2 * book.c -- code for probing Polyglot opening books
4 * This code was first released in the public domain by Michel Van den Bergh.
5 * The array Random64 is taken from the Polyglot source code.
6 * I am pretty sure that a table of random numbers is never protected
9 * It s adapted by H.G. Muller for working with xboard / Winboard
11 * The following terms apply to the enhanced version of XBoard distributed
12 * by the Free Software Foundation:
13 * ------------------------------------------------------------------------
15 * GNU XBoard is free software: you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation, either version 3 of the License, or (at
18 * your option) any later version.
20 * GNU XBoard is distributed in the hope that it will be useful, but
21 * WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 * General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program. If not, see http://www.gnu.org/licenses/. *
28 * ------------------------------------------------------------------------
42 typedef unsigned __int64 uint64;
44 typedef unsigned long long int uint64;
49 # define U64(u) (u##ui64)
51 # define U64(u) (u##ULL)
54 typedef unsigned char uint8;
55 typedef unsigned short uint16;
56 typedef unsigned int uint32;
66 entry_t entry_none = {
70 char *promote_pieces=" nbrqac=";
72 uint64 Random64[781] = {
73 U64(0x9D39247E33776D41), U64(0x2AF7398005AAA5C7), U64(0x44DB015024623547), U64(0x9C15F73E62A76AE2),
74 U64(0x75834465489C0C89), U64(0x3290AC3A203001BF), U64(0x0FBBAD1F61042279), U64(0xE83A908FF2FB60CA),
75 U64(0x0D7E765D58755C10), U64(0x1A083822CEAFE02D), U64(0x9605D5F0E25EC3B0), U64(0xD021FF5CD13A2ED5),
76 U64(0x40BDF15D4A672E32), U64(0x011355146FD56395), U64(0x5DB4832046F3D9E5), U64(0x239F8B2D7FF719CC),
77 U64(0x05D1A1AE85B49AA1), U64(0x679F848F6E8FC971), U64(0x7449BBFF801FED0B), U64(0x7D11CDB1C3B7ADF0),
78 U64(0x82C7709E781EB7CC), U64(0xF3218F1C9510786C), U64(0x331478F3AF51BBE6), U64(0x4BB38DE5E7219443),
79 U64(0xAA649C6EBCFD50FC), U64(0x8DBD98A352AFD40B), U64(0x87D2074B81D79217), U64(0x19F3C751D3E92AE1),
80 U64(0xB4AB30F062B19ABF), U64(0x7B0500AC42047AC4), U64(0xC9452CA81A09D85D), U64(0x24AA6C514DA27500),
81 U64(0x4C9F34427501B447), U64(0x14A68FD73C910841), U64(0xA71B9B83461CBD93), U64(0x03488B95B0F1850F),
82 U64(0x637B2B34FF93C040), U64(0x09D1BC9A3DD90A94), U64(0x3575668334A1DD3B), U64(0x735E2B97A4C45A23),
83 U64(0x18727070F1BD400B), U64(0x1FCBACD259BF02E7), U64(0xD310A7C2CE9B6555), U64(0xBF983FE0FE5D8244),
84 U64(0x9F74D14F7454A824), U64(0x51EBDC4AB9BA3035), U64(0x5C82C505DB9AB0FA), U64(0xFCF7FE8A3430B241),
85 U64(0x3253A729B9BA3DDE), U64(0x8C74C368081B3075), U64(0xB9BC6C87167C33E7), U64(0x7EF48F2B83024E20),
86 U64(0x11D505D4C351BD7F), U64(0x6568FCA92C76A243), U64(0x4DE0B0F40F32A7B8), U64(0x96D693460CC37E5D),
87 U64(0x42E240CB63689F2F), U64(0x6D2BDCDAE2919661), U64(0x42880B0236E4D951), U64(0x5F0F4A5898171BB6),
88 U64(0x39F890F579F92F88), U64(0x93C5B5F47356388B), U64(0x63DC359D8D231B78), U64(0xEC16CA8AEA98AD76),
89 U64(0x5355F900C2A82DC7), U64(0x07FB9F855A997142), U64(0x5093417AA8A7ED5E), U64(0x7BCBC38DA25A7F3C),
90 U64(0x19FC8A768CF4B6D4), U64(0x637A7780DECFC0D9), U64(0x8249A47AEE0E41F7), U64(0x79AD695501E7D1E8),
91 U64(0x14ACBAF4777D5776), U64(0xF145B6BECCDEA195), U64(0xDABF2AC8201752FC), U64(0x24C3C94DF9C8D3F6),
92 U64(0xBB6E2924F03912EA), U64(0x0CE26C0B95C980D9), U64(0xA49CD132BFBF7CC4), U64(0xE99D662AF4243939),
93 U64(0x27E6AD7891165C3F), U64(0x8535F040B9744FF1), U64(0x54B3F4FA5F40D873), U64(0x72B12C32127FED2B),
94 U64(0xEE954D3C7B411F47), U64(0x9A85AC909A24EAA1), U64(0x70AC4CD9F04F21F5), U64(0xF9B89D3E99A075C2),
95 U64(0x87B3E2B2B5C907B1), U64(0xA366E5B8C54F48B8), U64(0xAE4A9346CC3F7CF2), U64(0x1920C04D47267BBD),
96 U64(0x87BF02C6B49E2AE9), U64(0x092237AC237F3859), U64(0xFF07F64EF8ED14D0), U64(0x8DE8DCA9F03CC54E),
