All Questions

79 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
9
votes
0answers
295 views

If repetition loses, who wins KvK?

Suppose we're playing a version of chess where you lose if you repeat an earlier position (position = arrangement of pieces + who's move it is). We're down to the wire, and we've just arrived at the ...
7
votes
0answers
109 views

What site/s has/have different ratings for different time controls for Chess960?

Both lichess and chess.com and have ratings for live chess960, but this is regardless of time control. Please recommend a site that has separate ratings for different time controls for chess960. there'...
7
votes
0answers
148 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/...
6
votes
0answers
141 views

Stockfish position evaluation component terms in Python?

I saw the excellent Javascript-based guide to how Stockfish evaluates (non-NNUE). Is there a python version out there, perhaps using python-chess? What I am trying to do (in case you have other ...
5
votes
0answers
131 views

How engines accomplish calculation speeds of 1000kN/s per Core and above?

I am developing a chess engine to improve my Cpp. It works, which means it generates legal moves and it can play them out. I optimized a bit and now achieve ~20k N / s, which is way better than my ...
5
votes
0answers
228 views

Highest depth ever achieved

I saw a guy that went into depth 70 with no search moves at 41, 192, 897, 168, and 184 nodes from the starting position on Stockfish a few years ago. I would like to know if this is still a record or ...
5
votes
0answers
73 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 (...
4
votes
0answers
146 views

What's the etymology behind the Great Snake Variation?

This is called the Modern Defense: [FEN ""] 1.e4 g6 This is called the Modern Defense: [FEN ""] 1.d4 g6 This is called the "English Opening: Great Snake Variation": [...
4
votes
0answers
150 views

Who was, or is, the oldest WGM?

It is well known that (concerning GMs only) Lilienthal set a record - he missed the 100 only by 3 days. Averbach is very close to beating him. What about WGMs? It is trivial to look into the FIDE ...
4
votes
0answers
222 views

What are the origins of Hand & Brain chess?

I was recently leafing through Pritchard's Encyclopedia of Chess Variants when I noticed that the variant Hand and Brain which has recently become popular, in which one player states the piece to the ...
4
votes
0answers
189 views

Moving absolutely pinned piece to give checkmate: has this ever occured in a master game?

We know that a (absolutely) pinned piece can move and give a check, and the check can even be a mate. The following is an example for such a checkmate. [FEN "8/8/2k5/8/4p2b/r7/3RKPBr/q7 w - - 0 1&...
4
votes
0answers
136 views

What does "control" mean in a chess problem?

When interpreting the instructions to a chess problem, is a piece automatically considered to "control" the square it's on, even if that square isn't threatened by any friendly piece, and an ...
4
votes
0answers
135 views

Chessboard Domination from Opening

From the opening position for black (with no white pieces on the board), what is the fewest number of moves in which we can dominate the entire board, that is, reach a position so that each square is ...
4
votes
0answers
117 views

Relation between ratings for Chess960 and standard chess

Is there any relation or any attempt at discovering a relation between Chess960 ratings and standard chess ratings? This can be for GMs, for (any)M's, for pro players, or for all players on lichess/...
4
votes
0answers
90 views

Is there a mathematical way to determine whether going to depth n+1 would be x% likely to recommend the move at depth n?

I have a chess GUI which I've recently been updating to do preemptive searches (that is, depth searches for all possible opponent moves) that I'd like to speed up, since the bot searches go to at ...
4
votes
0answers
105 views

Where are the non captured Black pieces?

[FEN "8/8/8/8/8/PP4PP/2PPPP2/NNBQKBRR w - - 0 1"] Here is a problem from my blog once more. This is the position after White's 14th move. Seven Black pieces were captured during the game ...
4
votes
0answers
321 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 "...
4
votes
1answer
209 views

How big is the advantage for white in the "back-rank-game"?

