Differences

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--- chess:programming:polyglot_book_format:key [2022/01/11 13:22] – created peter
+++ chess:programming:polyglot_book_format:key [2022/01/11 14:03] (current) – peter
@@ Line 1: / Line 1: @@
 ====== Chess - Programming - Polyglot Book Format - Key ======
-The **Key** is a 64-bit Zorbrist hash of a board position.
+The **Key** is a 64-bit Zorbrist hash of a board position, together with some additional information:
 <code>
@@ Line 11: / Line 11: @@
   * [[Chess:Programming:Polyglot Book Format:Piece|Piece]]
-  * Castle
+  * [[Chess:Programming:Polyglot Book Format:Castle|Castle]]
-  * Enpassant
+  * [[Chess:Programming:Polyglot Book Format:Enpassant|Enpassant]]
-  * Turn
+  * [[Chess:Programming:Polyglot Book Format:Turn|Turn]]
 </WRAP>
@@ Line 97: / Line 97: @@
 ----
+==== RANDOM_POLYGOT ====
+This is the master array.
 <code cpp>
@@ Line 302: / Line 306: @@
 ----
-The array RANDOM_POLYGOT is in fact a concatenation of four sub-arrays:
+The array **RANDOM_POLYGOT** is in fact a concatenation of four sub-arrays:
 <code cpp>
@@ Line 310: / Line 314: @@
 RANDOM_TURN      (offset: 780, length:   1)
 </code>
+----
+==== RANDOM_PIECE ====
 <code cpp>
@@ Line 507: / Line 515: @@
    uint64_t(0x5FA7867CAF35E149), uint64_t(0x56986E2EF3ED091B), uint64_t(0x917F1DD5F8886C61), uint64_t(0xD20D8C88C8FFE65F)
 };
+</code>
+==== RANDOM_CASTLE ====
+<code cpp>
 constexpr uint64_t RANDOM_CASTLE[4] =
 {
   uint64_t(0x31D71DCE64B2C310), uint64_t(0xF165B587DF898190), uint64_t(0xA57E6339DD2CF3A0), uint64_t(0x1EF6E6DBB1961EC9)
 };
+</code>
+----
+==== RANDOM_ENPASSANT ====
+<code cpp>
 constexpr uint64_t RANDOM_ENPASSANT[8] =
 {
@@ Line 520: / Line 536: @@
   uint64_t(0xCF3145DE0ADD4289), uint64_t(0xD0E4427A5514FB72), uint64_t(0x77C621CC9FB3A483), uint64_t(0x67A34DAC4356550B)
 };
+</code>
+----
+==== RANDOM_TURN ====
+<code cpp>
 constexpr uint64_t RANDOM_TURN = uint64_t(0xF8D626AAAF278509);
 </code>