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How to play as black in the exchange Caro-Kann?

I used to be a Caro-Kann player and had great results in it against all lines except the exchange variation. I had a horrible score there and I wish to remedy that. What are some good middlegame plans ...
anti - Marshall's user avatar
-5 votes
0 answers
37 views

Who do you believe? [closed]

In his treatise: "Lasker's manual of chess", the aforementioned author portrays a compendium of chess notions, based upon prose, maxims and engagements. The collected works of Aron ...
Harry's user avatar
  • 1
2 votes
1 answer
65 views

Longest checkmates with the biggest material disadvantages in "open" positions?

We can ask a question: What are the longest checkmates with the biggest material disadvantages? What, approximately, is the function between length of the checkmate and possible size of the material ...
Flowy Poosh's user avatar
0 votes
1 answer
31 views

How play this rook end game

In the video Can 3 Women Beat A Grandmaster? https://youtu.be/umCJkXuow9I?si=a-aHT-SrbNdcgJU_&t=1071 White: Dina Belenkaya Black: Danya Naroditsky Engine show white are winning, but the thing ...
Juan Carlos Oropeza's user avatar
1 vote
0 answers
42 views

How to play with my child?

I have an online rating of around 1500 and my 8-year-old daughter's playing strength is approximately 900 and she LOVES playing with me, despite losing most of the time. Here I am seeking suggestions ...
Zuriel's user avatar
  • 9,003
-2 votes
0 answers
39 views

A boy named Sue (?) [closed]

[Event "Rated Chess960 game"] [Site "https://lichess.org/U9dTYHSJ"] [Date "2024.03.01"] [White "healLan"] [Black "MisterHey"] [Result "1-0"] ...
Harry's user avatar
  • 1
3 votes
0 answers
113 views
+150

I have a code in Python which should compute fully optimal moves in an endgame for Black and White player, but it seems that k is playing suboptimally

In this example "'fen': '7Q/8/8/6k1/2K5/8/8/8 w - -', 'moves_to_mate': 9" should be "'fen': '7Q/8/8/6k1/2K5/8/8/8 w - -', 'moves_to_mate': 11" according to Stock-Fish. EDIT The ...
user2925716's user avatar
1 vote
1 answer
74 views

More accurate estimate of chess games possible

I have heard of Shannon's number (10^120) which is the supposed number of possible chess games computed in the 1950s. But Shannon's estimate is criticised for including illegal moves. What is a truer ...
anti - Marshall's user avatar
2 votes
1 answer
49 views

What's the maximum number of pieces attacking a single square?

I'm thinking about developing an optimized chess database file format. I can record a single move in 12 bits: two squares, each one with two coordinates, where each one is a number from 1 to 8. ...
Danya02's user avatar
  • 121
3 votes
2 answers
312 views

Trying to understand evaluation

I'm looking at this position. [Title "White to move: +10"] [StartFlipped "0"] [FEN "r3kb1r/2pnp1p1/p3Bn1p/8/Np1Pq3/4B3/PP21PPP/R2Q1RK w kq - 0 1"] Material is even, and ...
Martin Argerami's user avatar
3 votes
1 answer
101 views

Most delaying moves before checkmate

Consider a position where if was player A's turn, they could make a series of moves ("the mating sequence") with forced mate. However, it is player B's turn, and they can make a series of &...
Steve Bennett's user avatar
1 vote
1 answer
57 views

Resources on the closed Italian

What are some good books, courses, etc to learn the slow Italian with d3? I want to start playing the slow Italian with d3 as it keeps lots of pieces on the board and leads to rich middle games and am ...
anti - Marshall's user avatar
1 vote
0 answers
25 views

Training data retrieval

I am currently developing a chess engine which uses minimax algorithm to evaluate chess positions. In addition to this I want to improve my current static evaluation with reinforcement learning. I ...
Martin Šváb's user avatar
-4 votes
0 answers
34 views

What happened here? [closed]

[Event "Rated Atomic game"] [Site "https://lichess.org/46fSunDj"] [Date "2024.02.27"] [White "xXQuagmire_ToiletXx"] [Black "healLan"] [Result "0-...
Harry's user avatar
  • 1
-3 votes
0 answers
50 views

Is this the Two Knights Defense? [closed]

[Event "Rated Bullet game"] [Site "https://lichess.org/FnF0Yfwo"] [Date "2024.02.27"] [White "healLan"] [Black "fazermen"] [Result "1-0"] [...
Harry's user avatar
  • 1
-1 votes
0 answers
54 views

'Prophylaxis' - modern initiative description, or verbose smoke-screen [closed]

The present chess played may utilize varied terminologies - you may have heard about. The terms: 'good/bad' bishop, dark-squared dominance, winning the exchange - are banded around like apples and ...
Harry's user avatar
  • 1
13 votes
2 answers
7k views

"Daddy, why don't you take the e4 pawn?"

