R3C8 can only be <5>

R1C1 is the only square in row 1 that can be <2>

R1C8 is the only square in row 1 that can be <3>

R3C7 is the only square in row 3 that can be <2>

R4C5 is the only square in row 4 that can be <8>

R5C2 is the only square in row 5 that can be <8>

R7C3 is the only square in column 3 that can be <7>

R9C5 is the only square in column 5 that can be <6>

R1C5 is the only square in column 5 that can be <9>

R2C9 is the only square in column 9 that can be <8>

Squares R5C5 and R6C5 in block 5 form a simple locked pair. These 2 squares both contain the 2 possibilities <45>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R5C4 - removing <45> from <2457> leaving <27>

R5C6 - removing <45> from <2457> leaving <27>

Squares R5C4 and R5C6 in row 5 form a simple locked pair. These 2 squares both contain the 2 possibilities <27>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R5C7 - removing <7> from <4579> leaving <459>

R5C8 - removing <7> from <679> leaving <69>

R9C8 is the only square in column 8 that can be <7>

Intersection of row 1 with block 2. The value <5> 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.

R2C4 - removing <5> from <4567> leaving <467>

R2C6 - removing <5> from <457> leaving <47>

Squares R2C6 and R2C7 in row 2 form a simple locked pair. These 2 squares both contain the 2 possibilities <47>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R2C1 - removing <4> from <4569> leaving <569>

R2C3 - removing <4> from <4569> leaving <569>

R2C4 - removing <47> from <467> leaving <6>

Intersection of column 2 with block 7. The value <9> only appears in one or more of squares R7C2, R8C2 and R9C2 of column 2. These squares are the ones that intersect with block 7. Thus, the other (non-intersecting) squares of block 7 cannot contain this value.

R8C1 - removing <9> from <369> leaving <36>

R8C3 - removing <9> from <1369> leaving <136>

R9C1 - removing <9> from <349> leaving <34>

Squares R8C1<36>, R8C3<136> and R8C9<16> in row 8 form a comprehensive locked triplet. These 3 squares can only contain the 3 possibilities <136>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R8C4 - removing <3> from <238> leaving <28>

R8C7 - removing <13> from <139> leaving <9>

R7C8 can only be <6>

R5C8 can only be <9>

R8C9 can only be <1>

R9C9 can only be <5>

R7C7 can only be <3>

R4C7 is the only square in row 4 that can be <1>

R5C3 is the only square in row 5 that can be <6>

R8C3 can only be <3>

R8C1 can only be <6>

R9C1 can only be <4>

R9C4 can only be <3>

R9C6 can only be <9>

R4C1 can only be <5>

R7C2 can only be <9>

R9C2 can only be <1>

R4C3 can only be <4>

R2C1 can only be <9>

R4C9 can only be <6>

R3C3 can only be <1>

R6C3 can only be <9>

R6C1 can only be <3>

R2C3 can only be <5>

R1C2 can only be <4>

R1C9 can only be <7>

R3C2 can only be <6>

R1C4 can only be <5>

R6C9 can only be <4>

R2C7 can only be <4>

R2C6 can only be <7>

R5C7 can only be <5>

R5C5 can only be <4>

R6C7 can only be <7>

R6C5 can only be <5>

R1C6 can only be <1>

R7C4 can only be <4>

R5C6 can only be <2>

R5C4 can only be <7>

R8C6 can only be <8>

R7C6 can only be <5>

R3C4 can only be <8>

R8C4 can only be <2>

R3C6 can only be <4>