placeholder for puzzle 2
tcec puzzle 2
July 23, 2020tcec puzzle
April 29, 2020This is a puzzle made for TCEC by gideon425.
mrbdzz solved the puzzle, after a lot of specific
clues were dropped.
points. I awarded leesongun 1 point after he said the following
(1) the only thing I know is that pos 10 is mate in 1
(2) umm position 3 is mate in 3
I awarded 1 point to mrbdzz for the following
(1) hmmm… pos 6 is win for black
More positions may be added over time. It is currently unsolved and it is my intention to update this page if it is solved.
What property do these positions have?
Some additional information. No knowledge of the chess games of Greco or others should be required to solve this. The puzzle was designed with the idea that it could not be solved by using google or an engine. Although I cannot be sure of this, I suspect that once people come up with the correct answer, they will be pretty sure that it is correct.
The solution has no connection to Scarlett Johansson. Nor does it involve mobility itself.
The design idea that the puzzle not be easily solvable by google or an engine was partially inspired by the aloril puzzle whose rules are here
pos 1. "8/8/2pP4/2P5/2PR4/4K3/8/4k3 w x - - 0 1"
pos 2. "8/8/8/5N2/4Pk2/8/4QK2/8 w - - 0 1"
pos 3. "8/8/8/1K5p/3p4/3k4/5Q2/2R5 w - - 0 1"
pos 4. 3K4/8/1p6/8/k7/P1Q5/8/8 w - - 0 1
pos 5. 6br/R4p1k/5PpB/8/3P2P1/6P1/3Q4/1B4K1 w - - 0 1
pos 6. 8/6p1/5pPk/5Bb1/5Q2/4K3/p7/8 w - - 0 1
pos 7. 5k2/8/5K2/1Nr5/Q7/8/8/8 w - - 0 1
pos 8.
7k/8/R1p4K/7b/7b/8/8/8 w - - 0 1
pos 9.
3k4/8/3K4/8/6pP/P5PR/7P/8 w - - 0 1
(ignore the number at the bottom of the image)
pos 10.
3k4/8/3K4/8/7P/6R1/8/8 w - - 0 1
To complete the puzzle, here are two positions
which do not have the desired property.
pos 1bad. 2k5/8/2KR4/8/8/8/8/8 w - - 0 1
pos 2bad (provided by kanchess). 8/6b1/2p2kNp/2p5/6P1/3P1K2/3P4/8 w - - 0 1
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