Chess Stack Exchange
Chess Stack Exchange

Questions tagged [transpositions]

A transposition is when a series of moves leads a game from one opening into another.

31 questions
10
votes
3 answers

How can one determine the opening or transposed opening from the existing pawn formation/structure?

I was once told that you can determine an opening or transposed opening just by how the pawns are structured on the board. Is this the method normally used to determine if an opening was transposed into another through a sequence of moves? I have…
xaisoft
  • 16,845
  • 10
  • 71
  • 140
8
votes
2 answers

1. e4 e6 2. d4 c5 - is this opening worth it?

While doing my spring cleaning, I came across an old book claiming to give a good opening chance for black. It's called the "Barcza-Larsen opening" and it is characterized by 2 .. c5: [fen ""] 1. e4 e6 2. d4 c5 I am very skeptical about this…
Klangen
  • 981
  • 7
  • 18
8
votes
1 answer

Why is 5...Be7 played before ...b5 in the main line of the Closed Ruy Lopez?

Here is what I've seen described as the main line of the Closed Ruy Lopez up to move 7: [fen ""] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 (5... b5 6. Bb3 Be7 7. Re1 d6) 6. Re1 b5 7. Bb3 d6 I'm interested in Black's fifth move in…
itub
  • 10,475
  • 1
  • 35
  • 49
6
votes
1 answer

What are all the most common transpositions between the Caro-Kann Panov–Botvinnik Attack with 5...e6 6. Nf3 Bb4 and the Nimzo-Indian Defence?

I would like to know what are all the most frequent transpositions between the two following openings: . The Caro-Kann Panov–Botvinnik Attack with 5...e6 6. Nf3 Bb4: [StartPly "12"] [FEN ""] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6…
Fate
  • 4,786
  • 2
  • 34
  • 68
6
votes
2 answers

Can a set of moves be a transposition and a variation?

I am confused about the differences between a transposition and variation. I know that a transposition is when you start of with one opening and a set of moves after that leads to another opening and a variation is a deviation from the main line of…
xaisoft
  • 16,845
  • 10
  • 71
  • 140
6
votes
3 answers

Marshall Defense 1.d4 d5 2.c4 Nf6 — transpositions

I know that the theoretical refutation of 1.d4 d5 2.c4 Nf6?! is supposed to be 3.cxd5 Nxd5 4.Nf3. Perhaps Black doesn't fear the refutation because he intends a gambit such as 3.cxd5 c6?! or 3.cxd5 c5?!. My question is not about the refutation…
bof
  • 3,710
  • 1
  • 18
  • 32
6
votes
1 answer

Three-fold repetition and null move

Added transposition table (this was tested alone and worked as expected), three fold repetition and null move pruning in my engine and wins more games but some of them end with three fold repetition even in win positions, played against the previous…
tttony
  • 227
  • 1
  • 5
5
votes
3 answers

How to understand which positions result from certain opening

I was watching Irina Krush's great lecture on YouTube and, at 20:06, she asks "Which opening is this position from?" The answer is apparently the Sicilian, which made me wonder. How do you understand which middle game positions result from certain…
Sinan Yaman
  • 538
  • 4
  • 8
4
votes
5 answers

Why is it said that beginning with 1. Nf3 2. c4 avoids the Benoni but beginning with 1. d4 2. c4 does not?

I have read a lot of messages on different Forums about the merits of beginning with 1.Nf3 or beginning with 1.d4. And a very big number of people said essentially this: One of the advantages of starting with 1.Nf3 2. c4 is that it avoids the Benoni…
Fate
  • 4,786
  • 2
  • 34
  • 68
4
votes
2 answers

What do QGA players usually play when White doesn't play exactly 1.d4 d5 2.c4?

If Black plays the KID, then Black can play Nf6, g6, Bg7, O-O, d6 against everything. If Black plays the QGD, then Black can play d5, e6, Nf6, Be7, O-O against everything. If Black plays the Slav ...Bf5, then Black can play d5, c6, Nf6, Bf5, e6…
Fate
  • 4,786
  • 2
  • 34
  • 68
4
votes
1 answer

Transposition Tables Bug, implementation produces different results

I've been writing my chess engine for 2 months now, and I've come across this bug that I can't manage to solve. Basically, when I disable my transposition table, the engine plays fine and the minimax search selects one of the best options every…
Miguel Silva
  • 43
  • 3
4
votes
1 answer

Hanham Variation Philidor Defense

I want to find a way of transposing into the Hanham Variation of the Philidor Defense, without a way for White to deviate. For example, in the normal move order, White may have the move 3. Bc4 or 3. Nc3, which I want to avoid. I have tried the Pirc…
user24344
3
votes
3 answers

Transposition into KID

I have looked at many grandmaster games where White starts off with 1.c4, which later mostly transposes into a King's Indian. However, Black could have immediately played 1...e5, which seems slightly better. Why would Black not take this…
user24344
3
votes
1 answer

Transposition Tables

Are transposition tables (in engines) used for one or multiple games? My current knowledge of transposition tables is that when an engine searches the game tree, there will sometimes be positions that have already been calculated earlier. A…
Tauist
  • 616
  • 5
  • 11
3
votes
2 answers

How this game is denoted as French Advanced Variation?

I had started playing this game with Scandinavian Defense opening. How it is been denoted as French Advanced variation as of 3rd move. Please refer to the attached screen-shot.
Inc Operations LLC
  • 47
  • 4
1
2 3