Assessment of positions: Study of position can be easier with the following rules: 1) 2) 3) 4) 5) 6) 7) Material relationship between the forces Presence of direct threats Position of kings, their safety Possession of open lines Pawn structure, weak and strong squares The centre and space Development and position of pieces Reference points: 1) 2) 3) 4) King safety Activity of pieces Material All other factors like: i) Pawn structure ii) Weaknesses iii) Space advantage iv) Passed pawns v) Control of centre vi) Bishop pair