I play with my 8-year old daughter chess often and about half of our games start with these moves: [FEN ""] [StartFlipped "1"] [StartPly "7"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 ...
Zuriel's user avatar
  • 9,003
3 votes
1 answer
57 views

How can I register to FIDE being in a different country where I don't have citizenship or residency?

I come from Bangladesh and I am doing my bachelor's degree in Australia as an international student. Unfortunately, I didn't register with FIDE under the Bangladesh Chess Federation when I was in my ...
eisha enan's user avatar
1 vote
0 answers
124 views

Can you force stalemate with KB/K?

Since the practical answer, pending the old suggestions to rate stalemate different, is "Who cares?", I doubt "official" tablebases exist. (Since winning the KNN/KP endgame depends ...
Hauke Reddmann's user avatar
0 votes
0 answers
55 views

How do I test my static evaluation function?

I am programming a basic chess AI, within it I have my evaluation function. It is simple, only uses piece square table values, and does basic calculations for the pawn structure and king safety. How ...
bbqribs's user avatar
  • 13
1 vote
3 answers
107 views

Why is the next best move Nf3, instead of moving Bg5?

I have reached to this position starting from Queens' Gambit, and in this position Stockfish 14 is suggesting that the next best move is to bring my knight out instead of moving my dark squared bishop,...
commonSense's user avatar
1 vote
0 answers
42 views

I have a simple code which has a bug at the particular place given below, but I'm unable to detect it exactly and fix it

I have asked a similar question elsewhere and I have detected where roughly is a problem. It is in this function which gets processed for node "1" only, see the output section below: (I'm ...
user2925716's user avatar
2 votes
0 answers
97 views

King and three knights vs king․

Is there any recorded official game in history where the king and three knights play against the lone king in the endgame? I know it can be a very rare case where in practice both knights stay until ...
Arsen Vardanyan's user avatar
2 votes
2 answers
76 views

Do endgame tablebases only handle legal positions?

The title is my question for now. I also wonder if similar legality concerns may reduce the number of input FENs as checkmates used as input to the retrograde proofing or construction process. In ...
dbdb's user avatar
  • 162
3 votes
0 answers
85 views

Why this Python code for a simple endgame yields wrong results?

I have a Python code as below for a trivial (for a human) endgame, but I'm unable to make it output correct results. I'm seeking for a fully optimal play by both player: the stronger player should try ...
user2925716's user avatar
1 vote
2 answers
57 views

"Simplest" and "least memorization demanding" way/resource to learn endgames [closed]

What is the simplest and "least memorization demanding" way or resource to study endgames? I'm following a course on the essence (most important concepts) of Dvoretsky's endgame manual which ...
ela's user avatar
  • 267
0 votes
1 answer
48 views

How to calculate FIDE's Perfect Tournament Performance (PTP)?

How to calculate FIDE's PTP? The PTP is defined in https://handbook.fide.com/chapter/TieBreakRegulations042024 as: This is a whole number corresponding to the lowest rating that a participant should ...
clp's user avatar
  • 235
-1 votes
0 answers
29 views

In CQL can I get just the final position(s) after executing the query

I want to save the final position or positions in another pgn file after cql executed. That is, I write a query for stalemate in cql. Currently I get whole games. i just want final positions in a list....
Dinesh Gera's user avatar
0 votes
1 answer
55 views

Difficulty of problems for different rating levels

For club players, it is pretty well-known that certain types of problems are harder than others. Of course, mate in 4 is usually harder than mate in 1, but I am talking more about things like the ...
Peter Flom's user avatar
0 votes
0 answers
41 views

What is an "opening edge" in computer terms

When analysing with stockfish on chessbase, there are often positions reached in openings where the engine's eval is around +0.2 ish and the verdict is "position is equal". So at what ...
anti - Marshall's user avatar
0 votes
0 answers
38 views

Smallest size of the transposition table that still makes sense

I've implemented a chess engine with iterative deepening, triangular table for PV and aspiration window. The engine runs on a microcontroller with 1MB of RAM. I read in the Internet everything I could ...
Kajetan Świtalski's user avatar
4 votes
2 answers
1k views

In the London, after 1.d4 d5 2.Bf4 c5 3.dxc5 Nc6 4.Nf3, why is "blocking your bishop" the best move

In this situation: [FEN ""] [StartFlipped "1"] [StartPly "7"] 1.d4 d5 2.Bf4 c5 3.dxc5 Nc6 4.Nf3 Stockfish 16 really does not value getting the bishop out (Bg4 and Bf5 ...
FluidMechanics Potential Flows's user avatar
3 votes
1 answer
146 views

How often can the initial position be repeated under FIDE tournament rules?

