use core::{
fmt,
hash::{Hash, Hasher},
ops::{BitXor, BitXorAssign},
};
use crate::{
Board, ByColor, ByRole, CastlingSide, Color, EnPassantMode, File, Piece, Position,
RemainingChecks, Role, Square,
};
pub trait ZobristValue: BitXorAssign + Default + Copy {
fn zobrist_for_piece(square: Square, piece: Piece) -> Self;
fn zobrist_for_white_turn() -> Self;
fn zobrist_for_castling_right(color: Color, side: CastlingSide) -> Self;
fn zobrist_for_en_passant_file(file: File) -> Self;
fn zobrist_for_remaining_checks(color: Color, remaining: RemainingChecks) -> Self;
fn zobrist_for_promoted(square: Square) -> Self;
fn zobrist_for_pocket(color: Color, role: Role, pieces: u8) -> Self;
}
macro_rules! zobrist_value_impl {
($t:ident, $proxy:ty, $bits:literal) => {
#[derive(Default, Copy, Clone, Eq)]
#[doc = "A [`ZobristValue`] with "]
#[doc = stringify!($bits)]
#[doc = " bits."]
pub struct $t(pub $proxy);
impl PartialEq for $t {
#[inline]
fn eq(&self, other: &$t) -> bool {
self.0 == other.0
}
}
impl From<$proxy> for $t {
#[inline]
fn from(value: $proxy) -> $t {
$t(value)
}
}
impl From<$t> for $proxy {
#[inline]
fn from(value: $t) -> $proxy {
value.0
}
}
impl BitXor for $t {
type Output = $t;
#[inline]
fn bitxor(self, other: $t) -> $t {
$t(self.0 ^ other.0)
}
}
impl BitXor<&$t> for $t {
type Output = $t;
#[inline]
fn bitxor(self, other: &$t) -> $t {
$t(self.0 ^ other.0)
}
}
impl BitXor<&$t> for &$t {
type Output = $t;
#[inline]
fn bitxor(self, other: &$t) -> $t {
$t(self.0 ^ other.0)
}
}
impl BitXor<$t> for &$t {
type Output = $t;
#[inline]
fn bitxor(self, other: $t) -> $t {
$t(self.0 ^ other.0)
}
}
impl BitXorAssign for $t {
#[inline]
fn bitxor_assign(&mut self, rhs: $t) {
self.0 ^= rhs.0;
}
}
impl BitXorAssign<&$t> for $t {
#[inline]
fn bitxor_assign(&mut self, rhs: &$t) {
self.0 ^= rhs.0;
}
}
impl fmt::Debug for $t {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, concat!(stringify!($t), "({:#x})"), self.0)
}
}
impl fmt::UpperHex for $t {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::UpperHex::fmt(&self.0, f)
}
}
impl fmt::LowerHex for $t {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::LowerHex::fmt(&self.0, f)
}
}
