Terra Help and Information

bullet1 Help!

bullet2 Output from Terra

bullet3 The log-file

Logfile=0 or 1 (on command line Logfile on/off)

if Logfile=1, Terra will write information on it's log file.

The log file will get the name logxxx.txt, where xxx is a number by choice of Terra. The log file is found in the directory Games.

  • The PV lines
    The PV (Principle Variation) line produced from Terra is following the Winboard standard:

    Depth
    Score
    time  
    #Nodes
    PV line
    4
    -18
    9
    3835
    Nf6 d5 Ne7 Bb5 Nxe4 Nxe5
    4
    -3
    25
    9002
    Bb4+ Bd2 Nf6 d5 Bxd2+ Nbxd2
    4
    15
    30
    12108
    exd4 Nxd4 Bb4+ Bd2 Nf6 Bxb4 Nxb4
    5
    20
    45
    15301
    exd4 Nxd4 Bb4+ Bd2 Nf6 Bxb4 Nxb4

    In this example Terra changes it's mind 3 times during iteration 4 until the move exd4 is regarded as best. In iteration 5 Terra still thinks that exd4 is the best move and with the same main line.


    When Terra is within the book or Postbook the line will have a different look:

    Not applicable
    		  
    Each bookmove with a value inside parenthesis. The value is based on move statistics.
     2       62       3        5
    Book   
    d2d4 (62) Bf1c4 (60) Bf1b5 (48)  c2c3 (54) Nb1c3 (50)


                                                                   



     
  • The search statistics
    After the search Terra will give statistics from the search:

    Search score=+70;
    This is the search score from the searched point of view.
    Mtrl=0;
    This is the material balance after the move is performed.
    Time=...;
    This is the time from go until Terra stopped to search
    EvalBreaks=...;
    Number of times Terra stopped during evaluate due to "impossible" situation.
    #Nodes=...;
    Number of nodes searched
    QS=...%;
    Number of Quiescence nodes in percentage of #Nodes
    NullMvs=...%%;
    Number of Nullmoves started in promille of #Nodes
    Evals=...%;
    Number of times the evaluate function is performed
    n/s=...;
    Number of nodes per second. The search speed.
    #Ext=...;
    Number of Extensions detected
    #Illegal=...;
    Number of Illegal moves found
    #Evasion=...;
    Number of Check evasions made
    1FH=...;
    Number of times the first move generated was the best, in percentage
    Hfound=... ...%
    Number of Hash entries found and the hit percentage
    HEfound=... ...%
    Number of EvalHash entries found and the hit percentage
    HPfound=... ...%
    Number of PawnHash entries found and the hit percentage



     

bullet3 The game-file

Logfile=0 or 1 (on command line Logfile on/off)

if Logfile=1, Terra will write information on not only it's log file but also the moves in PGN-format in a game file..

The game file will get the name gamexxx.pgn, where xxx is a number by choice of Terra (the same number as corresponding log file). The game file is found in the directory Games.

Please give your comments in WinBoard Forum or email me. This document was updated 2004-08-02.