Tree path 4 levels Queen's Pawn Game › Blackmar-Diemer Gambit › Blackmar-Diemer Gambit › Blackmar-Diemer Gambit Declined: O'Kelly Defense
- Chess Codex
- Queen's Pawn Game D00
- Blackmar-Diemer Gambit D00
- Blackmar-Diemer Gambit D00
- Blackmar-Diemer Gambit Declined: O'Kelly Defense D00 you are here
Blackmar-Diemer Gambit Declined: O'Kelly Defense
Overview
Blackmar-Diemer Gambit Declined: O'Kelly Defense is a gambit, classified under ECO code D00 within the Closed & Semi-Closed Games family. As with all gambits, one side sacrifices material early — usually a pawn — in exchange for development, open lines, or initiative.
The Closed & Semi-Closed Games group covers closed and semi-closed games — 1.d4 systems characterised by long strategic manoeuvring rather than early tactics.
The line arises from 8 plies — specifically the moves 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 c6.
It is a variation of Blackmar-Diemer Gambit, which itself descends from the root opening Queen's Pawn Game.
Step through the moves on the interactive board below, review the live Lichess statistics, or play this position against Stockfish at one of six difficulty levels.
- ECO code
- D00
- Group
- Closed & Semi-Closed Games (D)
- Plies
- 8
- Parent
- Blackmar-Diemer Gambit
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
Description
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