R2C3 can only be <5>

R9C9 can only be <8>

R1C3 can only be <3>

R9C7 can only be <7>

R1C1 can only be <2>

R9C3 can only be <4>

R8C7 can only be <9>

R1C8 can only be <9>

R1C9 can only be <6>

R1C7 can only be <5>

R1C4 can only be <7>

R2C7 is the only square in row 2 that can be <1>

R3C9 is the only square in row 3 that can be <3>

R3C8 is the only square in row 3 that can be <4>

R5C1 is the only square in row 5 that can be <3>

R9C1 can only be <5>

R9C6 can only be <2>

R9C2 can only be <3>

R5C9 is the only square in row 5 that can be <4>

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

R5C3 is the only square in row 5 that can be <1>

R8C3 can only be <8>

R8C5 can only be <5>

R6C3 can only be <6>

R7C3 can only be <9>

R7C1 can only be <7>

R8C6 can only be <7>

R8C2 can only be <1>

R7C2 can only be <2>

R6C1 can only be <8>

R7C5 is the only square in row 7 that can be <3>

Squares R3C5 and R3C7 in row 3 form a simple locked pair. These 2 squares both contain the 2 possibilities <28>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R3C4 - removing <28> from <2589> leaving <59>

R3C6 - removing <8> from <589> leaving <59>

Squares R5C6 and R7C6 in column 6 form a simple locked pair. These 2 squares both contain the 2 possibilities <68>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R4C6 - removing <68> from <5689> leaving <59>

Squares R2C4<268>, R5C4<268> and R7C4<68> in column 4 form a comprehensive locked triplet. These 3 squares can only contain the 3 possibilities <268>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R6C4 - removing <2> from <259> leaving <59>

Squares R7C4, R7C6, R5C4 and R5C6 form a Type-1 Unique Rectangle on <68>.

R5C4 - removing <68> from <268> leaving <2>

R6C5 can only be <1>

R6C9 can only be <9>

R6C4 can only be <5>

R4C9 can only be <1>

R6C2 can only be <7>

R3C4 can only be <9>

R4C6 can only be <9>

R3C6 can only be <5>

R6C8 can only be <2>

R4C2 can only be <5>

R2C8 can only be <8>

R2C4 can only be <6>

R4C8 can only be <7>

R3C7 can only be <2>

R3C5 can only be <8>

R2C5 can only be <2>

R7C4 can only be <8>

R4C5 can only be <6>

R4C7 can only be <8>

R5C6 can only be <8>

R5C7 can only be <6>

R7C6 can only be <6>