8.2 (25 May 2006)
log window and tournament result window are resizeable
total number of openings in the tournament result
option to ignore error messages from AI

8.1 (13 April 2006)
Fixed bug: bad AI initialization if "Debug pbrains" was enabled
Added css style to tournament results

8.0 (25 March 2006)
option continuous game
keyboard shortcuts and toolbar are configurable
Undo and New game function during the internet game 
"Send message" dialog window is activated when a key is pressed and remains active after sending message
Clear button in log window, 
 option not to clear log after every game
message from msg.dat is displayed even if tah.dat is erroneous
command-line argument -p for a batch execution

7.9 (19 December 2005)
option to select folder where AI can store its data files

7.8 (23 November 2005)
time precision is 1 millisecond
double-click on player's name on the statusbar to show window to open AI 

7.7 (26 June 2005)
Undo uses a command TAKEBACK
initialization of AI is not included in time for a turn

7.6 (3 June 2005)
option to set game rule to "exactly five in a row win"
file info.dat for AI which communicate via old protocol

7.5 (3 May 2005)
network game between two human players
automatic openings are read from file openings.txt
all pipe commands can be logged to a file

7.3 (21 April 2005)
messages from AI which uses files protocol
RESTART is sent to AI instead of terminating it (but not during a tournament)
RECTSTART is used instead of START if the board is not square
CRC of ZIP or EXE files in a tournament result

7.2 (16 April 2005)
messages are saved to a text file during a tournament
Tournament\Games count
time for a turn is in seconds, but it can be a floating point number
a tournament folder is created automatically if it does not exist
results are sorted by points, ratio, mutual match

7.1 (10 April 2005)
repeating game when it was a tie
html table of tournament
tournament result is saved to a text file
number of games played and number of moves per match in the result
tournament is saved to a file so that aborted tournament can be resumed
memory limit is checked during tournament
external commands can be executed after each game or at the end of a tournament

7.0 (5 April 2005)
network tournament 
AI is restarted when it is unfairly terminated by the other AI
setting AI process priority
tournament result is not modal window and can be shown by menu Game/Result
each application instance has its own temporary directory

6.7 (28 March 2005)
tournament option to save only games when the first player lost
tournament results: maximal thinking time, wins/losses divided to started/not started
moves counter can start from 0 or 1
"Add" button in the tournament dialog can be used to select more exe files
command line parameter can be a PSQ file name

6.6 (13 March 2005)
automatic openings
toolbar
remaining times are displayed as lines under time numbers

6.5 (10 March 2005)
option to suspend pbrain when it isn't its turn

6.4 (7 March 2005)
measurement of memory during tournament
log window

6.3 (5 March 2005)
save to Gomotur format

6.2 (20 January 2005)
show coordinates around the board
option to index coordinates from 1
there is time information in saved positions 
all games of a tournament can be recorded
tournament result is sorted
tournament can be aborted by pressing Esc
open position with Ctrl ignores players information
AI working directory is TEMP
menu command Go to move
Undo works even if the computer thinks
    
6.0 (15 October 2004)
artificial intelligence moved to pbrain-pela.EXE
flip commands in the menu Skin
tournament
timeout check

5.4 (14 April 2003)
time measurement

5.2 (22 October 2002)
support for more languages
text color and winning line color added to skins

4.3 (10 July 2002)
skins

4.2 (12 March 2002)
commands Open, Save, Swap symbols
algorithm is faster

3.0 (10 September 2001)
Windows version
alfabeta depth search

1.0 (2000)
version for DOS in Pascal