Recently a game was played where two GMs swapped kingside and queenside knights and then agreed a draw (and got their just dessert): How often can the starting position be repeated in a game without ...
Hauke Reddmann's user avatar
0 votes
1 answer
87 views

How to use massive advantage in early opening - need help on where to learn

Context: I am around 15-1600 in terms of Chess.com blitz. My question was motivated by watching a Ben Finegold video where as a joke he played Ng8 Nf6 Ng8 Nf6 repeatedly at the start of the blitz game ...
Chris Sanders's user avatar
9 votes
1 answer
995 views

Who is this chess player photographed on Sputnik Mediabank #972762?

Can someone identify the chess player in this photo? The source of the photograph is Sputnik Mediabank #972762, where the caption says: International chess Grandmaster Mikhail Tal watching a game. ...
wim's user avatar
  • 634
1 vote
1 answer
91 views

Which FIDE ratings correspond to the different Stockfish levels at 5+3?

Lichess has a Play With The Computer option on its main site, which offers Stockfish levels 1 through 8. What would their FIDE ELOs be with time control set to 5+3? (Some people on Lichess have FIDE ...
MWB's user avatar
  • 475
-1 votes
1 answer
113 views

What is the best move in algebraic chess notation? [closed]

I can't fine the best move with algebraic chess notation. [Title "White to Move"] [FEN "r3n1rk/q3NQ1p/p2pbP2/1p4p1/1P1pP1P1/3R4/P1P4P/3B2K1 w - - 0 1"]
user36777's user avatar
0 votes
1 answer
108 views

Rossolimo attack resources

I am in the middle of crafting my chess repertoire from scratch and have saved up quite a bit of money for the past 3 years and I want to buy resources that are most dynamic against a particular black ...
anti - Marshall's user avatar
3 votes
1 answer
89 views

Edit and save pgn files with SCID

In SCID, how can I edit a pgn file and save to a new file after I modified it? For example below, I have deleted some games in the 'game list' panel. But when I do Database - Export all filter games, ...
jf328's user avatar
  • 2,478
1 vote
2 answers
137 views

Do queenside attacks have an advantage over kingside attacks?

I think I have noticed a pattern in my games in which I have castled long and my opponent castles short, then we both pawn storm to attack the kings. Typically this happens after I play the ...
Steve Bennett's user avatar
2 votes
1 answer
70 views

Need more clarity on the following chess concepts - planning, strategy, schematic thinking, backward thinking

I'm studying chess middlegame, specifically about planning. I'm trying to broaden my understanding of the terms - Planning, Strategy, Schematic thinking, and Backward thinking.
Arun J's user avatar
  • 1,867
5 votes
2 answers
2k views

What is the shortest game that has never been played?

In the publicly available databases (at all levels of play, including Lichess), what is the shortest unique sequence of moves from the opening which has never occurred? (That is, if it were played, it ...
Steve Bennett's user avatar
0 votes
1 answer
81 views

How can white fight for the initiative in the open Tarrasch french

In the French tarrasch after black plays c5, how can white fight for the initiative. I played the closed tarrasch and really enjoy the positions reached after Korchnoi's gambit and want to reach a ...
anti - Marshall's user avatar
1 vote
0 answers
344 views

DTM in a random N-piece position

Formulate how many plies are the DTMs if there are multiple checkmate variations (Depth to Mate ignoring 50-move rule) for a random N-piece chess position if any checkmate exists, (and also consider ...
nirates biadenroc's user avatar
0 votes
3 answers
209 views

"Simplest" opening against 1.e4

What do you think is the "simplest" opening for black against 1.e4? With "simplest" I mean an opening which is solid enough to bring you equality (or even give you an advantage if ...
ela's user avatar
  • 267
0 votes
2 answers
93 views

Alternative to the Sämisch gambit

[FEN ""] [Startply "12"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 c5 I recently started playing the KID and am not comfortable with the c5 gambit against the ...
anti - Marshall's user avatar
0 votes
1 answer
88 views

Regarding the wide repertoires of world champions

I am making a Fischer-esque repertoire, E4 as white and KID and Sicilian against D4 and E4 respectively. But I cannot help but wonder why almost all the world champions except for Fischer had very ...
anti - Marshall's user avatar
0 votes
0 answers
11 views

Custom game tags in Chessbase 17not showing in pgn export

I recently treated myself to Chessbase 17. When anotating my games I like to add a tag with the time control of the game. I have done this in the game's details and saved. I can see the custom tag in ...
Razor's user avatar
  • 69
2 votes
1 answer
88 views

Are there chess variants than involve only cooporation and no competition?

One thing I've noticed is that even the most unusual chess variants tend to involve some sort of a competition. For instance in 4 player chess teams the members of the same team cooperate with each ...
Anders Gustafson's user avatar
3 votes
1 answer
288 views

Why does the engine evaluate black's position as better here?

I recently played a game as white, that ended in a draw. I thought I had a big advantage at some point, but when analyzing it, the engine says that black was actually in favor ~ -1.1. I was a central ...
d4zed's user avatar
  • 1,197

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