Knight's Chains
(Published on 6. June 2022, 05:10 by Scruffamudda)
Normal sudoku rules apply.
Digits in green shaded cells must see four identical digits by a chain of chess knight's moves on distinct cells. The chain must start on the shaded cell and include five identical digits including the shaded cell.
Solution code: column 9
Solved by Chester_Aurion, Prince Joffrey, Chelo, efnenu, zorant, Leonard Hal, dhdydg, Bjd, mos, DVFrank, ofsmul, Dermerlin, RockyRoer, karen_birgitta, salsais, zrbakhtiar, bolado
