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Puzzle #579: Chess Sum Sudoku
Chess pieces break up a giant 12 by 12 sudoku grid already filled with killer sudoku cages. Can you place the digits 1 to 9 while obeying the sums?
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Comments
You're right - that should have been 19. I think I missed one of the cells when adding them up. I'll fix this shortly.
I tried to come up with symbols that look close to the pieces they represent, but if you know of a specific site or resource that uses better symbols please let me know and I'll consider changing mine to look similar.
January 19, 2011 (1:43 pm)
Well, I'm glad I found the right solution. I found that some of your earlier chess puzzles seemed to have more immediately recognizable pieces, specifically June 6 2010. The October 18 puzzles used these same pieces.
I think the specific feature that causes my visual confusion is the shape of the "hips" which is the same on your bishop and king. If you look http://en.wikipedia.org/wiki/Bishop_(chess) for example you see that the bishop image has a wide flat bottom while the king piece is more like a crown, narrowing in at the bottom instead of flaring out. I think making the bottom bit of the king vertical or slightly sloped in, instead of sloping out, would be the key difference for me.
January 20, 2011 (10:03 am)
I've reposted the puzzle again after changing the style of the king pieces. Joshua has seen them already and gives his approval, but all other visitors should take a look and let me know your thoughts as well.
January 20, 2011 (2:57 pm)
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Mistaken bishop? I thought i had solved this puzzle with everything forced, but the 17 bishop gives me a sum of 19 instead. Should I start over, or is there a typo?
I think if it's my mistake the most likely reason is that sometimes I confused the kings for bishops. I'm not sure why I kept seeing them incorrectly but I know it happened more than once while I was solving. Maybe you can use images that are closer to the "standard" chess symbols?
January 19, 2011 (1:40 pm)