Locked candidate (2) in box 6
   r5c4<>2
ER_Row1 = 9 Row2 = 2 col1 = 2 col2 = 9 digit = 1 target = 29 hinge = 22
   r2c9<>1
XY-Chain 95 85 digit = 9
   r7c4<>9
   r7c5<>9
   r7c6<>9
   r8c4<>9
   r8c6<>9
Locked candidate (9) in box 8
   r1c5<>9
XY-Chain 71 54 digit = 9
   r5c1<>9
XY-Chain 41 74 digit = 4
   r4c4<>4
XY-Chain 88 85 digit = 6
   r8c6<>6
   r8c7<>6
W Wing: twin 19 r1c1 71 r2c2 87 Link1 92 Link2 99 digit 1 remove 9
   r7c9<>9
Hidden single 9 in row 7  (r7c1=9)
   r4c1<>9
   r7c1<>1
   r9c2<>9
Hidden single 1 in col 1  (r5c1=1)
   r5c1<>4
   r5c2<>1
   r5c3<>1
Hidden single 4 in row 5  (r5c4=4)
   r2c4<>4
   r4c6<>4
   r5c4<>9
   r7c4<>4
Hidden single 4 in row 4  (r4c1=4)
Hidden single 9 in row 5  (r5c2=9)
   r5c2<>8
Naked single 3 row 7 column 4  (r7c4=3)
   r7c3<>3
   r7c9<>3
   r8c4<>3
Hidden single 3 in row 8  (r8c8=3)
   r1c8<>3
   r3c8<>3
   r8c8<>6
   r9c8<>3
   r9c9<>3
Hidden single 6 in row 8  (r8c5=6)
   r1c5<>6
   r3c5<>6
   r7c5<>6
   r7c6<>6
   r8c5<>9
Hidden single 6 in row 7  (r7c9=6)
   r1c9<>6
   r3c9<>6
   r5c9<>6
   r7c9<>1
   r7c9<>8
Hidden single 8 in row 7  (r7c5=8)
   r7c5<>4
   r9c5<>8
Hidden single 4 in row 7  (r7c6=4)
   r1c6<>4
   r2c6<>4
   r3c6<>4
   r7c6<>1
Hidden single 4 in row 2  (r2c8=4)
   r1c8<>4
   r2c8<>5
   r2c8<>8
   r3c8<>4
Hidden single 1 in row 7  (r7c3=1)
   r2c3<>1
   r9c2<>1
Hidden single 1 in row 2  (r2c7=1)
   r2c7<>7
   r2c7<>8
   r2c7<>9
   r3c7<>1
   r3c9<>1
   r8c7<>1
Hidden single 1 in row 3  (r3c2=1)
   r3c2<>4
Hidden single 4 in row 3  (r3c5=4)
   r1c5<>4
   r3c5<>3
Hidden single 4 in row 1  (r1c2=4)
   r1c2<>8
Hidden single 3 in row 3  (r3c9=3)
   r1c9<>3
   r3c9<>5
Hidden single 3 in row 1  (r1c5=3)
Hidden single 1 in row 8  (r8c6=1)
   r8c6<>7
Hidden single 7 in row 8  (r8c4=7)
   r2c4<>7
Hidden single 7 in row 2  (r2c6=7)
   r1c6<>7
   r2c6<>5
   r2c6<>9
Hidden single 7 in row 1  (r1c7=7)
   r1c7<>6
   r1c7<>8
   r1c7<>9
Hidden single 9 in row 8  (r8c7=9)
   r9c9<>9
Hidden single 1 in row 9  (r9c9=1)
   r9c9<>8
Hidden single 3 in row 9  (r9c2=3)
   r4c2<>3
Hidden single 3 in row 4  (r4c3=3)
   r4c3<>6
   r4c3<>8
Hidden single 6 in row 4  (r4c7=6)
   r3c7<>6
   r4c7<>8
   r5c7<>6
   r5c8<>6
Hidden single 8 in row 4  (r4c2=8)
   r5c3<>8
Hidden single 6 in row 5  (r5c3=6)
Hidden single 8 in row 9  (r9c8=8)
   r1c8<>8
   r5c8<>8
Hidden single 8 in row 1  (r1c9=8)
   r1c9<>9
   r2c9<>8
   r5c9<>8
Hidden single 9 in row 1  (r1c6=9)
   r1c6<>6
   r2c4<>9
   r4c6<>9
Hidden single 6 in row 1  (r1c8=6)
   r3c8<>6
Hidden single 8 in row 2  (r2c3=8)
Hidden single 9 in row 2  (r2c9=9)
   r2c9<>5
Hidden single 5 in row 2  (r2c4=5)
   r3c6<>5
   r9c4<>5
Hidden single 5 in row 3  (r3c8=5)
   r3c8<>2
   r5c8<>5
Hidden single 2 in row 3  (r3c7=2)
   r5c7<>2
Hidden single 6 in row 3  (r3c6=6)
Hidden single 9 in row 4  (r4c4=9)
   r4c4<>2
Hidden single 2 in row 4  (r4c6=2)
   r9c6<>2
Hidden single 2 in row 5  (r5c8=2)
Hidden single 5 in row 5  (r5c9=5)
Hidden single 8 in row 5  (r5c7=8)
Hidden single 2 in row 9  (r9c4=2)
Hidden single 5 in row 9  (r9c6=5)
Hidden single 9 in row 9  (r9c5=9)