Chess — Bishop's Opening C23 : opening moves and positions
Chess · ECO C23
An ECO code groups opening lines, not one forced position. Step through legal notation from the CC0 Lichess dataset. This is a study viewer, without engine evaluation or a claim that a line is best.
1. e4 e5 2. Bc4
FEN: rnbqkbnr/pppp1ppp/8/4p3/2B1P3/8/PPPP1PPP/RNBQK1NR b KQkq - 1 2
Source data · C23
24 PGN · 24 FEN · Opening line: 12
- Bishop's Opening:
1. e4 e5 2. Bc4 - Bishop's Opening: Boi Variation:
1. e4 e5 2. Bc4 Bc5 - Bishop's Opening: Calabrese Countergambit:
1. e4 e5 2. Bc4 f5 - Bishop's Opening: Khan Gambit:
1. e4 e5 2. Bc4 d5 - Bishop's Opening: Philidor Counterattack:
1. e4 e5 2. Bc4 c6 - Bishop's Opening: Calabrese Countergambit, Jaenisch Variation:
1. e4 e5 2. Bc4 f5 3. d3 - Bishop's Opening: Lewis Gambit:
1. e4 e5 2. Bc4 Bc5 3. d4 - Bishop's Opening: Lopez Variation:
1. e4 e5 2. Bc4 Bc5 3. Qe2 - Bishop's Opening: McDonnell Gambit:
1. e4 e5 2. Bc4 Bc5 3. b4 - Bishop's Opening: Philidor Variation:
1. e4 e5 2. Bc4 Bc5 3. c3 - Bishop's Opening: Stein Gambit:
1. e4 e5 2. Bc4 Bc5 3. f4 - Bishop's Opening: Anderssen Gambit:
1. e4 e5 2. Bc4 b5 3. Bxb5 c6
Game and item names below retain the source’s English identifiers so you can find them in the linked documentation.
Related game questions
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Using this reference
For Bishop's Opening, start at the first position and step through the moves rather than memorizing the final board. After each move, look for the piece that moved and the squares it now influences. The same opening name can cover several branches, so use the selected line’s move order as your reference.
The final position in the viewer is where this recorded line ends, not a verdict on the position. Choose another listed branch to see where the paths separate. The viewer displays legal source moves; it does not provide an engine evaluation or establish a forced continuation.
Sources and scope
Public source snapshot; changes after this version may differ. 2026-11-03
chess-a · CC0
chess-b · CC0
chess-c · CC0
chess-d · CC0
chess-e · CC0