impl fmt::Octal for $t {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Octal::fmt(&self.0, f)
}
}
impl fmt::Binary for $t {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Binary::fmt(&self.0, f)
}
}
impl ZobristValue for $t {
#[inline]
fn zobrist_for_piece(square: Square, piece: Piece) -> $t {
#[allow(overflowing_literals)]
static PIECE_MASKS: ByColor<ByRole<[$proxy; 64]>> = ByColor {
black: ByRole {
pawn: [
0x52b3_75aa_7c0d_7bac_9d39_247e_3377_6d41,
0x208d_169a_534f_2cf5_2af7_3980_05aa_a5c7,
0x8981_5137_22b4_7f24_44db_0150_2462_3547,
0x09b8_f20f_910a_8ff7_9c15_f73e_62a7_6ae2,
0x0b8e_a702_5520_9cc0_7583_4465_489c_0c89,
0xa688_a979_1f02_7500_3290_ac3a_2030_01bf,
0x19b8_8b8f_faed_8f55_0fbb_ad1f_6104_2279,
0x88bf_7822_d00d_5526_e83a_908f_f2fb_60ca,
0xdb7b_f62a_b390_b71b_0d7e_765d_5875_5c10,
0x33a6_ac1d_85c9_f22f_1a08_3822_ceaf_e02d,
0x55ab_2a27_271d_42ac_9605_d5f0_e25e_c3b0,
0x40a2_1ff9_c803_fca4_d021_ff5c_d13a_2ed5,
0x3c16_9aeb_80a1_d5d2_40bd_f15d_4a67_2e32,
0x8768_4e27_293e_cf96_0113_5514_6fd5_6395,
0xf8b9_1b39_d4c6_997c_5db4_8320_46f3_d9e5,
0x1d5f_744f_312f_d467_239f_8b2d_7ff7_19cc,
0xeda1_8c45_2d5d_e5b4_05d1_a1ae_85b4_9aa1,
0x7497_db88_8ecc_da0f_679f_848f_6e8f_c971,
0x94c1_bb70_1674_9887_7449_bbff_801f_ed0b,
0x35b2_3d66_3606_fde2_7d11_cdb1_c3b7_adf0,
0x17b4_ae80_b818_4845_82c7_709e_781e_b7cc,
0x8bd9_8922_a308_9d8e_f321_8f1c_9510_786c,
0xfec7_7fb0_7cea_5e84_3314_78f3_af51_bbe6,
0xe153_a54d_23c9_3a8a_4bb3_8de5_e721_9443,
0xa196_fa76_c244_05eb_aa64_9c6e_bcfd_50fc,
0x6f33_3e11_d079_240a_8dbd_98a3_52af_d40b,
0x23b8_d480_df5b_b521_87d2_074b_81d7_9217,
0x634a_daec_002b_3000_19f3_c751_d3e9_2ae1,
0x3d0e_41d6_5872_d549_b4ab_30f0_62b1_9abf,
0x5aba_8390_8462_b892_7b05_00ac_4204_7ac4,
0x2645_7864_aff2_88af_c945_2ca8_1a09_d85d,
0x43f1_0561_015d_a64e_24aa_6c51_4da2_7500,
0x545c_c628_5df4_2807_4c9f_3442_7501_b447,
0xa714_0dc7_b82e_96ef_14a6_8fd7_3c91_0841,
0xb1dc_adc8_fe30_a8d4_a71b_9b83_461c_bd93,
0x72eb_d048_ba37_3ac4_0348_8b95_b0f1_850f,
0x2eb0_ddf1_351a_1adb_637b_2b34_ff93_c040,
0x9cdc_8c44_a201_836d_09d1_bc9a_3dd9_0a94,
0x0afc_1fb4_5a72_8973_3575_6683_34a1_dd3b,
0x58c8_fa41_5b96_ec95_735e_2b97_a4c4_5a23,
0x497a_9b9a_7f9f_8872_1872_7070_f1bd_400b,
