R2C5 is the only square in row 2 that can be <8>

R2C9 is the only square in row 2 that can be <6>

R3C2 is the only square in row 3 that can be <5>

R4C1 is the only square in row 4 that can be <6>

R6C9 is the only square in row 6 that can be <8>

R8C7 is the only square in row 8 that can be <8>

R7C4 is the only square in row 7 that can be <8>

R7C5 is the only square in row 7 that can be <5>

R5C9 is the only square in row 5 that can be <5>

R4C4 is the only square in row 4 that can be <5>

R8C1 is the only square in row 8 that can be <5>

R9C6 is the only square in row 9 that can be <6>

R3C5 is the only square in row 3 that can be <6>

R7C8 is the only square in row 7 that can be <6>

Squares R7C2 and R7C6 in row 7 form a simple locked pair. These 2 squares both contain the 2 possibilities <79>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R7C3 - removing <79> from <1479> leaving <14>

Squares R5C7 and R7C7 in column 7 form a simple locked pair. These 2 squares both contain the 2 possibilities <14>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R3C7 - removing <4> from <234> leaving <23>

Squares R2C7 and R3C7 in block 3 form a simple locked pair. These 2 squares both contain the 2 possibilities <23>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R1C9 - removing <3> from <347> leaving <47>

R3C8 - removing <3> from <347> leaving <47>

Intersection of row 1 with block 2. The value <3> only appears in one or more of squares R1C4, R1C5 and R1C6 of row 1. These squares are the ones that intersect with block 2. Thus, the other (non-intersecting) squares of block 2 cannot contain this value.

R3C4 - removing <3> from <123> leaving <12>

R3C6 - removing <3> from <134> leaving <14>

Intersection of row 5 with block 4. The value <9> only appears in one or more of squares R5C1, R5C2 and R5C3 of row 5. These squares are the ones that intersect with block 4. Thus, the other (non-intersecting) squares of block 4 cannot contain this value.

R6C1 - removing <9> from <12479> leaving <1247>

R6C2 - removing <9> from <279> leaving <27>

R7C2 is the only square in column 2 that can be <9>

R7C6 can only be <7>

R9C1 can only be <4>

R8C5 can only be <3>

R8C9 can only be <1>

R9C4 can only be <9>

R8C3 can only be <7>

R7C7 can only be <4>

R9C9 can only be <3>

R7C3 can only be <1>

R5C7 can only be <1>

R3C3 can only be <3>

R3C7 can only be <2>

R2C3 can only be <9>

R3C4 can only be <1>

R2C7 can only be <3>

R2C1 can only be <2>

R5C3 can only be <4>

R3C6 can only be <4>

R3C8 can only be <7>

R1C6 can only be <3>

R1C9 can only be <4>

R5C5 can only be <7>

R5C1 can only be <9>

R1C4 can only be <2>

R4C6 can only be <1>

R4C9 can only be <7>

R1C1 can only be <7>

R6C6 can only be <9>

R4C2 can only be <2>

R6C1 can only be <1>

R6C4 can only be <3>

R4C5 can only be <4>

R6C2 can only be <7>

R4C8 can only be <3>

R6C5 can only be <2>

R6C8 can only be <4>