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17
votes
4answers
4k views

Crazyhouse/Bughouse openings

Are there any known or "standard" openings in bughouse or crazyhouse chess? Obviously, as soon as pieces start coming off the board things get less predictable, so this question is less about the ...
4
votes
0answers
36 views

Infinite sequence of consecutive checks allowing more pieces (say 9+ queens)

This is a task related to this question: Theoretical limit for the number of consecutive checks?. By a sequence of consecutive check, what we mean is white giving check, black replying with a check, ...
0
votes
0answers
16 views

Problems using Chessbase [closed]

I'm trying to use the link, http://openings.chessbase.com/, as it was recommended to me for practicing chess openings. I went to start lines and understandably misclicked a move. I tried to figure how ...
19
votes
8answers
4k views

Is there value to learning openings as a new player?

Am a new player (had played before hadn't picked up a board for 3 years having never taken the game that seriously) and am going to try and commit to at least 1 rapid (10+5) game per day. Have made it ...
2
votes
2answers
79 views

How to decide whether to exchange (good/active) bishops?

I have read about exchanging bishops for knights and inactive for active bishops. I still don't know how to decide when both sides' bishops are seemingly equally active. For instance, I have read that ...
5
votes
5answers
2k views

OSX implementation of WinBoard / XBoard?

Is there a Mac OSX implementation (or equivalent) of WinBoard / XBoard?
0
votes
3answers
228 views

Chess Problem: White to play and mate in two

White's turn, checkmate in two moves [FEN "r1b2k1r/1p2bppp/p1B2q2/8/8/8/PPPQ1P1P/2KRR3 w - - 0 1"] How does White deliver checkmate in 2 moves?
4
votes
4answers
612 views

Extract anonymized games out of a pgn

I'm a big fan of pgn-extract, but I am open to other linux-friendly tools. I have a big pgn file (over 5 million games) and a set of ECO codes. My goal is to fetch all the games matching those ECO ...
8
votes
1answer
238 views

Determining trusted chess sources?

When reading chess articles or watching videos online, my criteria for often determining if it is worth reading or watching is if it is made my someone with a FIDE title (IM, FM, GM, etc), but what ...
3
votes
2answers
108 views

Play against a computer, but only with a few pieces and without the kings

I would like to practise playing chess against an chess engine/program, but only with a few pieces, without the kings. For example, 3 pawns against one knight. Does exist any chess engine/program ...
4
votes
4answers
101 views

How do you document your opening repertoire on a mac?

I have an opening repertoire which I play consistently. My problem, however, is that occasionally I will find holes in my repertoire: main line variations for which I have zero prep. I'd like to make ...
1
vote
1answer
102 views

Is tactics training just a waste of time when you cannot play long games?

I have been doing tactics training quite regularly since the beginning of the year. However, I haven't really been playing a lot (for obvious reasons). On average, I would say that I spent 10 hours ...
1
vote
0answers
67 views

Why don't chess sites offer best of X match formats? [closed]

I believe chess sites should offer best of 3/5/etc match formats, rather than a one-off game. Basically, if you enter such a game, you don't "win" by just winning 1 game, you have to be the ...
1
vote
6answers
295 views

Position with the largest material imbalance that is a draw, no matter whose turn it is?

I am curious if there is a known position with the largest material imbalance that, no matter who it is to move, the weaker side can hold a draw.
12
votes
2answers
4k views

Is shuffling aimlessly for hundreds of moves permissible?

As I write this, game 73 of the TCEC Season 18 superfinal has just ended. What was most "interesting" about this game is the sheer amount of shuffling both sides did: starting from around ...
2
votes
1answer
105 views

Can playing too much chess make you see everything as chess moves?

According to this answer, some schizophrenics who compulsively play chess a whole lot see everything as chess moves. I looked for an alternate source of that information through a Google search and ...
-1
votes
1answer
68 views

How is AlphaZero defferent from Stockfish?