0xbff8_4079_9ee0_5fdf_1fcb_acd2_59bf_02e7,
0xe4ec_1554_316c_2704_d310_a7c2_ce9b_6555,
0x3c9f_0c8b_89f3_1f3e_bf98_3fe0_fe5d_8244,
0x4a60_1b99_475b_af4e_9f74_d14f_7454_a824,
0x6c65_e138_6536_c3a9_51eb_dc4a_b9ba_3035,
0xb60a_571d_59e8_a485_5c82_c505_db9a_b0fa,
0xe23c_5d70_4569_6d85_fcf7_fe8a_3430_b241,
0xc9d4_d61b_569e_c607_3253_a729_b9ba_3dde,
0xce9e_d71a_6d18_deb2_8c74_c368_081b_3075,
0x2dbc_1655_9bdb_a870_b9bc_6c87_167c_33e7,
0x50cd_a533_9d83_6c83_7ef4_8f2b_8302_4e20,
0x9809_1ef4_f2ab_1ed3_11d5_05d4_c351_bd7f,
0xf580_3ac1_7fc4_5ecf_6568_fca9_2c76_a243,
0x0973_0ef1_5a78_c687_4de0_b0f4_0f32_a7b8,
0xf8bb_209d_715a_b566_96d6_9346_0cc3_7e5d,
0x0c5b_201d_6cb8_9a50_42e2_40cb_6368_9f2f,
0x5257_1fbf_abb4_a367_6d2b_dcda_e291_9661,
0x1b1d_b822_6989_0861_4288_0b02_36e4_d951,
0x9423_f70e_d512_f1ea_5f0f_4a58_9817_1bb6,
0x79e4_48c7_2183_e2a5_39f8_90f5_79f9_2f88,
0x3c88_a0cf_5b85_2900_93c5_b5f4_7356_388b,
0x9e12_f819_acaa_6653_63dc_359d_8d23_1b78,
0xc6f0_9266_299a_5902_ec16_ca8a_ea98_ad76,
],
knight: [
0x6a07_7209_3f97_e152_5643_6c9f_e1a1_aa8d,
0xfa76_d367_19e7_e5e3_efac_4b70_633b_8f81,
0x2e79_9233_a544_062a_bb21_5798_d45d_f7af,
0xe003_4511_44a0_3be8_45f2_0042_f24f_1768,
0x974d_8f4e_e692_ed35_930f_80f4_e8eb_7462,
0xd30a_fadf_c4dc_52f5_ff67_12ff_cfd7_5ea1,
0x278d_de02_bf30_c1da_ae62_3fd6_7468_aa70,
0x8b7e_3a2b_f5a0_61a3_dd2c_5bc8_4bc8_d8fc,
0xd144_3752_e511_a579_7eed_120d_54cf_2dd9,
0xd1b0_2672_a0ec_44cf_22fe_5454_0116_5f1c,
0xba30_05c8_5125_14f1_c918_00e9_8fb9_9929,
0x2e3b_8621_1f6b_4295_808b_d68e_6ac1_0365,
0x0574_31bf_eaa9_d6f5_dec4_6814_5b76_05f6,
0xa348_ddd6_6378_afaf_1bed_e3a3_aef5_3302,
0x4a18_1777_5b08_6ce1_4353_9603_d6c5_5602,
0x184b_1c98_3a6a_1a77_aa96_9b5c_691c_cb7a,
0xcb70_392e_7b7d_b185_a878_32d3_92ef_ee56,
0x3b1b_1166_a648_330e_6594_2c7b_3c7e_11ae,
0xe520_1b15_5f51_cc30_ded2_d633_cad0_04f6,
0x4d05_3ee8_65f2_1b96_21f0_8570_f420_e565,
0xd8d8_062e_343d_9c66_b415_938d_7da9_4e3c,
0x1350_7b31_a966_da7d_91b8_59e5_9ecb_6350,
0xd637_536d_2e7a_58b0_10cf_f333_e0ed_804a,
0xcbca_e035_eab8_24a0_28ae_d140_be0b_b7dd,
0x8c77_fe1e_1b06_691b_c5cc_1d89_724f_a456,
0xfd78_41ed_1ab4_b961_5648_f680_f11a_2741,
0xcaa8_8da0_1766_9d53_2d25_5069_f0b7_dab3,
