All Questions

5
votes
2answers
77 views

Ideas for the English opening

I'm playing recently the English opening. specifically this line in the two knights variations [FEN ""] 1.c4 e5 2.Nc3 Nf6 3.g3 Nc6 4.Bg2 But I find it difficult to see when it's advantageous to go ...
3
votes
1answer
110 views

Amount of search per decision: GMs versus AlphaZero and Stockfish [duplicate]

In Demis Hassabis' presentation at the the Kinds of Intelligence Symposium in January 2018, grandmasters are compared to AlphaZero and Stockfish along an interesting metric: how many moves are ...
2
votes
2answers
80 views

Sicilian dragon classic games [closed]

I am trying to collect a list of Sicilian Dragon classic games, which every dragon player must be aware. I would really appreciate if you could share some classics and also highlight the most ...
1
vote
1answer
76 views

Node Cap for Stockfish [closed]

I discovered something quite unusual when working with stockfish 10 chess engine in arena. The discovery leads me to ask: Why does Stockfish_10_x64 have a Node Cap when searching moves based upon ...
1
vote
2answers
137 views

Why queen traps happen so frequently? [closed]

I am aware that in most chess games the king is the one to be checkmated. Yet when playing many online chess games I have found the queen is the the one being checkmated. Is this simply another ...
-4
votes
3answers
163 views

What are unsolved problems in chess? [closed]

What I want to know is: are there any problems in chess that remain unsolved?
4
votes
1answer
84 views

How to disambiguate checking moves in descriptive notation?

Question: In general, is noting a check/checkmate sufficient to disambiguate moves in descriptive notation? If for example two of the same type of piece could move to the same square, but one giving ...
5
votes
2answers
175 views

Can't understand a sentence from Nimzowitsch's Chess Praxis

In the chapter "Centralization" of his Chess Praxis, Nimzowitsch writes The mechanics of centralization can be seen in the way that, after the necessary restraint of a possibly mobile opposing ...
2
votes
2answers
125 views

What's next after first 5 months and 700 points? [closed]

I started playing chess in July. I was at a 600 rating on Chess.com for a month. I started playing seriously in August and have played regularly (at least a few blitz and rapid games everyday). ...
-2
votes
2answers
66 views

Do someone found if there exists a ever winning side? [duplicate]

Have chess science advanced enough to determine if there is a a chess side that always win if both sides are given unlimited time to think for the next move? Note the question Is not dumb as might ...
2
votes
1answer
126 views

Good follow up to 1.d4 Nf6 2. e3 for black

I play the nimzo Indian defence, and so in response to 1.d4 I play Nf6, planning on playing e6 and Bb4. However, if they follow up with any other moves, I am at a bit of a loss as to what to play. I ...
3
votes
2answers
92 views

Plans for black when White castles short in the Sicilian dragon

What are the plans for Black when White castles short in the Sicilian dragon? Very broadly speaking I am thinking of two plans. Go for a King's Indian like kingside attack with e5 played at a ...
0
votes
1answer
78 views

PGN-Extract output each game to a separate file with name like opponentA-opponentB.pgn

How can I use PGN-Extract to split a multi-game pgn into separate files with just one game per file. With the pgn being named for the opponents? Like opponentA-opponentB.pgn
3
votes
2answers
187 views

What types of pawns are there in chess?

I’ve heard of a few types of of pawns in chess gameplay. These include passed pawns, thorn/fawn pawns, promoted pawns, and and en passant pawns. But that is all I can remember. What other kinds of ...
10
votes
1answer
3k views

What is the least number of knights needed to cover the entire board?

I’ve seen the solutions to the lowest amount of queens, bishops, and rooks are needed to cover an entire board, as in they can attack all squares and are the only type of piece on the board. What is ...
5
votes
2answers
175 views

Why doesn't white play Bd2 after this …Qa5+?

I was looking at an analysis which shows this position ( from Bacrot - McShane 2018). At this point Black just played ...Qa5+, and the only moves that are analyzed for white are Kf2, c3 and Qd2. This ...
1
vote
2answers
164 views

Are a pair of bishops of the same colour usually worth less than a pair of bishops of different colours?

People have been discussing about the value of a pair of two bishops. I am wondering if two bishops are of the same colour, are they generally worth less than a pair of bishops of different colours? ...
1
vote
2answers
147 views

Is my representation of the Pirc Defense correct?

