Tree path 4 levels King's Pawn Game › Caro-Kann Defense › Caro-Kann Defense › Massachusetts Defense
- Chess Codex
- King's Pawn Game B00
- Caro-Kann Defense B10
- Caro-Kann Defense B12
- Massachusetts Defense B12 you are here
Caro-Kann Defense: Massachusetts Defense
Overview
Caro-Kann Defense: Massachusetts Defense is a named branch in the Semi-Open Games group of chess theory, classified under ECO B12.
The Semi-Open Games group covers semi-open games — replies to 1.e4 where Black declines the symmetrical 1…e5 in favour of an asymmetric pawn structure.
The line arises from 4 plies — specifically the moves 1. e4 c6 2. d4 f5.
In the opening tree, this line branches off from Caro-Kann Defense, part of the broader King's Pawn Game system.
Use the board to walk through every move, check how the position has scored on Lichess, or take it head-to-head against Stockfish.
- ECO code
- B12
- Group
- Semi-Open Games (B)
- Plies
- 4
- Parent
- Caro-Kann Defense
This overview is generated automatically from the opening's metadata. A more detailed, human-written description is on the way — and you can speed it up by suggesting one yourself.
Statistics from Lichess
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Source: Lichess Opening Explorer · cached
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