A school of chess means a chess player or group of players that share common ideas about the strategy of the game. There have been several schools in the history of modern chess. Today there is less dependence on schools – players draw on many sources and play according to their personal style.
In 1749, François-André Danican Philidor published Analyse du jeu des Échecs. This was the first book to discuss the strategy of chess in the whole in detail. It was also the first to discuss the interplay of pieces and pawns in the game. Philidor believed that maintaining the mobility of pawns was the most important strategic factor of chess, and he discussed pawn structure, particularly isolated pawns, doubled pawns, and backward pawns.
Philidor's writings were widely praised and misunderstood for 90 years. His ideas were taken up by the English school in the 1840s. In 1925 Aron Nimzowitsch recognized the importance of pawn mobility. Philidor has increasingly been recognized as the founder of modern chess strategy (Hooper & Whyld 1992:359).
The Modenese school is due to three 18th-century players known as the Modenese Masters: Domenico Lorenzo Ponziani, Giambattista Lolli, and Ercole del Rio. They recommended playing the Italian Game opening. In contrast to Philidor's idea of pawn structure and mobility, the Modenese school emphasized rapid development of the pieces for an attack on the opposing king, aiming for checkmate or winning material in the process. This style of play was used by Gioachino Greco, Alessandro Salvio, and other Italian players of the 16th century (Sunnucks 1970:309–10).