Shakmaty Bereolos - The Official Chess Site of Peter Bereolos

Ruben Fine's Basic Chess Endings (David McCay, New York 1941) was one of the first English language endgame encyclopedias. It was long recognized as one of the finest texts on the endgame. However, with a work of this magnitude, especially in the days before computers, it was inevitable that many improvements in the analysis would be been found, some even overturning the evaluation of positions. My original intention in starting this page was to try to compile these improvements on the web.

In 2003 an edition revised by Pal Benko was published by Random House. The new edition converted the text to algebraic notation, renumbered the positions, and cleaned up some of the analysis. However, some analysis remains incorrect in the new edition, so I have decided to continue to maintain this page.

The overall spirit of this page is that we can all learn from our mistakes and the mistakes of others as Mark Dvoretsky has pointed out with his book Tragicomedy in the Endgame: Instructive Mistakes of the Masters. My intention is to provide a free online posting of these corrections. I do not wish to copy the compilations of others, so I will be rebuilding the list with (hopefully) proper credit to those who first made the discoveries, although if the position has been solved by tablebase I have not always tried to research who may have previously discovered the correction. If you have additions to this list please send me email with the position number, corrected analysis, and citation (magazine article, computer analysis, new original analysis, etc.). I am especially interested in positions that have not been corrected in the latest edition.

On these links, I'll use Nunn's Convention as follows: ! signifies the only move to win or draw. ? signifies a move that changes a win to a draw or a draw to a loss. ?? signifies a move that changes a win to a loss.

The positions numbers refer to the Fine edition. The update, if any, in the Benko edition, is noted at the bottom of each page.

King and Pawn Endings


Knight and Pawn Endings


Bishop and Pawn Endings


Minor Piece Endings


Rook and Pawn Endings


Rooks and Minor Pieces


Queen Endings