Old ideas got that way ...

Old ideas got that way because they proved useful. Who said that? I just found it on the web. But I like it. The Blackmar-Diemer is an old idea, certainly old enough to be out of fashion. Yet old ideas, especially in the hands of old chessplayers, can still prove useful. Take this BDG, Teichmann Defense, from the World Seniors:

Win One, Lose One

A couple of Blackmar-Diemers turned up in this week's TWIC. White wins an Euwe Defense transposition from the Caro Kann, but loses a Teichmann. Oh, well...

(Use the pull-down menu to get to the second game)