Obviously one is better than the other and AlphaZero uses machine learning and all, but what is the real reason for their different style of play? Given a position, both evaluate the next best move ...
6
votes
2answers
826 views

Safe place online for children to play against others

I'm looking for a safe website where my child can play. He is developing his game, I'm worried about people he may meet on various websites. If there are some known places please advise.
7
votes
5answers
218 views

Why is it acceptable to resign?

In nearly every non-chess field of competition I can think of, it is generally considered poor sportsmanship to quit before the game or match is played to completion. When playing other board games* (...
8
votes
5answers
1k views

Is there a word to count one moving by one player?

Is there a word to count one moving by one player? For example, the following series of moves: e4 e5 2. Nf3 Nc6 3. Bb5 a6 is counted as three moves. But if I want to denote "e4" as a unit ...
0
votes
2answers
54 views

Is there a standard way of scoring a position for chess programs?

It seems most chess programs score a position basically the same way, give or take a few tenths of a point, for a given position. For example, Stockfish might score a position as .65 while Houdini ...
2
votes
2answers
73 views

Carlsen - Ghaem, why does Black want to do e5?

I am watching videos about the London system, and one example they use is this game. [Title "Carlsen-Ghaem, Baku 2016"] [FEN ""] 1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 Bd6 5. Bg3 c5 ...
2
votes
1answer
108 views

How does Magnus create opportunities for his opponents to go wrong?

I have heard this statement many times, but I don't understand it. What does it mean exactly?
9
votes
6answers
702 views

When is a queen better than 3 minor pieces (or vice versa)?

Obviously a lot is going to depend on the exact position, but I'm asking if there are any general signposts - e.g. bishops usually get better than knights if the position is open, or in an endgame, ...
29
votes
8answers
14k views

Is it poor sportsmanship to resign immediately after a major blunder early in the game?

In a recent (online) game in which I had black, my opponent played an opening variation with which I was unfamiliar. That, a very aggressive attack, and lack of adequate time to think through my moves ...
2
votes
0answers
30 views

Looking for an historic chess game

I'm looking for an historic chess game (don't remember if Capablanca or Kasparov) that both queens are face to face and either let pass the other one, almost for like 7 or 10 movements, in the middle ...
3
votes
2answers
227 views

Looking for an old problem that I can't quite remember

I remember seeing a particular chess problem awhile ago on YouTube, but I can't find it. The problem's theme was something about caging in the Turkish king, and the video mentioned it as being old. ...
19
votes
6answers
5k views

Why struggle for a single pawn?

I've seen many chess games, where after a certain point, one side maneuvers their pieces (like doubling the rooks) to target a single point. Most of time it's a pawn on the wing and the other side ...
1
vote
3answers
208 views

Longest sequence with only moves to draw without a repetition

What is the longest known sequence of moves with upto 6 pieces where each move of both sides is the only move drawing the game (any other move would lose the game) ? There should not occur any ...
1
vote
1answer
58 views

Why is stockfish not accepting my move?

I am trying to play with stockfish from terminal. I entered the following commands: position startpos e2e4 d The output was: Why is stockfish not accepting my move?
5
votes
1answer
195 views

The Evolution of the K-Factor

The change in Elo ratings depends, among other things, on the K-factor (or development coefficient). Current rules FIDE Rating Regulations effective from 1 July 2017 give the following values: K = ...
2
votes
0answers
24 views

Are there any cloud engine services solely 'pay per use'?

I'm looking for a chess cloud engine service where I only have to pay for the time I use. I thought chessbase.com provides that, but you have to get a premium membership first (as far as I understand)....
3
votes
2answers
73 views

How to get static evaluation from Stockfish in case that a king is in check?

I am working on a program that should recognize the difference between human and computer players. For this purpose, I need some parameters. A part of them would be the individual values of the static ...
4
votes
1answer
188 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 ...
3
votes
1answer
387 views

Longest DTM in the endgame KQPPKQ

What is the longest DTM in the endgame queen and two pawns versus a queen (KQPPKQ? This position is a mate in 167 moves. [FEN "8/k7/6K1/1Q6/8/P6q/7P/8 w - - 0 1"] Are the DTC and/or DTZ ...
2
votes
0answers
16 views

Stockfish Transposition Table: 16 bit key equals 0 even if the key is found?

