Differences

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--- chess:programming:polyglot_book_format:weight [2022/01/10 15:52] – created peter
+++ chess:programming:polyglot_book_format:weight [2022/01/11 14:13] (current) – [Zero Weights] peter
@@ Line 1: / Line 1: @@
 ====== Chess - Programming - Polyglot Book Format - Weight ======
-**weight** is a measure for the quality of the move.
+**Weight** is a measure for the quality of the move.
-  * This is sometimes referred to as **count**.
+  * The probability that a move is selected is its weight divided by the sum of the weights of all the moves in the given position.
+<WRAP info>
+**NOTE:** This is sometimes referred to as **count**.
 The Polyglot book generator sets it to 2*(wins)+(draws), globally scaled to fit into 16 bits.
-    * A move with a weight of zero is deleted from the book.
+  * A move with a weight of zero is usually deleted from the book.
-    * This is just a convention and book authors are free to set this field according to their taste.
+  * This is just a convention and book authors are free to set this field according to their taste.
-If random play is enabled in Polyglot then the probability that a move is selected is its weight divided by the sum of the weights of all the moves in the given position.
+</WRAP>
 ----
@@ Line 16: / Line 19: @@
 ===== Zero Weights =====
-Older Polyglot versions are defective as to the use of zero weights, (meaning the move should never be played), and crash when they encounter them.
+<WRAP important>
+**WARNING:**  Older Polyglot versions are defective as to the use of zero weights, (meaning the move should never be played), and crash when they encounter them.
 This because of a misplaced internal consistency check, which really only made sense during book building (which deletes all entries with zero weight from the book).
@@ Line 26: / Line 30: @@
   * This is for instance what Scid does, but it means the move will still occasionally be played.
   * With XBoard you can edit Polyglot books to set the weight to exactly zero, as well as delete or add moves.
+</WRAP>
-[[Chess:Programming:Polyglot Book Format:Weight|Weight]]