Speckled Knight: sdholmes treats us to a great anti-knight Sudoku

Today's Video:

This one nearly defeated me! Watch from 00:23:00 onwards where I lost the plot!

Aside from that, incredibly smooth puzzle to enjoy for sure 😃

Link to Play:

Speckled Knight by sdholmes https://sudokupad.app/5wkp0mrxm5

Rules:

Normal Sudoku rules apply.

Digits within a chess knight's move may not contain the same digit.

The digits 1-9 appear on both indicated diagonals.

Grey palindrome lines read the same forwards and backwards.

Clues outside the grid sum the digits along the indicated diagonal.