I tried to represents all the main lines of the Pirc Defense to play at a 2000 ELO level. Am I right with the following tree? What I mean by right is I wonder if I do not miss any popular line or ...
6
votes
1answer
292 views

Advancing the c6 pawn in the Caro-Kann

I am having trouble understanding when Black should move c5 in The Advanced Variation of the Caro-Kann. I have posted two games of mine below: In this first game, after the seventh move of White, ...
3
votes
1answer
111 views

Any online site with limited number of games per day like chess.com or chess24

I have a problem that when I start to play I cannot stop, and I am looking for some good online chess web site that have limited number of rated games per day for, lets say non premium user, or ...
1
vote
1answer
64 views

Morozevich variant in the Tarrasch french

I am confused with the Morozevich variant. I've seen quite a few funny games where they played ...g5, which gives very interesting moves, but I'm surprissed at not having seen any game in which white ...
4
votes
1answer
145 views

Heavy piece endgame with 2 extra pawn, how to convert?

1r6/5pk1/2q1p1pp/3p4/r2P4/2P4P/PPQ2PP1/R3R1K1 w - - 0 1 White to move. White is 2 passed pawns up, but black is very active. I'm sure objectively white is winning, but how? Black will attack and ...
0
votes
1answer
42 views

Is any tool which allow analyse EPD file and add evaluation score per I want specify depth/multi PV

I tested some tools which allow analysis EPD files but they not work like I want: I can use Arena but it will not annotate back EPD - it create protocol file. I can use SCID vs PC but it will not ...
1
vote
2answers
115 views

Why play 7… Nxd5 instead of 7… exd5 in the QGD?

I'm currently following the rapid game Caruana-Nakamura in the London Chess Classic, and I have a basic question about the opening moves. Why play 7... Nxd5 instead of 7... exd5? Is the idea to trade ...
15
votes
1answer
2k views

Was the value of thorn pawns fully appreciated in decades past?

Many videos on YouTube channel "Kingscrusher" which discuss the play of new neural-net engines like Leela Chess Zero focus considerable attention upon the development of "thorn pawns" which are pawns ...
1
vote
2answers
122 views

In a tournament game, what should a player do if he find that his opponent's position is impossible, which was caused by an earlier illegal move? [duplicate]

For example, if a player realises that his opponent has two bishops of the same colour after a certain legal move (and assuming that it is clearly not caused by any pawn promotion), which implies that ...
4
votes
1answer
165 views

Why did this game end with a draw?

This game starts with f4 e5 g4 IMO, black has a winning position here. How did it end with a draw?
-2
votes
1answer
146 views

What is the fastest way to an en passant checkmate AFTER all other possibile en passant have been made?

I want to know what the quickest way to an en passant mate is for either side, after all other possible en passant moves by both sides have been made. This is a very complicated question, so it is ...
1
vote
1answer
92 views

What is the most number of en passant moves possible, and the fastest way to that?

I have previously asked how many passed pawns can be gotten. So this time I am asking how many en passant moves can be done overall by both sides theoretically. I also want to know what is the ...
1
vote
1answer
53 views

Is there a Open Source or Shareware Legal Move Checker Executable?

Background: I wrote and use a custom macro in the NoteTab Pro text editor to convert PGN position analysis to XML. The resulting XML is used on my website to display chess puzzles. I need to check ...
1
vote
3answers
535 views

The games AlphaZero lost

AlphaZero lost 6 games to Stockfish in a 1000-game match from the starting position, at least one of which was with the white pieces: A game A0 lost with white. For some reason, these games haven't ...
1
vote
1answer
86 views

How is MultiPV enabled in general?

I looked at the "Description of the universal chess interface (UCI)" dated April 2006, and did not find a command or option that seemed to address how a GUI might enable MultiPV (I assume that PV ...
0
votes
1answer
119 views

Blitz games managment

Here is the problem : when I have the time, i usually find the right move. Meaning, in a longer time frame games (more than 10min) I'm doing better. I feel like struggling with 5 min. games and I don'...
2
votes
1answer
186 views

Is AlphaZero deterministic?

AlphaZero searches for moves using Monte Carlo Tree Search (MCTS). As I understand MCTS, it takes the root position, goes to a child node, and then plays random moves until one side wins. Since the ...
0
votes
1answer
85 views

Scid vs PC, how to get ECO data ?

Installed SCID vs PC. Can this give a count or frequency distribution of the ECO codes of the games ? So far unable to do this. Under the Tools tab there is a selection "Opening Report". This gives a ...
1
vote
1answer
73 views

Tablebases for variant where stalemate is a win?