97 U64(0x9C1633264DB49C89), U64(0xB3F22C3D0B0B38ED), U64(0x390E5FB44D01144B), U64(0x5BFEA5B4712768E9),
98 U64(0x1E1032911FA78984), U64(0x9A74ACB964E78CB3), U64(0x4F80F7A035DAFB04), U64(0x6304D09A0B3738C4),
99 U64(0x2171E64683023A08), U64(0x5B9B63EB9CEFF80C), U64(0x506AACF489889342), U64(0x1881AFC9A3A701D6),
100 U64(0x6503080440750644), U64(0xDFD395339CDBF4A7), U64(0xEF927DBCF00C20F2), U64(0x7B32F7D1E03680EC),
101 U64(0xB9FD7620E7316243), U64(0x05A7E8A57DB91B77), U64(0xB5889C6E15630A75), U64(0x4A750A09CE9573F7),
102 U64(0xCF464CEC899A2F8A), U64(0xF538639CE705B824), U64(0x3C79A0FF5580EF7F), U64(0xEDE6C87F8477609D),
103 U64(0x799E81F05BC93F31), U64(0x86536B8CF3428A8C), U64(0x97D7374C60087B73), U64(0xA246637CFF328532),
104 U64(0x043FCAE60CC0EBA0), U64(0x920E449535DD359E), U64(0x70EB093B15B290CC), U64(0x73A1921916591CBD),
105 U64(0x56436C9FE1A1AA8D), U64(0xEFAC4B70633B8F81), U64(0xBB215798D45DF7AF), U64(0x45F20042F24F1768),
106 U64(0x930F80F4E8EB7462), U64(0xFF6712FFCFD75EA1), U64(0xAE623FD67468AA70), U64(0xDD2C5BC84BC8D8FC),
107 U64(0x7EED120D54CF2DD9), U64(0x22FE545401165F1C), U64(0xC91800E98FB99929), U64(0x808BD68E6AC10365),
108 U64(0xDEC468145B7605F6), U64(0x1BEDE3A3AEF53302), U64(0x43539603D6C55602), U64(0xAA969B5C691CCB7A),
109 U64(0xA87832D392EFEE56), U64(0x65942C7B3C7E11AE), U64(0xDED2D633CAD004F6), U64(0x21F08570F420E565),
110 U64(0xB415938D7DA94E3C), U64(0x91B859E59ECB6350), U64(0x10CFF333E0ED804A), U64(0x28AED140BE0BB7DD),
111 U64(0xC5CC1D89724FA456), U64(0x5648F680F11A2741), U64(0x2D255069F0B7DAB3), U64(0x9BC5A38EF729ABD4),
112 U64(0xEF2F054308F6A2BC), U64(0xAF2042F5CC5C2858), U64(0x480412BAB7F5BE2A), U64(0xAEF3AF4A563DFE43),
113 U64(0x19AFE59AE451497F), U64(0x52593803DFF1E840), U64(0xF4F076E65F2CE6F0), U64(0x11379625747D5AF3),
114 U64(0xBCE5D2248682C115), U64(0x9DA4243DE836994F), U64(0x066F70B33FE09017), U64(0x4DC4DE189B671A1C),
115 U64(0x51039AB7712457C3), U64(0xC07A3F80C31FB4B4), U64(0xB46EE9C5E64A6E7C), U64(0xB3819A42ABE61C87),
116 U64(0x21A007933A522A20), U64(0x2DF16F761598AA4F), U64(0x763C4A1371B368FD), U64(0xF793C46702E086A0),
117 U64(0xD7288E012AEB8D31), U64(0xDE336A2A4BC1C44B), U64(0x0BF692B38D079F23), U64(0x2C604A7A177326B3),
118 U64(0x4850E73E03EB6064), U64(0xCFC447F1E53C8E1B), U64(0xB05CA3F564268D99), U64(0x9AE182C8BC9474E8),
119 U64(0xA4FC4BD4FC5558CA), U64(0xE755178D58FC4E76), U64(0x69B97DB1A4C03DFE), U64(0xF9B5B7C4ACC67C96),
120 U64(0xFC6A82D64B8655FB), U64(0x9C684CB6C4D24417), U64(0x8EC97D2917456ED0), U64(0x6703DF9D2924E97E),
121 U64(0xC547F57E42A7444E), U64(0x78E37644E7CAD29E), U64(0xFE9A44E9362F05FA), U64(0x08BD35CC38336615),
122 U64(0x9315E5EB3A129ACE), U64(0x94061B871E04DF75), U64(0xDF1D9F9D784BA010), U64(0x3BBA57B68871B59D),
123 U64(0xD2B7ADEEDED1F73F), U64(0xF7A255D83BC373F8), U64(0xD7F4F2448C0CEB81), U64(0xD95BE88CD210FFA7),
124 U64(0x336F52F8FF4728E7), U64(0xA74049DAC312AC71), U64(0xA2F61BB6E437FDB5), U64(0x4F2A5CB07F6A35B3),
125 U64(0x87D380BDA5BF7859), U64(0x16B9F7E06C453A21), U64(0x7BA2484C8A0FD54E), U64(0xF3A678CAD9A2E38C),
126 U64(0x39B0BF7DDE437BA2), U64(0xFCAF55C1BF8A4424), U64(0x18FCF680573FA594), U64(0x4C0563B89F495AC3),
127 U64(0x40E087931A00930D), U64(0x8CFFA9412EB642C1), U64(0x68CA39053261169F), U64(0x7A1EE967D27579E2),
128 U64(0x9D1D60E5076F5B6F), U64(0x3810E399B6F65BA2), U64(0x32095B6D4AB5F9B1), U64(0x35CAB62109DD038A),
129 U64(0xA90B24499FCFAFB1), U64(0x77A225A07CC2C6BD), U64(0x513E5E634C70E331), U64(0x4361C0CA3F692F12),
130 U64(0xD941ACA44B20A45B), U64(0x528F7C8602C5807B), U64(0x52AB92BEB9613989), U64(0x9D1DFA2EFC557F73),
131 U64(0x722FF175F572C348), U64(0x1D1260A51107FE97), U64(0x7A249A57EC0C9BA2), U64(0x04208FE9E8F7F2D6),
132 U64(0x5A110C6058B920A0), U64(0x0CD9A497658A5698), U64(0x56FD23C8F9715A4C), U64(0x284C847B9D887AAE),
133 U64(0x04FEABFBBDB619CB), U64(0x742E1E651C60BA83), U64(0x9A9632E65904AD3C), U64(0x881B82A13B51B9E2),