Consider a chess variant in which normal chess rules apply, with one exception. The player that is able to bring a piece or a pawn onto the opponent’s back rank, which would be the 8th rank for White ...
3
votes
0answers
110 views

Opening and endgame experts in chess

There are famous players who are called endgame experts ("opening expert" IMHO is less used), e.g. Rubinstein. Now obviously, to be a GM, you have to know a bit of all game phases, and a ...
3
votes
0answers
34 views

Where can Botvinnik's analysis of Botvinnik - Gligoric, Tel Aviv 1964 be found?

I have seen an old post in a chess forum referring to Botvinnik's own analysis of the game presented below. I have searched, but did not find it. Where can the analysis be found? If you can provide a ...
3
votes
0answers
109 views

How do you evaluate this position?

rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1 [Date "2021.08.14"] [Result "0-1"] [UTCDate "2021.08.14"] [UTCTime "22:01:55"] [...
3
votes
0answers
71 views

Move order in Samisch King's Indian, Panno Variation

This is the traditional move order given for the Panno Variation of the Samisch King's Indian: [FEN ""] 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6 8.Qd2 Rb8 My question ...
3
votes
0answers
36 views

Setting up Stockfish for Droidfish

I would like to set up Stockfish for the android app Droidfish. How do I set up a server for a Windows machine (my linux machine is too weak) using SF13?
3
votes
0answers
212 views

Chessmaster: Modern version of lectures?

Thing 1: This lichess study says Examining positions from Josh Waitzkin's academy, Larry Christiansen's attacking chess, and other exercises or games from this (now) ancient chess program in light of ...
3
votes
0answers
201 views

The most often played chess game

Offhand, I say the Shepherd's Mate. But let us just consider "serious" tournament play. Still, the game must be rather short to be repeated extremely often. Could be a "Will they ever ...
3
votes
0answers
58 views

Rep Suggestions for Petrosian System in Gruenfeld

I was wondering what people suggest against the Petrosian System in the Gruenfeld. I'm "club strength" and am just starting to learn the Gruenfeld. I'm especially curious about this c5-b5-...
3
votes
0answers
92 views

Debugging my PERFT coding

I'm stuck debugging my move generation and do move function. I noticed that the castling as actually the problem in my code, but I think I have implemented everything right. I installed some java ...
3
votes
0answers
69 views

Finding every longest endgame for each material configuration

I can find statistics on the number of moves until checkmate in the Syzygy endgame table for each material configuration. Let's say I am interested in "KQQvK" endgames. The statistics show ...
3
votes
0answers
63 views

Seeking a transcript of Hope vs. Fischer, 1972

On one of Bob Hope's television specials in 1972, Bobby Fischer appeared with him in a skit about himself (Fischer). The two also sat down at a board and sort-of played a game. (The moves were not all ...
3
votes
0answers
192 views

Relation between Elo and search depth for basic minimax

If we use the most basic approach to a chess engine (for example, for a codegolf): minimax to a fixed depth with the material count as static evaluation, then how strong is this algorithm? This of ...
3
votes
0answers
61 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, ...
3
votes
1answer
581 views

What are some of the chess sites that allow Round Robin or Swiss Tournament to be organized?

I have been experimenting with the Team feature and tournament features in Lichess, but I just learned that it's not possible to have swiss, round robin or manual pairing in Lichess. A couple of ...
2
votes
0answers
37 views

How can I query an endgame tablebase for multiple positions using loops/conditional statements?

In textbooks you find diagrams about key squares and similar concepts. For example, white can promote a pawn if white's king can control three particular squares infront of the pawn. I would like to ...
2
votes
0answers
162 views

Do main lines score significantly better?

Even at highest levels players make significantly but human mistakes. On the other hand there exist a great opening theory with lines studied in deepth, especially the mainlines. Isn't the precision ...
2
votes
0answers
99 views

Number of games ever played in history?

