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authorMarkus Uhlin <markus@nifty-networks.net>2023-12-07 21:31:49 +0100
committerMarkus Uhlin <markus@nifty-networks.net>2023-12-07 21:31:49 +0100
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+
+blitz
+
+ There are four types of regular (not wild or bughouse) chess played on this
+chess server: Untimed, Lightning, Blitz and Standard.
+
+ A game is "Blitz" if the expected duration of the game is between 3 and 15
+minutes per player. "Expected duration" is determined by a formula that takes
+into account both the Start time and the Increment (Inc) value. Here is the
+formula:
+
+ Expected duration = (Start + Inc*2/3)
+
+Thus, a Blitz game is one that is expected to last between 3 and 15 minutes
+for each player (or from 10 to 30 minutes combined). Lightning games are
+those with expected durations less than 3 minutes per player, while Standard
+games are those with expected durations more than 15 minutes per player.
+
+ The following table shows the dividing lines between Blitz and Lightning on
+the one hand and Blitz and Standard on the other hand. those two types of
+matches. [Thanks to schwartzeer for the original calculations between Blitz
+and Standard. :) ]
+
+ Slowest Lightning Fastest Blitz Slowest Blitz Fastest Standard
+ ------------------------------------ ------------------------------------
+ Mins Incr Mins Incr Mins Incr Mins Incr
+ ------------------------------------ ------------------------------------
+ 0 4 0 5 0 22 0 23
+ 1 2 1 3 1 20 1 21
+ 2 1 2 2 2 19 2 20
+ -------- 3 0 3 17 3 18
+ 4 16 4 17
+ 5 14 5 15
+ 6 13 6 14
+ 7 11 7 12
+ 8 10 8 11
+ 9 8 9 9
+ 10 7 10 8
+ 11 5 11 6
+ 12 4 12 5
+ 13 2 13 3
+ 14 1 14 2
+ -------- 15 0
+
+ For example, a game with a Start of 2 minutes will be Blitz if the Increment
+is from 2 to 19; but it will be Lightning with an Inc of 0 or 1 and Standard
+if the Inc is 20 or higher.
+
+ You can list logged on users according to their Blitz ratings by typing "who
+b" (by default, ratings in 'who' listings will be blitz unless you specifiy
+otherwise). "Blitz" is also a variable that can be used in formulas in order
+to screen match requests.
+
+See Also: formula lightning match standard untimed who
+
+[Last modified: December 25, 1995 -- Friar]
+