134 U64(0x506E6744CD974924), U64(0xB0183DB56FFC6A79), U64(0x0ED9B915C66ED37E), U64(0x5E11E86D5873D484),
135 U64(0xF678647E3519AC6E), U64(0x1B85D488D0F20CC5), U64(0xDAB9FE6525D89021), U64(0x0D151D86ADB73615),
136 U64(0xA865A54EDCC0F019), U64(0x93C42566AEF98FFB), U64(0x99E7AFEABE000731), U64(0x48CBFF086DDF285A),
137 U64(0x7F9B6AF1EBF78BAF), U64(0x58627E1A149BBA21), U64(0x2CD16E2ABD791E33), U64(0xD363EFF5F0977996),
138 U64(0x0CE2A38C344A6EED), U64(0x1A804AADB9CFA741), U64(0x907F30421D78C5DE), U64(0x501F65EDB3034D07),
139 U64(0x37624AE5A48FA6E9), U64(0x957BAF61700CFF4E), U64(0x3A6C27934E31188A), U64(0xD49503536ABCA345),
140 U64(0x088E049589C432E0), U64(0xF943AEE7FEBF21B8), U64(0x6C3B8E3E336139D3), U64(0x364F6FFA464EE52E),
141 U64(0xD60F6DCEDC314222), U64(0x56963B0DCA418FC0), U64(0x16F50EDF91E513AF), U64(0xEF1955914B609F93),
142 U64(0x565601C0364E3228), U64(0xECB53939887E8175), U64(0xBAC7A9A18531294B), U64(0xB344C470397BBA52),
143 U64(0x65D34954DAF3CEBD), U64(0xB4B81B3FA97511E2), U64(0xB422061193D6F6A7), U64(0x071582401C38434D),
144 U64(0x7A13F18BBEDC4FF5), U64(0xBC4097B116C524D2), U64(0x59B97885E2F2EA28), U64(0x99170A5DC3115544),
145 U64(0x6F423357E7C6A9F9), U64(0x325928EE6E6F8794), U64(0xD0E4366228B03343), U64(0x565C31F7DE89EA27),
146 U64(0x30F5611484119414), U64(0xD873DB391292ED4F), U64(0x7BD94E1D8E17DEBC), U64(0xC7D9F16864A76E94),
147 U64(0x947AE053EE56E63C), U64(0xC8C93882F9475F5F), U64(0x3A9BF55BA91F81CA), U64(0xD9A11FBB3D9808E4),
148 U64(0x0FD22063EDC29FCA), U64(0xB3F256D8ACA0B0B9), U64(0xB03031A8B4516E84), U64(0x35DD37D5871448AF),
149 U64(0xE9F6082B05542E4E), U64(0xEBFAFA33D7254B59), U64(0x9255ABB50D532280), U64(0xB9AB4CE57F2D34F3),
150 U64(0x693501D628297551), U64(0xC62C58F97DD949BF), U64(0xCD454F8F19C5126A), U64(0xBBE83F4ECC2BDECB),
151 U64(0xDC842B7E2819E230), U64(0xBA89142E007503B8), U64(0xA3BC941D0A5061CB), U64(0xE9F6760E32CD8021),
152 U64(0x09C7E552BC76492F), U64(0x852F54934DA55CC9), U64(0x8107FCCF064FCF56), U64(0x098954D51FFF6580),
153 U64(0x23B70EDB1955C4BF), U64(0xC330DE426430F69D), U64(0x4715ED43E8A45C0A), U64(0xA8D7E4DAB780A08D),
154 U64(0x0572B974F03CE0BB), U64(0xB57D2E985E1419C7), U64(0xE8D9ECBE2CF3D73F), U64(0x2FE4B17170E59750),
155 U64(0x11317BA87905E790), U64(0x7FBF21EC8A1F45EC), U64(0x1725CABFCB045B00), U64(0x964E915CD5E2B207),
156 U64(0x3E2B8BCBF016D66D), U64(0xBE7444E39328A0AC), U64(0xF85B2B4FBCDE44B7), U64(0x49353FEA39BA63B1),
157 U64(0x1DD01AAFCD53486A), U64(0x1FCA8A92FD719F85), U64(0xFC7C95D827357AFA), U64(0x18A6A990C8B35EBD),
158 U64(0xCCCB7005C6B9C28D), U64(0x3BDBB92C43B17F26), U64(0xAA70B5B4F89695A2), U64(0xE94C39A54A98307F),
159 U64(0xB7A0B174CFF6F36E), U64(0xD4DBA84729AF48AD), U64(0x2E18BC1AD9704A68), U64(0x2DE0966DAF2F8B1C),
160 U64(0xB9C11D5B1E43A07E), U64(0x64972D68DEE33360), U64(0x94628D38D0C20584), U64(0xDBC0D2B6AB90A559),
161 U64(0xD2733C4335C6A72F), U64(0x7E75D99D94A70F4D), U64(0x6CED1983376FA72B), U64(0x97FCAACBF030BC24),
162 U64(0x7B77497B32503B12), U64(0x8547EDDFB81CCB94), U64(0x79999CDFF70902CB), U64(0xCFFE1939438E9B24),
163 U64(0x829626E3892D95D7), U64(0x92FAE24291F2B3F1), U64(0x63E22C147B9C3403), U64(0xC678B6D860284A1C),
164 U64(0x5873888850659AE7), U64(0x0981DCD296A8736D), U64(0x9F65789A6509A440), U64(0x9FF38FED72E9052F),
165 U64(0xE479EE5B9930578C), U64(0xE7F28ECD2D49EECD), U64(0x56C074A581EA17FE), U64(0x5544F7D774B14AEF),
166 U64(0x7B3F0195FC6F290F), U64(0x12153635B2C0CF57), U64(0x7F5126DBBA5E0CA7), U64(0x7A76956C3EAFB413),
167 U64(0x3D5774A11D31AB39), U64(0x8A1B083821F40CB4), U64(0x7B4A38E32537DF62), U64(0x950113646D1D6E03),
168 U64(0x4DA8979A0041E8A9), U64(0x3BC36E078F7515D7), U64(0x5D0A12F27AD310D1), U64(0x7F9D1A2E1EBE1327),
169 U64(0xDA3A361B1C5157B1), U64(0xDCDD7D20903D0C25), U64(0x36833336D068F707), U64(0xCE68341F79893389),
170 U64(0xAB9090168DD05F34), U64(0x43954B3252DC25E5), U64(0xB438C2B67F98E5E9), U64(0x10DCD78E3851A492),
