Small trivial cleanups

[stockfish] / README.md

diff --git a/README.md b/README.md
index f71a8b34722f5834f51ad0749ebfa5fa8a5ebc4d..2cc88bf4279582e28221de619cdd05cc6966ccad 100644 (file)
--- a/README.md
+++ b/README.md
@@ -4,17 +4,17 @@
 [![Build Status](https://ci.appveyor.com/api/projects/status/github/official-stockfish/Stockfish?branch=master&svg=true)](https://ci.appveyor.com/project/mcostalba/stockfish/branch/master)
 
 [Stockfish](https://stockfishchess.org) is a free, powerful UCI chess engine
 [![Build Status](https://ci.appveyor.com/api/projects/status/github/official-stockfish/Stockfish?branch=master&svg=true)](https://ci.appveyor.com/project/mcostalba/stockfish/branch/master)
 
 [Stockfish](https://stockfishchess.org) is a free, powerful UCI chess engine

-derived from Glaurung 2.1. It features two evaluation functions, the classical
-evaluation based on handcrafted terms, and the NNUE evaluation based on
-efficiently updateable neural networks. The classical evaluation runs efficiently
-on most 64bit CPU architectures, while the NNUE evaluation benefits strongly from the
-vector intrinsics available on modern CPUs (avx2 or similar).
+derived from Glaurung 2.1. Stockfish is not a complete chess program and requires a
+UCI-compatible graphical user interface (GUI) (e.g. XBoard with PolyGlot, Scid,
+Cute Chess, eboard, Arena, Sigma Chess, Shredder, Chess Partner or Fritz) in order
+to be used comfortably. Read the documentation for your GUI of choice for information
+about how to use Stockfish with it.

 
 

-Stockfish is not a complete chess program and requires a
-UCI-compatible GUI (e.g. XBoard with PolyGlot, Scid, Cute Chess, eboard, Arena,
-Sigma Chess, Shredder, Chess Partner or Fritz) in order to be used comfortably.
-Read the documentation for your GUI of choice for information about how to use
-Stockfish with it.
+The Stockfish engine features two evaluation functions for chess, the classical
+evaluation based on handcrafted terms, and the NNUE evaluation based on efficiently
+updateable neural networks. The classical evaluation runs efficiently on most 64bit
+CPU architectures, while the NNUE evaluation benefits strongly from the vector
+intrinsics available on modern CPUs (avx2 or similar).

 
 
 ## Files
 
 
 ## Files


@@ -28,10 +28,13 @@ This distribution of Stockfish consists of the following files:
   * src, a subdirectory containing the full source code, including a Makefile
     that can be used to compile Stockfish on Unix-like systems.
 
   * src, a subdirectory containing the full source code, including a Makefile
     that can be used to compile Stockfish on Unix-like systems.
 

-To use the NNUE evaluation an additional data file with neural network parameters
-needs to be downloaded. The filename for the default set can be found as the default
-value of the `EvalFile` UCI option, with the format
-`nn-[SHA256 first 12 digits].nnue` (e.g. nn-c157e0a5755b.nnue). This file can be downloaded from
+  * a file with the .nnue extension, storing the neural network for the NNUE 
+    evaluation.
+
+Note: to use the NNUE evaluation, the additional data file with neural network parameters
+needs to be downloaded. The filename for the default net can be found as the default
+value of the `EvalFile` UCI option, with the format `nn-[SHA256 first 12 digits].nnue`
+(for instance, `nn-c157e0a5755b.nnue`). This file can be downloaded from

 ```
 https://tests.stockfishchess.org/api/nn/[filename]
 ```
 ```
 https://tests.stockfishchess.org/api/nn/[filename]
 ```


@@ -58,20 +61,12 @@ Currently, Stockfish has the following UCI options:
 
   * #### Use NNUE
     Toggle between the NNUE and classical evaluation functions. If set to "true",
 
   * #### Use NNUE
     Toggle between the NNUE and classical evaluation functions. If set to "true",

-    the network parameters must be availabe to load from file (see also EvalFile).
+    the network parameters must be available to load from file (see also EvalFile).

 
   * #### EvalFile
     The name of the file of the NNUE evaluation parameters. Depending on the GUI the
     filename should include the full path to the folder/directory that contains the file.
 
 
   * #### EvalFile
     The name of the file of the NNUE evaluation parameters. Depending on the GUI the
     filename should include the full path to the folder/directory that contains the file.
 

-  * #### Contempt
-    A positive value for contempt favors middle game positions and avoids draws,
-    effective for the classical evaluation only.
-
-  * #### Analysis Contempt
-    By default, contempt is set to prefer the side to move. Set this option to "White"
-    or "Black" to analyse with contempt for that side, or "Off" to disable contempt.
-

   * #### UCI_AnalyseMode
     An option handled by your GUI.
 
   * #### UCI_AnalyseMode
     An option handled by your GUI.
 


@@ -120,6 +115,14 @@ Currently, Stockfish has the following UCI options:
     Limit Syzygy tablebase probing to positions with at most this many pieces left
     (including kings and pawns).
 
     Limit Syzygy tablebase probing to positions with at most this many pieces left
     (including kings and pawns).
 

+  * #### Contempt
+    A positive value for contempt favors middle game positions and avoids draws,
+    effective for the classical evaluation only.
+
+  * #### Analysis Contempt
+    By default, contempt is set to prefer the side to move. Set this option to "White"
+    or "Black" to analyse with contempt for that side, or "Off" to disable contempt.
+

   * #### Move Overhead
     Assume a time delay of x ms due to network and GUI overheads. This is useful to
     avoid losses on time in those cases.
   * #### Move Overhead
     Assume a time delay of x ms due to network and GUI overheads. This is useful to
     avoid losses on time in those cases.


@@ -138,7 +141,7 @@ Currently, Stockfish has the following UCI options:
   * #### Debug Log File
     Write all communication to and from the engine into a text file.
 
   * #### Debug Log File
     Write all communication to and from the engine into a text file.
 

-## classical and NNUE evaluation
+## A note on classical and NNUE evaluation

 
 Both approaches assign a value to a position that is used in alpha-beta (PVS) search
 to find the best move. The classical evaluation computes this value as a function
 
 Both approaches assign a value to a position that is used in alpha-beta (PVS) search
 to find the best move. The classical evaluation computes this value as a function


@@ -226,6 +229,7 @@ targets with corresponding descriptions.
     cd src
     make help
     make build ARCH=x86-64-modern
     cd src
     make help
     make build ARCH=x86-64-modern

+    make net

 ```
 
 When not using the Makefile to compile (for instance with Microsoft MSVC) you
 ```
 
 When not using the Makefile to compile (for instance with Microsoft MSVC) you


@@ -237,8 +241,7 @@ compiler you used to create your executable. These informations can
 be found by typing the following commands in a console:
 
 ```
 be found by typing the following commands in a console:
 
 ```

-    ./stockfish
-    compiler
+    ./stockfish compiler

 ```
 
 ## Understanding the code base and participating in the project
 ```
 
 ## Understanding the code base and participating in the project