0xabda_5baf_650b_3675_9bc5_a38e_f729_abd4,
0xfe14_d0c6_b8f1_1e97_ef2f_0543_08f6_a2bc,
0xc134_23f8_1c4b_9adf_af20_42f5_cc5c_2858,
0x3450_7a35_0393_5243_4804_12ba_b7f5_be2a,
0xec50_4bd0_c7ae_79a1_aef3_af4a_563d_fe43,
0x0bc7_61ea_4004_d2ae_19af_e59a_e451_497f,
0x3a07_4807_8a78_fd4d_5259_3803_dff1_e840,
0xc5f3_6bde_8caa_93fe_f4f0_76e6_5f2c_e6f0,
0x5b22_99dc_4408_0278_1137_9625_747d_5af3,
0x3f99_cbeb_6ec6_53fa_bce5_d224_8682_c115,
0x48eb_cfc0_04b5_24ca_9da4_243d_e836_994f,
0xd227_8829_cd34_4d05_066f_70b3_3fe0_9017,
0x5fe6_37e5_8fc1_c0f3_4dc4_de18_9b67_1a1c,
0x0a4b_136f_25a6_5a32_5103_9ab7_7124_57c3,
0x4119_314b_520d_04d9_c07a_3f80_c31f_b4b4,
0x5354_a8b0_8947_cc8e_b46e_e9c5_e64a_6e7c,
0x6001_d6a9_4517_300b_b381_9a42_abe6_1c87,
0x1459_7a07_4f13_3855_21a0_0793_3a52_2a20,
0xdc9a_6baf_92ff_de03_2df1_6f76_1598_aa4f,
0xc5cb_c527_0de9_86b0_763c_4a13_71b3_68fd,
0x95c7_2d49_bd75_60be_f793_c467_02e0_86a0,
0x12b4_37e4_c286_737a_d728_8e01_2aeb_8d31,
0xaa7c_6f89_f144_2c5d_de33_6a2a_4bc1_c44b,
0x1a3e_bbf3_17bf_c4d8_0bf6_92b3_8d07_9f23,
0x4ad3_c9fa_863a_5aa3_2c60_4a7a_1773_26b3,
0xc7c9_4147_de66_3b5b_4850_e73e_03eb_6064,
0x840e_7fe4_b35d_4a4b_cfc4_47f1_e53c_8e1b,
0x8921_1091_26e2_3341_b05c_a3f5_6426_8d99,
0xa18a_4f12_c127_de17_9ae1_82c8_bc94_74e8,
0x4719_73e4_dc6e_fb4b_a4fc_4bd4_fc55_58ca,
0xc723_867b_98d0_7330_e755_178d_58fc_4e76,
0xf5fc_c6de_3509_50d1_69b9_7db1_a4c0_3dfe,
0xb909_13e0_2bde_576a_f9b5_b7c4_acc6_7c96,
0x5554_c92f_272b_73c5_fc6a_82d6_4b86_55fb,
0x3738_a3f0_fdf5_d9c6_9c68_4cb6_c4d2_4417,
0x3771_f25e_5e27_8ee3_8ec9_7d29_1745_6ed0,
0xa9d5_8a81_2b10_906e_6703_df9d_2924_e97e,
],
bishop: [
0x1497_56bc_2136_8632_7f9b_6af1_ebf7_8baf,
0x25c8_0f32_3a51_6eaa_5862_7e1a_149b_ba21,
0x3ea0_39f7_ff28_ae8e_2cd1_6e2a_bd79_1e33,
0x0caf_481f_4006_3dd8_d363_eff5_f097_7996,
0xbce2_3e10_6b1e_efd7_0ce2_a38c_344a_6eed,
0x1085_3ea8_2a5c_cb34_1a80_4aad_b9cf_a741,
0xe7c7_6ac3_dbbf_8c8c_907f_3042_1d78_c5de,
0x1624_c0ce_1532_313d_501f_65ed_b303_4d07,
0x5f38_95b2_5d7b_4744_3762_4ae5_a48f_a6e9,
0xfbe3_63cb_b55a_913e_957b_af61_700c_ff4e,
0x3585_0e8f_6340_0ddd_3a6c_2793_4e31_188a,
0x3d30_0047_b5dd_de66_d495_0353_6abc_a345,
0x1c1c_7ca8_b338_6353_088e_0495_89c4_32e0,
0x986e_c52a_c2c8_8cec_f943_aee7_febf_21b8,
