Unanswered Questions

24 questions with no upvoted or accepted answers
5
votes
0answers
99 views

16 roses, 16x16 board; maximum double-attacked squares while all 256 squares are attacked at least once?

The rose is a piece that is best described as a "circular nightrider", able to reach up to 32 other squares from the center of a 13x13 area by making consecutive knight jumps in a rotating fashion in ...
5
votes
1answer
347 views

From a full board to a pawn endgame in the shortest possible number of half-moves

Is any game known where all the pieces (except the pawns) are still on the board, and where a piece (not a pawn!) is captured at each half-move, leading to a pawn endgame? In other words, is there a ...
4
votes
0answers
122 views

Are these magics wrong?

I am working on my chess engine and wanted to finally implement magic bitboards to get a huge increase in performance. Basically I was writing a method to check if a number can be used as a magic for ...
4
votes
1answer
212 views

How strong is each level of Atari 2600's Video Chess?

I used to play Video Chess on Atari with my dad when I was a kid. What is the approximate FIDE rating of each level?
3
votes
0answers
70 views

Full “reverse checkers” position in GM game with 12 or more pieces per player?

In yesterday's Tata Steel tournament in this game between Dubov and Artemiev this position was reached: [title "Dubov - Artemiev Tata Steel 2020"] [fen "r1r5/1p1q1pk1/2n1p1p1/2RpP2p/p2P3P/P1Q3P1/...
3
votes
0answers
27 views

Human assisted handicapped engine against engine, adjustable parameters

I am looking for software preferably local interface on windows, to play human+engine against engine with access to search parameters such as depth and "greed" or dismissal factor (controlling ...
3
votes
0answers
129 views

Online chess with full disclosure of name and FIDE ID

I would like to play online chess via an interface where name and FIDE number are disclosed, mainly because I believe that this discourages engine users. A few questions: I found the FIDE Arena ...
3
votes
0answers
297 views

Is this a sound elephant offer?

In the following dobutsu shogi position, is Gc3xc2 a bad move? ABC +---+ 1| | g 2|lce| 3|E G| 4| L | *C +---+
3
votes
0answers
186 views

Elo rating software with automatic random matchups

This question is not about chess per se, but I am looking for a software that could generate random matchups through a list of 200ish options/people, then I could choose the winner and it would rank ...
2
votes
0answers
36 views

Where to find cross table for 1956 Thanksgiving weekend Eastern Open?

Berliner won this tournament. Chess life/review reported it. Newspapers reported it. The Eastern Open in 1956 was Thanksgiving weekend in the YMCA in DC. Berliner won it. Rossolimo, Lombardy, ...
2
votes
0answers
52 views

How to reduce the number of playouts on LeelaChessZero?

So after checking the wiki it seems the parameter "--playouts" allows to chose the number of playouts. But when I try it on my laptop it just fails: $ ./lc0 -w meangirl-7.pb.gz --playouts 5 v0.23....
2
votes
0answers
29 views

Where to find a list of the computer stored in the FICS Games Database?

According to the FICS Games Database there are currently 1,525 "computers stored". Such accounts are indicated by a "(C)" after the username. However, this suffix does not seem to be recorded in the ...
2
votes
0answers
127 views

Wrong perft result?

I'm writing a chess engine for fun. Currently I'm finishing writing the move generator. During the research I leaned about PERFT for debugging my software. Indeed, I found many bugs, some of them was "...
1
vote
0answers
45 views

Are there studies showing that descriptive notation is easier to use for blindfold than algebraic notation?

What studies have compared effectiveness for thinking by chessplayers using descriptive vs algebraic notation?
1
vote
0answers
54 views

What effects would being able to capture while castling have?

Capturing an enemy piece while castling has been illegal for many decades, and the concept has been solidified in chess history. But what effects would it have if it were allowed? First, some ground ...

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