CHESMAYNE

Midi: Across

Coordinates

The coordinates of a chess MP/mp with respect to,

01 The XY axis. 

02 The acentric notation (B$A, B, C, D etc) or, the centric notation. 

03 Co-ordinate Notation: a notation in which each cell has its own unique location and identified by its cell co-ordinates.   The ‘Chesmayne Notation’ is an example of such a notation.   ‘Standard Notation’ and ‘Continental Notation’ are other examples.   There are two versions: full notation, and abbreviated (the departure cell is given only when necessary) ie,

01A XY Standard Notation: 01A PA5-$E02/E04   -   01B KT2-$B08/C06

01B XY Abbreviated Notation: 01A PA5-E04   -   01B KT2-C06

02A Centric Notation: 01A PA5-C04/A02   -   01B KT2-D21/B10

02B Abbreviated Centric: 01A PA5-A02   -   01B KT2-B10

03A Algebraic Notation: 1 e2-e4   -   N-b8-c6

03B Abbreviated Algebraic: 1 e4   -   Nc6

 

Unique cell identifiers, made up of a number indicating the rank and a letter indicating the file. 

Russian Cyrillic (Russian players also use Latin for recording the moves of a game), German and English have differing ways of representing the moves of the MPs/mps ie,

04A Russian: 1 Cf1:c4 (C = Bishop)

04B Abbreviated Russian: 1 C:c4 (colon indicates capture)

05A German: 1 Lf1-c4 (L = Bishop)

05B Abbreviated German: 1 Lc4

06A English: 1 Bf1xc4 (B = Bishop)

06B Abbreviated English: 1 Bxc4 (x indicates capture)

07A XY Standard Notation: 01A BS2-$F01*C04-PA6

07B XY Abbreviated Notation: 01A BS2*C04 (asterisk indicates capture)

08A Acentric Notation: 01A BS2-D06*B12-PA6

08B Abbreviated Acentric: 01A BS2*B12 (asterisk indicates capture)

          In the Algebraic Notation the departure cell is only given if two MPs/mps of the same type could move to the arrival cell (this occurs quite often with the KTs, KT1 and KT2 or, RO1 and RO2).   In the ‘Centric Notation’ and the XY Notation this anomaly does not arise as each MP/mp is identified by a number ie, PA1, PA2, PA3, KT1, KT2, BS1, BS2, QU1, QU2 etc. 

          Astronomers use co-ordinates corresponding to longitude and latitude on the Earth to locate astronomical objects.   These co-ordinates relate to the positions of stars instead of points on our Earth’s surface.   The equivalent of latitude is called declination and is measured, like latitude, from the equator (0 degrees) north and south to the poles (+ or - 90 degrees).   An observer on the Earth’s equator would see a star with 0 degrees declination pass directly overhead while one with a declination of +90 degrees would lie due north on the horizon.   At the latitude of the ‘Oirish/British Islands’, say 52 degrees north, an object with a declination of +52 degrees would pass overhead, and the north pole of the sky is raised to 52 degrees above your northern horizon.