3 ms·
It only became identical by turn 20, that's midgame, not an opening.
by squeaky-clean 4y ago
It only became identical by turn 20, that's midgame, not an opening.
- roflyear 4y agoSo what? What does that matter? 20 moves of prep is not unusual. Also opening/midgame/endgame is not defined by # of moves. This was still very much in the opening, and it was still very much "known theory" as in games have been played in that same line.