171 U64(0xDBC27AB5447822BF), U64(0x9B3CDB65F82CA382), U64(0xB67B7896167B4C84), U64(0xBFCED1B0048EAC50),
172 U64(0xA9119B60369FFEBD), U64(0x1FFF7AC80904BF45), U64(0xAC12FB171817EEE7), U64(0xAF08DA9177DDA93D),
173 U64(0x1B0CAB936E65C744), U64(0xB559EB1D04E5E932), U64(0xC37B45B3F8D6F2BA), U64(0xC3A9DC228CAAC9E9),
174 U64(0xF3B8B6675A6507FF), U64(0x9FC477DE4ED681DA), U64(0x67378D8ECCEF96CB), U64(0x6DD856D94D259236),
175 U64(0xA319CE15B0B4DB31), U64(0x073973751F12DD5E), U64(0x8A8E849EB32781A5), U64(0xE1925C71285279F5),
176 U64(0x74C04BF1790C0EFE), U64(0x4DDA48153C94938A), U64(0x9D266D6A1CC0542C), U64(0x7440FB816508C4FE),
177 U64(0x13328503DF48229F), U64(0xD6BF7BAEE43CAC40), U64(0x4838D65F6EF6748F), U64(0x1E152328F3318DEA),
178 U64(0x8F8419A348F296BF), U64(0x72C8834A5957B511), U64(0xD7A023A73260B45C), U64(0x94EBC8ABCFB56DAE),
179 U64(0x9FC10D0F989993E0), U64(0xDE68A2355B93CAE6), U64(0xA44CFE79AE538BBE), U64(0x9D1D84FCCE371425),
180 U64(0x51D2B1AB2DDFB636), U64(0x2FD7E4B9E72CD38C), U64(0x65CA5B96B7552210), U64(0xDD69A0D8AB3B546D),
181 U64(0x604D51B25FBF70E2), U64(0x73AA8A564FB7AC9E), U64(0x1A8C1E992B941148), U64(0xAAC40A2703D9BEA0),
182 U64(0x764DBEAE7FA4F3A6), U64(0x1E99B96E70A9BE8B), U64(0x2C5E9DEB57EF4743), U64(0x3A938FEE32D29981),
183 U64(0x26E6DB8FFDF5ADFE), U64(0x469356C504EC9F9D), U64(0xC8763C5B08D1908C), U64(0x3F6C6AF859D80055),
184 U64(0x7F7CC39420A3A545), U64(0x9BFB227EBDF4C5CE), U64(0x89039D79D6FC5C5C), U64(0x8FE88B57305E2AB6),
185 U64(0xA09E8C8C35AB96DE), U64(0xFA7E393983325753), U64(0xD6B6D0ECC617C699), U64(0xDFEA21EA9E7557E3),
186 U64(0xB67C1FA481680AF8), U64(0xCA1E3785A9E724E5), U64(0x1CFC8BED0D681639), U64(0xD18D8549D140CAEA),
187 U64(0x4ED0FE7E9DC91335), U64(0xE4DBF0634473F5D2), U64(0x1761F93A44D5AEFE), U64(0x53898E4C3910DA55),
188 U64(0x734DE8181F6EC39A), U64(0x2680B122BAA28D97), U64(0x298AF231C85BAFAB), U64(0x7983EED3740847D5),
189 U64(0x66C1A2A1A60CD889), U64(0x9E17E49642A3E4C1), U64(0xEDB454E7BADC0805), U64(0x50B704CAB602C329),
190 U64(0x4CC317FB9CDDD023), U64(0x66B4835D9EAFEA22), U64(0x219B97E26FFC81BD), U64(0x261E4E4C0A333A9D),
191 U64(0x1FE2CCA76517DB90), U64(0xD7504DFA8816EDBB), U64(0xB9571FA04DC089C8), U64(0x1DDC0325259B27DE),
192 U64(0xCF3F4688801EB9AA), U64(0xF4F5D05C10CAB243), U64(0x38B6525C21A42B0E), U64(0x36F60E2BA4FA6800),
193 U64(0xEB3593803173E0CE), U64(0x9C4CD6257C5A3603), U64(0xAF0C317D32ADAA8A), U64(0x258E5A80C7204C4B),
194 U64(0x8B889D624D44885D), U64(0xF4D14597E660F855), U64(0xD4347F66EC8941C3), U64(0xE699ED85B0DFB40D),
195 U64(0x2472F6207C2D0484), U64(0xC2A1E7B5B459AEB5), U64(0xAB4F6451CC1D45EC), U64(0x63767572AE3D6174),
196 U64(0xA59E0BD101731A28), U64(0x116D0016CB948F09), U64(0x2CF9C8CA052F6E9F), U64(0x0B090A7560A968E3),
197 U64(0xABEEDDB2DDE06FF1), U64(0x58EFC10B06A2068D), U64(0xC6E57A78FBD986E0), U64(0x2EAB8CA63CE802D7),
198 U64(0x14A195640116F336), U64(0x7C0828DD624EC390), U64(0xD74BBE77E6116AC7), U64(0x804456AF10F5FB53),
199 U64(0xEBE9EA2ADF4321C7), U64(0x03219A39EE587A30), U64(0x49787FEF17AF9924), U64(0xA1E9300CD8520548),
200 U64(0x5B45E522E4B1B4EF), U64(0xB49C3B3995091A36), U64(0xD4490AD526F14431), U64(0x12A8F216AF9418C2),
201 U64(0x001F837CC7350524), U64(0x1877B51E57A764D5), U64(0xA2853B80F17F58EE), U64(0x993E1DE72D36D310),
202 U64(0xB3598080CE64A656), U64(0x252F59CF0D9F04BB), U64(0xD23C8E176D113600), U64(0x1BDA0492E7E4586E),
203 U64(0x21E0BD5026C619BF), U64(0x3B097ADAF088F94E), U64(0x8D14DEDB30BE846E), U64(0xF95CFFA23AF5F6F4),
204 U64(0x3871700761B3F743), U64(0xCA672B91E9E4FA16), U64(0x64C8E531BFF53B55), U64(0x241260ED4AD1E87D),
205 U64(0x106C09B972D2E822), U64(0x7FBA195410E5CA30), U64(0x7884D9BC6CB569D8), U64(0x0647DFEDCD894A29),
206 U64(0x63573FF03E224774), U64(0x4FC8E9560F91B123), U64(0x1DB956E450275779), U64(0xB8D91274B9E9D4FB),
