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*                           Pedone 1.7                                        *
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DESCRIPTION

This is a new release of Pedone, an UCI chess engine written in C.
It's a console program and it needs a graphical interface to work like 
XBoard/Winboard (with Polyglot) or Arena.
It's optimized to work with syzygy.When the engine use the tablebases and the 
search reach a won position it gives a very high mate score. This score is a
very rough estimation of the distance to mate that depends on the material
score of the position, an high advantage in material gives a shorter distance 
to mate, a low advantage gives an higer distance to mate. This is necessary
to enter in a win position with the greatest material advantage. 
For whatever you need you can contact me at the following email address:

0xfab10@gmail.com
Fabio Gobbato


THE PACKAGE

The package includes the following files:

- Pedone_win_bmi2.exe   - Executable for 64 bit windows OS and CPU with BMI2 instructions
- Pedone_win.exe        - Executable for 64 bit windows OS and CPU with SSE4.2 instructions.
- Pedone_win_nopopcnt   - Executable for 64 bit windows OS and CPU without SSE4.2 instructions.
- Pedone_win32.exe      - Executable for 32 bit windows OS 
- Pedone_android64      - Executable for 64 bit Android OS
- Pedone_android32      - Executable for 32 bit Android OS
- Pedone_linux_bmi2     - Executable for 64 bit linux OS and CPU with BMI2 instructions
- Pedone_linux          - Executable for 64 bit linux OS and CPU with SSE4.2 instructions.
- Pedone_linux_nopopcnt - Executable for 64 bit linux OS and CPU without SSE4.2 instructions.
- Pedone_linux32        - Executable for 32 bit linux OS 
- ReadMe.txt            - The file you are reading
- logo.bmp              - Pedone's logo


ENGINE SETTINGS

- Hash
  Select the size for the hash table.
  Pedone can accept values between 1MB and 1048576MB.

- Threads
  Choose the number of threads for a multithreaded search (between 1 and 128).

- Ponder
  Enable or disable pondering.

- OwnBook
  Enable or disable the own book.

- BookFile
  Choose the opening book file.

- BookRandom
  With this true the engine chooses every time a random move from the book, 
  otherwise chooses always the best one.

- DrawScore
  Choose the score in cp for the Draw (between -500 and +500)
  An high value makes the engine play for the draw.
  A low value makes the engine disdain the draw.

- Strength
  Set the strength level from 1 to 100.

- MultiPV
  Display multiple pvs (from 1 to 256).

- LargePages
  Enable or disable the allocation of the engine hash table with large pages.

- SyzygyPath
  The path of the syzygy files.

- Syzygy50MoveRule
  Enable or disable the fifty move rule for the tb probe.

- SyzygyProbeLimit
  Limit the egtb probe with this number of pieces left on the board.


WHAT'S NEW

Android 32 and 64 bit available
Improved passed pawns evaluation
Tuning
Added large pages allocation for the hash table
Improved time management
More aggressive late move pruning
Added countermove heuristic
Reduce bad captures
Improved history heuristic
Improved strength levels
Some speed optimizations

TECHNICAL DETAILS

- Board rappresentation QuadBitBoard
- Magic BitBoard
- Multithreaded search
- PV search
- Quiescence search with captures, promotions and checks
- Transposition Table
- Iterative deepening
- Internal iterative deepening
- Aspiration window
- Search extensions and reductions
- Late move pruning
- Futility and Null Move pruning
- Delta pruning
- SEE
- History
- Killer moves
- Countermove Heuristic
- Razoring
- Skill levels
- MultiPV
- Syzygy egtb support
- Polyglot book support


ACKNOWLEDGEMENTS

Thanks to:
- Ronald de Man for the syzygy probing code.
- G6 group for the technical support and for being a meeting point for
  the Italian computer chess programmers.
- chessprogramming for the knowledge that it shares.
- talkchess comunity for the suggestions and the help received.
- All the people that tested Pedone during these years.
