Chessdoku-3: Royal Fork
(Published on 6. March 2025, 12:38 by .proxz14)
Hello and welcome to the third iteration of the chessdoku series! After a rather difficult set of puzzles to get the series started, I wanted to set a rather easier puzzle to showcase an easier chess concept to the fellow sudoku community here. A fork in chess is a situation in which a piece (usually a knight) threatens multiple pieces at the same time. This is one of the most basic tactical patterns in chess to be aware of in your games. If the fork involves a queen, a rook and a king at the same time, then it is called a Royal Fork by some players.
This puzzle is part of my "Chessdoku" series, you can find the rest of the puzzles in the series here;
(1) The London System
(2) Anti-Berlin Defence
Rules:
Normal 8x8 Sudoku rules apply. Place the digits 1-8 in every row, column and 4x2 region once each.
Arrows: Digits along an arrow must sum to the number in the bulb.
Region Sum Lines: For each blue line, digits on the line have an equal sum N within each box the line passes through.
Black Dot Kropki: Digits separated by a black dot must have a ratio of 1:2.
Odd: Digits in a purple circle must be odd.
Anti-Knight: Digits that are a chess knight's move away from each other can't repeat. You wouldn't want to hang another fork, would you?
Play on SudokuPad
Unshaded Version: Play on sudokuapp
Solution code: Column 1 (top-down)
Comments
on 17. March 2025, 11:07 by LancelotAugustus
好玩，爱玩。
on 11. March 2025, 16:51 by .proxz14
Added links to the other Chessdoku puzzles
on 8. March 2025, 14:05 by .proxz14
Added an unshaded version of the puzzle as an alternative to the chess-themed shading.
on 8. March 2025, 00:02 by dingledork
I enjoyed it. Small request - I get the thematic chessboard shading, but could you offer an unshaded version as well?
.proxz14's response: Glad you enjoyed the puzzle! And for the shading yes I can add an unshaded version of it :)
on 6. March 2025, 16:14 by Fra314
Lovely!
.proxz14's response: Lovely comment, thanks!
on 6. March 2025, 13:09 by ghaia
I see you finally adjusted the sudoku grid to make it a real chess board :) cute detail, I love it.
I found the break in a bit challenging, but once I figured it out, it flowed extremely nicely! Really fun, thank you :)
.proxz14's response: I'm glad you enjoyed it! Thank you for testing the puzzle :)
---
anytime!