207 U64(0xA2EBEE47E2FBFCE1), U64(0xD9F1F30CCD97FB09), U64(0xEFED53D75FD64E6B), U64(0x2E6D02C36017F67F),
208 U64(0xA9AA4D20DB084E9B), U64(0xB64BE8D8B25396C1), U64(0x70CB6AF7C2D5BCF0), U64(0x98F076A4F7A2322E),
209 U64(0xBF84470805E69B5F), U64(0x94C3251F06F90CF3), U64(0x3E003E616A6591E9), U64(0xB925A6CD0421AFF3),
210 U64(0x61BDD1307C66E300), U64(0xBF8D5108E27E0D48), U64(0x240AB57A8B888B20), U64(0xFC87614BAF287E07),
211 U64(0xEF02CDD06FFDB432), U64(0xA1082C0466DF6C0A), U64(0x8215E577001332C8), U64(0xD39BB9C3A48DB6CF),
212 U64(0x2738259634305C14), U64(0x61CF4F94C97DF93D), U64(0x1B6BACA2AE4E125B), U64(0x758F450C88572E0B),
213 U64(0x959F587D507A8359), U64(0xB063E962E045F54D), U64(0x60E8ED72C0DFF5D1), U64(0x7B64978555326F9F),
214 U64(0xFD080D236DA814BA), U64(0x8C90FD9B083F4558), U64(0x106F72FE81E2C590), U64(0x7976033A39F7D952),
215 U64(0xA4EC0132764CA04B), U64(0x733EA705FAE4FA77), U64(0xB4D8F77BC3E56167), U64(0x9E21F4F903B33FD9),
216 U64(0x9D765E419FB69F6D), U64(0xD30C088BA61EA5EF), U64(0x5D94337FBFAF7F5B), U64(0x1A4E4822EB4D7A59),
217 U64(0x6FFE73E81B637FB3), U64(0xDDF957BC36D8B9CA), U64(0x64D0E29EEA8838B3), U64(0x08DD9BDFD96B9F63),
218 U64(0x087E79E5A57D1D13), U64(0xE328E230E3E2B3FB), U64(0x1C2559E30F0946BE), U64(0x720BF5F26F4D2EAA),
219 U64(0xB0774D261CC609DB), U64(0x443F64EC5A371195), U64(0x4112CF68649A260E), U64(0xD813F2FAB7F5C5CA),
220 U64(0x660D3257380841EE), U64(0x59AC2C7873F910A3), U64(0xE846963877671A17), U64(0x93B633ABFA3469F8),
221 U64(0xC0C0F5A60EF4CDCF), U64(0xCAF21ECD4377B28C), U64(0x57277707199B8175), U64(0x506C11B9D90E8B1D),
222 U64(0xD83CC2687A19255F), U64(0x4A29C6465A314CD1), U64(0xED2DF21216235097), U64(0xB5635C95FF7296E2),
223 U64(0x22AF003AB672E811), U64(0x52E762596BF68235), U64(0x9AEBA33AC6ECC6B0), U64(0x944F6DE09134DFB6),
224 U64(0x6C47BEC883A7DE39), U64(0x6AD047C430A12104), U64(0xA5B1CFDBA0AB4067), U64(0x7C45D833AFF07862),
225 U64(0x5092EF950A16DA0B), U64(0x9338E69C052B8E7B), U64(0x455A4B4CFE30E3F5), U64(0x6B02E63195AD0CF8),
226 U64(0x6B17B224BAD6BF27), U64(0xD1E0CCD25BB9C169), U64(0xDE0C89A556B9AE70), U64(0x50065E535A213CF6),
227 U64(0x9C1169FA2777B874), U64(0x78EDEFD694AF1EED), U64(0x6DC93D9526A50E68), U64(0xEE97F453F06791ED),
228 U64(0x32AB0EDB696703D3), U64(0x3A6853C7E70757A7), U64(0x31865CED6120F37D), U64(0x67FEF95D92607890),
229 U64(0x1F2B1D1F15F6DC9C), U64(0xB69E38A8965C6B65), U64(0xAA9119FF184CCCF4), U64(0xF43C732873F24C13),
230 U64(0xFB4A3D794A9A80D2), U64(0x3550C2321FD6109C), U64(0x371F77E76BB8417E), U64(0x6BFA9AAE5EC05779),
231 U64(0xCD04F3FF001A4778), U64(0xE3273522064480CA), U64(0x9F91508BFFCFC14A), U64(0x049A7F41061A9E60),
232 U64(0xFCB6BE43A9F2FE9B), U64(0x08DE8A1C7797DA9B), U64(0x8F9887E6078735A1), U64(0xB5B4071DBFC73A66),
233 U64(0x230E343DFBA08D33), U64(0x43ED7F5A0FAE657D), U64(0x3A88A0FBBCB05C63), U64(0x21874B8B4D2DBC4F),
234 U64(0x1BDEA12E35F6A8C9), U64(0x53C065C6C8E63528), U64(0xE34A1D250E7A8D6B), U64(0xD6B04D3B7651DD7E),
235 U64(0x5E90277E7CB39E2D), U64(0x2C046F22062DC67D), U64(0xB10BB459132D0A26), U64(0x3FA9DDFB67E2F199),
236 U64(0x0E09B88E1914F7AF), U64(0x10E8B35AF3EEAB37), U64(0x9EEDECA8E272B933), U64(0xD4C718BC4AE8AE5F),
237 U64(0x81536D601170FC20), U64(0x91B534F885818A06), U64(0xEC8177F83F900978), U64(0x190E714FADA5156E),
238 U64(0xB592BF39B0364963), U64(0x89C350C893AE7DC1), U64(0xAC042E70F8B383F2), U64(0xB49B52E587A1EE60),
239 U64(0xFB152FE3FF26DA89), U64(0x3E666E6F69AE2C15), U64(0x3B544EBE544C19F9), U64(0xE805A1E290CF2456),
240 U64(0x24B33C9D7ED25117), U64(0xE74733427B72F0C1), U64(0x0A804D18B7097475), U64(0x57E3306D881EDB4F),
241 U64(0x4AE7D6A36EB5DBCB), U64(0x2D8D5432157064C8), U64(0xD1E649DE1E7F268B), U64(0x8A328A1CEDFE552C),
242 U64(0x07A3AEC79624C7DA), U64(0x84547DDC3E203C94), U64(0x990A98FD5071D263), U64(0x1A4FF12616EEFC89),
243 U64(0xF6F7FD1431714200), U64(0x30C05B1BA332F41C), U64(0x8D2636B81555A786), U64(0x46C9FEB55D120902),