Since time immemorial, some people have suggested that stalemate be declared a loss for the player who is unable to move. This proposal is sometimes called "abolishing the stalemate rule" although I ...
29
votes
9answers
7k views

Are there any gambits involving sacrificing a piece?

My impression of the word "gambit" is the sacrifice of a pawn or several pawns at the opening stage of a chess game. However, based on the definition on Wikipedia, a gambit (from ancient Italian ...
1
vote
1answer
180 views

Rules: Is this position a draw?

Is this position a draw? [fen ""] 1. Nf3 Nf6 2. Ng1 Ng8 3. Nf3 Nf6 4. Ng1 Ng8 I don't mean to ask the age-old question "is Chess a draw?"; four moves have been played here, returning to the starting ...
5
votes
2answers
646 views

Alpha Zero vs Lc0 - time for self-play

Alpha Zero defeated Stockfish after only 9 hours of self-play. On the other hand, Lc0, has been training for several months and while attaining impressive strength (to say the least...) it's still not ...
9
votes
6answers
385 views

Is it possible for a move to be recomended by engines but rejected by professional human players?

Am wondering if it is possible for a move to be considered "good" by engines but is rejected by professional human players. One possible reason that I can think of is that the in order for this move ...
1
vote
1answer
145 views

In King's gambit, is Fisher's conclusion that “3…P-KN4 … is inexact” inexact?

I was reading A Bust to the King's Gambit by Bobby Fischer. The game starts with 1 P-K4 P-K4 2 P-KB4 PxP 3 N-KB3 [FEN "rnbqkbnr/pppp1ppp/8/8/4Pp2/5N2/PPPP2PP/RNBQKB1R b KQkq - 0 3"] Bobby ...
0
votes
1answer
62 views

How to define a countergambit?

Am wondering if there is a definition of a countergambit. My understanding is, a countergambit happens when one side plays a gambit, instead of capturing the pawn, the other side also sacrifices a ...
0
votes
2answers
76 views

Why white retreats the knight at the beginning of the game?

This is one variation from Bird's Opening: f4 e5 2. e4 exf4 3. Nf3 d6 4. d4 g5 5. h4 g4 [FEN "rnbqkbnr/ppp2p1p/3p4/8/3PPppP/5N2/PPP3P1/RNBQKB1R w KQkq - 0 6"] The most popular move is Ng1 ...
1
vote
1answer
142 views

Explanation of my game. Can someone explain the “why” to me?

Ok, here's a game that I won. I was playing vs someone on chess.com, and playing as black. My PGN is as follows (with comments from the analysis engine): [fen ""] 1. d4 e5 2. Nf3 {MISTAKE (-0.26) The ...
6
votes
2answers
393 views

Question about the move h5

I recently played a chess game whose link is: https://lichess.org/pCFw1h2w/black#5 After running a computer analysis, I found that in this position: I know that even though Stockfish does not tell ...
0
votes
1answer
66 views

What would you suggest I play vs. the Ruy Lopez, if I already play the Two Knights Defense vs. 3. Bc4?

I play the Two Knighs Defense as Black vs. 1. e4 e5 2. Nf3 Nc6 3. Bc4, in the spirit of counterattack. What would you suggest I play as Black vs. the Ruy Lopez?
1
vote
1answer
111 views

Kasparov's Immortal: Why didn't he play 10.Qg7?

Ok, I'm looking at his game to try to improve my own. I'm "mediocre" at best, but I enjoy a good game of chess. At the end of the 9th move by both players, Kasparov has his queen on Qh6. Now, I'm ...
0
votes
1answer
57 views

Would a classic full time armageddon tiebreaker be balanced?

I think that classic chess and rapid chess are two quite different kinds of sport. The classic chess title was undecided this year 2018. Why not use the armageddon rule, that black wins if tied in ...
1
vote
1answer
184 views

How to use nodestime option in Stockfish 10?

By looking at the uci option file of Stockfish 10 I found this line: o["nodestime"] << Option(0, 0, 10000); How exactly does one use nodestime?
0
votes
2answers
131 views

Can my pc calculate to depth 125 in 15 seconds, if a chess engine is programmed well?

I have a PC, an AMD RYZEN 7 2700 with minimal graphic card and 8 GB RAM. It has 8 cores and 16 threads. If a chess engine is programmed well will it be able to calculate to a depth of 125 in 15 ...

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