Quality is another term for the exchange (rook for minor piece).

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5
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2answers
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How to test the quality of an opening book?

Over the years I manually maintained an opening repertoire in a PGN file (with several "games" per ECO index on average), and now realized I can generate different opening "books" from it - for SCID, ...
12
votes
1answer
176 views

Can this exchange-down endgame be explained succinctly?

I am interested in the following exchange-down endgame (assume White to move): [fen "6k1/5ppp/8/8/1r6/5KP1/5P1P/5B2 w - - 0 1"] In particular, I am wondering whether this is objectively drawn (my ...