244 U64(0xCCEC0A73B49C9921), U64(0x4E9D2827355FC492), U64(0x19EBB029435DCB0F), U64(0x4659D2B743848A2C),
245 U64(0x963EF2C96B33BE31), U64(0x74F85198B05A2E7D), U64(0x5A0F544DD2B1FB18), U64(0x03727073C2E134B1),
246 U64(0xC7F6AA2DE59AEA61), U64(0x352787BAA0D7C22F), U64(0x9853EAB63B5E0B35), U64(0xABBDCDD7ED5C0860),
247 U64(0xCF05DAF5AC8D77B0), U64(0x49CAD48CEBF4A71E), U64(0x7A4C10EC2158C4A6), U64(0xD9E92AA246BF719E),
248 U64(0x13AE978D09FE5557), U64(0x730499AF921549FF), U64(0x4E4B705B92903BA4), U64(0xFF577222C14F0A3A),
249 U64(0x55B6344CF97AAFAE), U64(0xB862225B055B6960), U64(0xCAC09AFBDDD2CDB4), U64(0xDAF8E9829FE96B5F),
250 U64(0xB5FDFC5D3132C498), U64(0x310CB380DB6F7503), U64(0xE87FBB46217A360E), U64(0x2102AE466EBB1148),
251 U64(0xF8549E1A3AA5E00D), U64(0x07A69AFDCC42261A), U64(0xC4C118BFE78FEAAE), U64(0xF9F4892ED96BD438),
252 U64(0x1AF3DBE25D8F45DA), U64(0xF5B4B0B0D2DEEEB4), U64(0x962ACEEFA82E1C84), U64(0x046E3ECAAF453CE9),
253 U64(0xF05D129681949A4C), U64(0x964781CE734B3C84), U64(0x9C2ED44081CE5FBD), U64(0x522E23F3925E319E),
254 U64(0x177E00F9FC32F791), U64(0x2BC60A63A6F3B3F2), U64(0x222BBFAE61725606), U64(0x486289DDCC3D6780),
255 U64(0x7DC7785B8EFDFC80), U64(0x8AF38731C02BA980), U64(0x1FAB64EA29A2DDF7), U64(0xE4D9429322CD065A),
256 U64(0x9DA058C67844F20C), U64(0x24C0E332B70019B0), U64(0x233003B5A6CFE6AD), U64(0xD586BD01C5C217F6),
257 U64(0x5E5637885F29BC2B), U64(0x7EBA726D8C94094B), U64(0x0A56A5F0BFE39272), U64(0xD79476A84EE20D06),
258 U64(0x9E4C1269BAA4BF37), U64(0x17EFEE45B0DEE640), U64(0x1D95B0A5FCF90BC6), U64(0x93CBE0B699C2585D),
259 U64(0x65FA4F227A2B6D79), U64(0xD5F9E858292504D5), U64(0xC2B5A03F71471A6F), U64(0x59300222B4561E00),
260 U64(0xCE2F8642CA0712DC), U64(0x7CA9723FBB2E8988), U64(0x2785338347F2BA08), U64(0xC61BB3A141E50E8C),
261 U64(0x150F361DAB9DEC26), U64(0x9F6A419D382595F4), U64(0x64A53DC924FE7AC9), U64(0x142DE49FFF7A7C3D),
262 U64(0x0C335248857FA9E7), U64(0x0A9C32D5EAE45305), U64(0xE6C42178C4BBB92E), U64(0x71F1CE2490D20B07),
263 U64(0xF1BCC3D275AFE51A), U64(0xE728E8C83C334074), U64(0x96FBF83A12884624), U64(0x81A1549FD6573DA5),
264 U64(0x5FA7867CAF35E149), U64(0x56986E2EF3ED091B), U64(0x917F1DD5F8886C61), U64(0xD20D8C88C8FFE65F),
265 U64(0x31D71DCE64B2C310), U64(0xF165B587DF898190), U64(0xA57E6339DD2CF3A0), U64(0x1EF6E6DBB1961EC9),
266 U64(0x70CC73D90BC26E24), U64(0xE21A6B35DF0C3AD7), U64(0x003A93D8B2806962), U64(0x1C99DED33CB890A1),
267 U64(0xCF3145DE0ADD4289), U64(0xD0E4427A5514FB72), U64(0x77C621CC9FB3A483), U64(0x67A34DAC4356550B),
268 U64(0xF8D626AAAF278509),
271 uint64 *RandomPiece =Random64;
272 uint64 *RandomCastle =Random64+768;
273 uint64 *RandomEnPassant =Random64+772;
274 uint64 *RandomTurn =Random64+780;
277 uint64 hash(int moveNr)
279 int r, f, p_enc, squareNr, pieceGroup;
280 uint64 key=0, holdingsKey=0, Zobrist;
282 for(f=0; f<BOARD_WIDTH; f++){
283 for(r=0; r<BOARD_HEIGHT;r++){
284 ChessSquare p = boards[moveNr][r][f];
285 if(f == BOARD_LEFT-1 || f == BOARD_RGHT) continue; // between board and holdings
286 if(p != EmptySquare){
288 j -= (j >= (int)BlackPawn) ? (int)BlackPawn :(int)WhitePawn;
289 if(j > (int)WhiteQueen) j++; // make space for King
290 if(j > (int) WhiteKing) j = (int)WhiteQueen + 1;
291 p_enc = 2*j + ((int)p < (int)BlackPawn);
292 // holdings squares get nmbers immediately after board; first left, then right holdings
293 if(f == BOARD_LEFT-2) squareNr = (BOARD_RGHT - BOARD_LEFT)*BOARD_HEIGHT + r; else
294 if(f == BOARD_RGHT+1) squareNr = (BOARD_RGHT - BOARD_LEFT + 1)*BOARD_HEIGHT + r; else
295 squareNr = (BOARD_RGHT - BOARD_LEFT)*r + (f - BOARD_LEFT);
296 // note that in normal Chess squareNr < 64 and p_enc < 12. The following code
297 // maps other pieces and squares in this range, and then modify the corresponding
298 // Zobrist random by rotating its bitpattern according to what the piece really was.