Obviously, an exact answer can't be given, but we can't count all electrons in the universe either and physicists still gave an answer probably correct by an order of magnitude. Let's specify: Only ...
2
votes
0answers
144 views

A classical Rook vs Bishop endgame (with pawns)

Karsten Muller and Lamprecht give the following ending as a win in Fundamental Chess Ending. However , Houdini 6.02 does not find a win as far as I analyzed. The ending is the following: R7/5pkp/4b1p1/...
2
votes
0answers
47 views

Online tool for chess analysis: comment, add variations, insert diagrams, print

Sometimes I like to analyze and annotate my own games and print them on paper. This would usually include commenting some moves, adding variations, inserting diagrams for certain positions, etc. I ...
2
votes
0answers
87 views

Chess Engine Using LazySMP

I was hoping to parallelize the chess engine I was currently working on. I have done some research on some of the various types of algorithms such as YBWC, ABDADA, and LazySMP which is currently used ...
2
votes
0answers
165 views

Why did Kasparov resign at 19. c4 in game 6 of the 1997 Deep Blue match?

The game is justifiably famous and is linked here. [FEN ""] [startply "39"] 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Ng5 Ngf6 6.Bd3 e6 7.N1f3 h6 8.Nxe6 Qe7 9.O-O fxe6 10.Bg6+ Kd8 ...
2
votes
0answers
105 views

Can I watch two engines play each other on lichess?

Is there a way for me to watch two chess engine to play each other on lichess? I want to know who will win under time-limit.
2
votes
0answers
185 views

What is the point of playing the 5.d3 (or 6.d3) Ruy Lopez, when White can play Giuoco Piano (or Modern Italian)?

As title above, what is the point of playing the 5.d3 (or 6.d3) Ruy Lopez, when White can play Giuoco Piano (or Modern Italian)? In other words, why play 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 (or ...
2
votes
0answers
57 views

Percentage of decisive games decided by tactical mistakes?

In their book, The Woodpecker Method, Axel Smith and Hans Tikkanen give these percentages of decisive games decided by tactical mistakes: GMs 42% 2200-2400 44% 2000-2200 63% 1800-2000 72% They say: ...
2
votes
0answers
59 views

Looking for a PGN reader and writer for Windows 10

I'm looking for a PGN reader and writer for Windows 10. I want to be able to modify and write if I want to enter new lines, all while keeping the format in PGN. I've downloaded ChessX, and it would ...
2
votes
0answers
69 views

How do I proceed in this opening as black in BugHouse?

I play bughouse pretty often, but I often end up in the following position (as black). [FEN ""] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Bxf7+ Kxf7 5. d3 Nf6 6. Ng5+ In normal chess, it's pretty ...
2
votes
0answers
177 views

Response in antichess to 1. e3 b5 2. Bxb5 Bb7

I've been playing a lot of blitz Giveaway Chess (aka Antichess, etc; a chess variant in which capturing is compulsory, the goal is to lose all the pieces or be stalemated, there is no castling, and ...
2
votes
0answers
132 views

Why isn't chess played white 1 move, black 2 moves, white 2 moves and so on?

In turn based games like chess, the player playing the first move has an advantage the whole game. One way to "remedy" this is to let the player starting the game make one move (and have the ...
2
votes
0answers
60 views

What are Silver and Bronze positions for FIDE direct titles?

I refer to https://handbook.fide.com/chapter/B01DirectTitles2017 for the following question: Direct titles are awarded based on your performance in certain tournaments. A gold finish is being 1st ...
2
votes
0answers
280 views

How to turn off Contempt in engine analysis?

I'm trying to analyze a game with the python-chess package, and for that I want to turn off the "Analysis Contempt" option in Stockfish. However, it seems it doesn't work, and I don't know ...
2
votes
0answers
124 views

Scid vs PC Score Graph

Is it possible to modify the source code to change the display of the score graph so that you are always at the bottom? Currently, the player playing White is always at the bottom.
2
votes
0answers
61 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 ...

15 30 50 per page