Author: guy haworth
Date: 02:27:29 11/27/01
Go up one level in this thread
The notation is as follows:
''' the only value-preserving move
- after ignoring rare physical symmetry
'' the only value-preserving move
- after ignoring both rare physical symmetry and 'time-wasting moves'
(whereby the defender can at least force an attacker back to the current
position if the win is to be preserved.)
' the only optimal [in terms of some metric, e.g. DTC, DTM or DTZ) move
- after ignoring rare physical symmetry
- DTC = Depth to Conversion (mate and/or force-change)
- DTM = Depth to Mate
- DTZ = Depth to (move-count) zeroing move
(mate and/or force-change and/or Pawn-push)
<degree-sign> the only legal move (after ignoring rare physical symmetry)
This notation was defined in 1999 with the encouragement of Noam Elkies and has
the merits of being:
- unobtrusive
- complementary to the subjective marks !, ?, !? etc
- semi-compatable with a .pgn reader
they don't get in the way but they do get 'wiped out'
G
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