299 pieceGroup = p_enc / 12;
301 Zobrist = RandomPiece[64*p_enc + (squareNr & 63)];
303 case 1: // pieces 5-10 (FEACWM)
304 Zobrist = (Zobrist << 16) ^ (Zobrist >> 48);
306 case 2: // pieces 11-16 (OHIJGD)
307 Zobrist = (Zobrist << 32) ^ (Zobrist >> 32);
309 case 3: // pieces 17-20 (VLSU)
310 Zobrist = (Zobrist << 48) ^ (Zobrist >> 16);
313 if(squareNr >= 64) Zobrist = (Zobrist << 8) ^ (Zobrist >> 56);
314 // holdings have separate (additive) key, to encode presence of multiple pieces on same square
315 if(f == BOARD_LEFT-2) holdingsKey += Zobrist * boards[moveNr][r][f+1]; else
316 if(f == BOARD_RGHT+1) holdingsKey += Zobrist * boards[moveNr][r][f-1]; else
322 if(boards[moveNr][CASTLING][2] != NoRights) {
323 if(boards[moveNr][CASTLING][0] != NoRights) key^=RandomCastle[0];
324 if(boards[moveNr][CASTLING][1] != NoRights) key^=RandomCastle[1];
326 if(boards[moveNr][CASTLING][5] != NoRights) {
327 if(boards[moveNr][CASTLING][3] != NoRights) key^=RandomCastle[2];
328 if(boards[moveNr][CASTLING][4] != NoRights) key^=RandomCastle[3];
331 f = boards[moveNr][EP_STATUS];
333 if(!WhiteOnMove(moveNr)){
334 // the test for neighboring Pawns might not be needed,
335 // as epStatus already kept track of it, but better safe than sorry.
336 if((f>0 && boards[moveNr][3][f-1]==BlackPawn)||
337 (f<7 && boards[moveNr][3][f+1]==BlackPawn)){
338 key^=RandomEnPassant[f];
341 if((f>0 && boards[moveNr][4][f-1]==WhitePawn)||
342 (f<7 && boards[moveNr][4][f+1]==WhitePawn)){
343 key^=RandomEnPassant[f];
348 if(WhiteOnMove(moveNr)){
351 return key + holdingsKey;
356 int int_from_file(FILE *f, int l, uint64 *r)
369 int entry_from_file(FILE *f, entry_t *entry)
373 ret=int_from_file(f,8,&r);
376 ret=int_from_file(f,2,&r);
379 ret=int_from_file(f,2,&r);
382 ret=int_from_file(f,2,&r);
385 ret=int_from_file(f,2,&r);
387 entry->learnPoints=r;
391 int find_key(FILE *f, uint64 key, entry_t *entry)
393 int first, last, middle;
394 entry_t first_entry=entry_none, last_entry,middle_entry;
396 if(fseek(f,-16,SEEK_END)){
398 entry->key=key+1; //hack
402 entry_from_file(f,&last_entry);
408 middle=(first+last)/2;
409 fseek(f,16*middle,SEEK_SET);
410 entry_from_file(f,&middle_entry);
411 if(key<=middle_entry.key){
413 last_entry=middle_entry;
416 first_entry=middle_entry;
421 void move_to_string(char move_s[6], uint16 move)
423 int f,fr,ff,t,tr,tf,p;
424 int width = BOARD_RGHT - BOARD_LEFT, size; // allow for alternative board formats
426 size = width * BOARD_HEIGHT;
433 p = move / (size*size);
434 move_s[0] = ff + 'a';
435 move_s[1] = fr + '1' - (BOARD_HEIGHT > 9);
436 move_s[2] = tf + 'a';
437 move_s[3] = tr + '1' - (BOARD_HEIGHT > 9);
439 // kludge: encode drops as special promotion code
440 if(gameInfo.holdingsSize && p == 8) {
441 move_s[0] = f + '@'; // from square encodes piece type
442 move_s[1] = '@'; // drop symbol
446 // add promotion piece, if any
448 move_s[4] = promote_pieces[p];
454 if(gameInfo.variant != VariantNormal) return;
456 // correct FRC-style castlings in variant normal.
457 // [HGM] This is buggy code! e1h1 could very well be a normal R or Q move.
458 if(!strcmp(move_s,"e1h1")){
459 safeStrCpy(move_s,"e1g1", 6);
460 }else if(!strcmp(move_s,"e1a1")){
461 safeStrCpy(move_s,"e1c1", 6);
462 }else if(!strcmp(move_s,"e8h8")){
463 safeStrCpy(move_s,"e8g8", 6);
464 }else if(!strcmp(move_s,"e8a8")){
465 safeStrCpy(move_s,"e8c8", 6);
469 int GetBookMoves(int moveNr, char *book, entry_t entries[])
470 { // retrieve all entries for given position from book in 'entries', return number.
471 static FILE *f = NULL;
472 static char curBook[MSG_SIZ];
479 if(book == NULL || moveNr >= 2*appData.bookDepth) return -1;
480 // if(gameInfo.variant != VariantNormal) return -1; // Zobrist scheme only works for normal Chess, so far
481 if(!f || strcmp(book, curBook)){ // keep book file open until book changed
482 strncpy(curBook, book, MSG_SIZ);
484 f = fopen(book,"rb");
487 DisplayError("Polyglot book not valid", 0);
488 appData.usePolyglotBook = FALSE;
493 if(appData.debugMode) fprintf(debugFP, "book key = %08x%08x\n", (unsigned int)(key>>32), (unsigned int)key);
495 offset=find_key(f, key, &entry);
496 if(entry.key != key) {
501 fseek(f, 16*(offset+1), SEEK_SET);
503 ret=entry_from_file(f, &entry);
507 if(entry.key != key){
510 if(count == MOVE_BUF) break;
511 entries[count++] = entry;
516 char *ProbeBook(int moveNr, char *book)
518 entry_t entries[MOVE_BUF];
521 static char move_s[6];
524 if((count = GetBookMoves(moveNr, book, entries)) <= 0) return NULL; // no book, or no hit
526 if(appData.bookStrength != 50) { // transform weights
527 double power = 0, maxWeight = 0.0;
528 if(appData.bookStrength) power = (100.-appData.bookStrength)/appData.bookStrength;
529 for(i=0; i<count; i++) if(entries[i].weight > maxWeight) maxWeight = entries[i].weight;
530 for(i=0; i<count; i++){
531 double weight = entries[i].weight / maxWeight;
533 entries[i].weight = appData.bookStrength || weight == 1.0 ? 1e4*exp(power * log(weight)) + 0.5 : 0.0;
537 for(i=0; i<count; i++){
538 total_weight += entries[i].weight;
540 if(total_weight == 0) return NULL; // force book miss rather than playing moves with weight 0.
