English edit

 a b c d e f g h  
8        8
7        7
6        6
5        5
4        4
3        3
2        2
1        1
 a b c d e f g h  
Pawn chains in the French Defence

Noun edit

pawn chain (plural pawn chains)

  1. (chess) A locked diagonal formation of pawns, each one supported by a friendly pawn diagonally behind and blocked by an enemy pawn directly ahead.

Further reading edit