Connected Passed Pawns

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Connected Passed Pawns, two or more passed pawns on adjacent files, either as duo mutually protecting their stop squares, or as protected passed pawn defended by the second passer, may advance in tandem and are more difficult to blockade than isolated passers. In a chain they may be best countered by a bishop blocking or controlling their stop squares. The opponent king can also hold the chain on both stop squares, but is often obligated to stay inside the square of the more advanced peak. Connected passers are in particularly strong in rook endgames, but may be worse than two distant isolated passers in pawn endgames.

=See also=
 * Duo Trio Quart (Bitboards)
 * Defended Pawns (Bitboards)
 * Hanging Pawns
 * Protected Passed Pawn
 * Tarrasch Rule

=Forum Posts=
 * WAC.002 by evaluation? by Luca Hemmerich, CCC, April 18, 2010 » Win at Chess
 * Improving SF passer code by Lyudmil Tsvetkov, CCC, March 26, 2015 » Stockfish

=External Links=
 * Connected pawns from Wikipedia
 * Protected passed pawn from Wikipedia

=References=

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