541 j = (random() & 0xFFF) * total_weight >> 12; // create random < total_weight
543 for(i=0; i<count; i++){
544 total_weight += entries[i].weight;
545 if(total_weight > j) break;
547 if(i >= count) DisplayFatalError("Book Fault", 0, 1); // safety catch, cannot happen
548 move_to_string(move_s, entries[i].move);
549 if(appData.debugMode) fprintf(debugFP, "book move field = %d\n", entries[i].move);
554 extern char yy_textstr[];
555 entry_t lastEntries[MOVE_BUF];
557 char *MovesToText(int count, entry_t *entries)
559 int i, totalWeight = 0;
561 char *p = (char*) malloc(30*count+1);
562 for(i=0; i<count; i++) totalWeight += entries[i].weight;
564 for(i=0; i<count; i++) {
566 move_to_string(algMove, entries[i].move);
568 if(entries[i].learnCount || entries[i].learnPoints)
569 snprintf(buf, MSG_SIZ, " {%d/%d}", entries[i].learnPoints, entries[i].learnCount);
570 snprintf(p+strlen(p), 30, "%5.1f%% %5d %s%s\n", 100*entries[i].weight/(totalWeight+0.001),
571 entries[i].weight, algMove, buf);
572 //lastEntries[i] = entries[i];
577 int TextToMoves(char *text, int moveNum, entry_t *entries)
580 uint64 hashKey = hash(moveNum);
581 int fromX, fromY, toX, toY, to, from;
583 char promoChar, valid;
585 int width = BOARD_RGHT - BOARD_LEFT;
587 entries[0].key = hashKey; // make sure key is returned even if no moves
588 while((i=sscanf(text, "%f%%%d", &dummy, &w))==2 || (i=sscanf(text, "%d", &w))==1) {
589 if(i == 2) text = strchr(text, '%') + 1; // skip percentage
590 if(w == 1) text = strstr(text, "1 ") + 2; // skip weight that could be recognized as move number one
591 valid = ParseOneMove(text, moveNum, &moveType, &fromX, &fromY, &toX, &toY, &promoChar);
592 text = strstr(text, yy_textstr) + strlen(yy_textstr); // skip what we parsed
593 if(!valid || moveType != NormalMove) continue;
594 if(*text == ' ' && sscanf(text+1, "{%hd/%hd}", &entries[count].learnPoints, &entries[count].learnCount) == 2) {
595 text = strchr(text+1, '}') + 1;
597 entries[count].learnPoints = 0;
598 entries[count].learnCount = 0;
600 to = toX + toY * width;
601 from = fromX + fromY * width;
602 for(i=0; promote_pieces[i]; i++) if(promote_pieces[i] == promoChar) break;
603 if(!promote_pieces[i]) i = 0;
604 if(fromY == DROP_RANK) i = 8, from = ToUpper(PieceToChar(fromX)) - '@';
605 entries[count].move = to + (i * width * BOARD_HEIGHT + from) * width * BOARD_HEIGHT;
606 entries[count].key = hashKey;
607 entries[count].weight = w;
616 Boolean DisplayBook(int moveNr)
618 entry_t entries[MOVE_BUF];
621 if(!bookUp) return FALSE;
622 count = currentCount = GetBookMoves(moveNr, appData.polyglotBook, entries);
623 if(count < 0) return FALSE;
624 p = MovesToText(count, entries);
625 EditTagsPopUp(p, NULL);
633 bookUp = DisplayBook(currentMove);
636 void int_to_file(FILE *f, int l, uint64 r)
639 for(i=l-1;i>=0;i--) fputc(r>>8*i & 255, f);
642 void entry_to_file(FILE *f, entry_t *entry)
644 int_to_file(f,8,entry->key);
645 int_to_file(f,2,entry->move);
646 int_to_file(f,2,entry->weight);
647 int_to_file(f,2,entry->learnCount);
648 int_to_file(f,2,entry->learnPoints);
651 char buf1[4096], buf2[4096];
653 void SaveToBook(char *text)
655 entry_t entries[MOVE_BUF], entry;
656 int count = TextToMoves(text, currentMove, entries);
657 int offset, i, len1=0, len2, readpos=0, writepos=0;
659 if(!count && !currentCount) return;
660 f=fopen(appData.polyglotBook, "rb+");
661 if(!f){ DisplayError("Polyglot book not valid", 0); return; }
662 offset=find_key(f, entries[0].key, &entry);
663 if(entries[0].key != entry.key && currentCount) {
664 DisplayError("Hash keys are different", 0);
668 if(count != currentCount) {
669 readpos = 16*(offset + currentCount);
670 writepos = 16*(offset + count);
671 fseek(f, readpos, SEEK_SET);
672 readpos += len1 = fread(buf1, 1, 4096 - 16*currentCount, f); // salvage some entries immediately behind change
674 fseek(f, 16*(offset), SEEK_SET);
675 for(i=0; i<count; i++) entry_to_file(f, entries + i); // save the change
676 if(count != currentCount) {
678 for(i=0; i<len1; i++) buf2[i] = buf1[i]; len2 = len1;
679 if(readpos > writepos) {
680 fseek(f, readpos, SEEK_SET);
681 readpos += len1 = fread(buf1, 1, 4096, f);
682 } else len1 = 0; // wrote already past old EOF
683 fseek(f, writepos, SEEK_SET);
684 fwrite(buf2, 1, len2, f);