So far, in our introduction to chess, we have named the chess pieces and examined how the Rook, Knight, Bishop, Queen, King and Pawn are moved. We noted that the chessboard is correctly ready for play ...

Algebra uses letters to represent unknown values. Unknown values are commonly represented by the letters x and y. There are several principles you need to know to be able to use algebraic notation.

WITH reference to Mr. Davison's letter in NATURE (vol. xxxiv. p. 571), I wish to point out that the subject of algebraic notation, not only for kinship, but for kinship and affinity, has been pretty ...