ICCF Numeric notation[ edit ]

18 2838 4858 6878 88
1727 3747 5767 7787
16 2636 4656 6676 86
1525 3545 5565 7585
14 2434 4454 6474 84
1323 3343 5363 7383
12 2232 4252 6272 82
1121 3141 5161 7181

ICCF numeric notation is the official chess game notation for all International Correspondence Chess Federation games.

In numeric notation all the squares are numbered with a two-digit number. In this simple coordinate system the first digit describes the rank and the second one the file. A move is defined by pairing two of these two-digit coordinates together: the move that would be written 1. e4 in algebraic notation would be written 1. 5254 in Numeric. The pawn starts from square (5,2) and moves to (5,4). Neither the type of the moving piece nor captures are specifically marked in Numeric notation - all moves, except for pawn promotion, consist of only four digits.

In pawn promotion a fifth number must be added: "1" for queen, "2" for rook, "3" for bishop and "4" for knight. For instance in the case of a pawn on f7 moving to f8 and promoting to a rook would be 67682. A four digit notation where the ending rank is omitted (because it is always "8") can also be seen: 6762. However, this is confusing and against the standard.

For castling, the king start position and end position are recorded: for white, 5131 (queen side) and 5171 (king side); for black, 5838 (queen side) and 5878 (king side).

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article No 524 / last change on 2005-06-29, 06:54am

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This article is based on the article ICCF Numeric notation from the free encyclopaedia Wikipedia and stands under the GNU-Licence for free documentation. In the Wikipedia a list of the authors is available.

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