In Stockfish 11, they use the high 16 bits as key inside the cluster: const uint16_t key16 = key >> 48; // Use the high 16 bits as key inside the cluster This renders problem when key >> ...
3
votes
3answers
312 views

Is there a standard system of classification of games?

Given there are practically infinite number of chess games possible, does there exist a standard system of classifying or naming games simlar to how there are rules for naming a chemical compound ...
21
votes
3answers
3k views

When moves are randomized, is there an inherent advantage to the player who goes first, or the player who goes second?

Imagine we are pitting two automated players (bots) against each other, but instead of thoughtful moves made by the players, they make completely random choices. I realize that this is not really the ...
1
vote
1answer
47 views

How to store moves for a magic bitboard system?

I am currently trying to implement magic bitboards into my chess engine. Let's just talk about rooks here. Given a square, what I can currently do is: -Calculate the sliding moves on an empty board. ...
3
votes
2answers
95 views

Discovered attack in quiescent search

I'm implementing quiescent search in my chess engine, although just capturing moves have been generated. In the below position, at 1 ply, the white queen captures the pawn, but the quiescent search ...
2
votes
1answer
62 views

Engine is evaluating the same position at the same depth with different score

My engine is evaluating the same position at the same depth with a different score inside the search tree, is that normal? [Title "depth 1 ply 3 alfa -20 beta -15 score -15 (1.Na3 a5 2.Nh3)"] [FEN ...
31
votes
7answers
15k views

Is Stockfish 11 (level 20) beatable?

I have heard many people saying, “Hah! I beat Stockfish,” and one saying, “I am the best chess player ever! I beat Stockfish.” So I wonder if it is possible, just to know whether I should try to beat ...
5
votes
2answers
646 views

Why didn't Donald Byrne capture with the queen instead of pawn (against 13-year-old Bobby Fischer in the Game of the Century)?

I watched this video - Game of the Century - Bobby Fischer vs Donald Byrne in which the 13-year-old Bobby Fischer defeated Donald Byrne in an epic match. But I didn't really understand what happened ...
0
votes
4answers
693 views

What is perfect play?

What exactly is perfect play? Can there can be multiple perfect plays, which sounds quite contradictory? If perfect play is known for all openings then why would a player play anything other than that?...
1
vote
0answers
39 views

Magic bitboards: My indexing doesn't seem to work!

I am beginning to understand magic bitboards. I have successfully implemented them with Rooks, and I am currently working with Bishops. The method is very similar though. Problem I have a bishop on g7 ...
3
votes
0answers
33 views

How do I improve my Chess rating [duplicate]

Its been almost three and a half years since I am playing chess online on chess.com. But I never crossed my Chess rating above 1500 on chess.com. And I think that three years is enough for anyone to ...
1
vote
1answer
77 views

Mate In N algorithm-Lichess Computer Analysis

Is it possible to have the computer analysis report mate in 12 moves to only change that to mate in higher number of moves, like 15 for example, after it searches deeper?
6
votes
0answers
126 views

Games won by the stalemated player?

Here is a quote from Davidson, A short history of chess (Link), chapter 8, which I used in an answer to an earlier question. [...] In Italy, however, from the very beginning, players could not ...
0
votes
1answer
69 views

Sicilian Defence or Caro-Kann also help with Queen's pawn opening [closed]

I know and play the Sicilian defense. Specifically, I mix it with the Hyper Accelerated Dragon with the kingside rook pawn movement akin to the Najdorf. I am also learning the Caro-Kann, in which most ...
6
votes
2answers
3k views

Does a loophole still exist in the defintion of castling?

Castling on the e-file with a promoted rook, an idea immortalized by Tim Krabbe and Max Pam, is no longer legal since FIDE amended the wording to state that castling is an actionn on the first/eigth ...

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