0xc93b_616a_554d_23c8_6c3b_8e3e_3361_39d3,
0x211d_7b57_59da_7504_364f_6ffa_464e_e52e,
0xf266_3fc5_9b54_1585_d60f_6dce_dc31_4222,
0xf57f_efea_db21_b029_5696_3b0d_ca41_8fc0,
0x30fd_60d9_ee26_0966_16f5_0edf_91e5_13af,
0x3c29_da00_0d5b_9a08_ef19_5591_4b60_9f93,
0xd0d6_203f_a69d_a0ba_5656_01c0_364e_3228,
0x8167_e4bd_87c6_f05e_ecb5_3939_887e_8175,
0x5c06_3405_c62f_8154_bac7_a9a1_8531_294b,
0xb86f_e57d_5308_1fe6_b344_c470_397b_ba52,
0xeb60_ad08_0cd5_73fe_65d3_4954_daf3_cebd,
0xbfbb_b416_0263_5b78_b4b8_1b3f_a975_11e2,
0x4e39_d536_b723_213c_b422_0611_93d6_f6a7,
0x56d7_e046_8df1_5a47_0715_8240_1c38_434d,
0x9e60_1537_348e_d732_7a13_f18b_bedc_4ff5,
0xee2e_827d_9faa_74c1_bc40_97b1_16c5_24d2,
0xe433_02e0_d517_a316_59b9_7885_e2f2_ea28,
0xf662_e9ba_781a_1fae_9917_0a5d_c311_5544,
0xe83d_a2ef_ce44_2856_6f42_3357_e7c6_a9f9,
0x143a_e097_749a_513a_3259_28ee_6e6f_8794,
0xa203_386e_6a86_f7c7_d0e4_3662_28b0_3343,
0x7390_5f8c_5056_ecee_565c_31f7_de89_ea27,
0x0da0_7ce4_4c01_42e4_30f5_6114_8411_9414,
0x8b9e_9700_3ef0_1d2e_d873_db39_1292_ed4f,
0xd8c6_66a6_6584_0842_7bd9_4e1d_8e17_debc,
0x8bb1_069b_ba16_9263_c7d9_f168_64a7_6e94,
0x6bdc_866d_7daa_19dc_947a_e053_ee56_e63c,
0xe111_5bb3_f8ad_0cfe_c8c9_3882_f947_5f5f,
0x0859_ae34_a51e_d77c_3a9b_f55b_a91f_81ca,
0xf1d7_3663_c53a_0156_d9a1_1fbb_3d98_08e4,
0x6692_83df_212c_93db_0fd2_2063_edc2_9fca,
0x7489_abc0_8bd4_db15_b3f2_56d8_aca0_b0b9,
0xf9d2_b26d_0375_aab0_b030_31a8_b451_6e84,
0xde48_56e7_777e_27d1_35dd_37d5_8714_48af,
0x2cae_af61_386f_a1f2_e9f6_082b_0554_2e4e,
0x7c6d_4b00_383f_052a_ebfa_fa33_d725_4b59,
0xb194_3df6_ea36_87ff_9255_abb5_0d53_2280,
0x7e4d_1bac_a94d_a20d_b9ab_4ce5_7f2d_34f3,
0x38d1_a6b6_448f_dc40_6935_01d6_2829_7551,
0x8aed_5305_1756_d212_c62c_58f9_7dd9_49bf,
0x1805_fa74_82c6_0f4e_cd45_4f8f_19c5_126a,
0x24c9_891c_2f4d_b0b1_bbe8_3f4e_cc2b_decb,
0xbb70_3190_b30e_b664_dc84_2b7e_2819_e230,
0xb52f_857f_41e6_8fce_ba89_142e_0075_03b8,
0xeb5a_7a71_4d4e_c1a1_a3bc_941d_0a50_61cb,
0xc413_34a3_6d42_11ea_e9f6_760e_32cd_8021,
0xe601_88ec_b537_010d_09c7_e552_bc76_492f,
0xff67_dd93_2e57_55cc_852f_5493_4da5_5cc9,
0x14c9_2be5_5246_7cfb_8107_fccf_064f_cf56,
0xc94f_b8ea_e42b_3453_0989_54d5_1fff_6580,
],
rook: [
0x2bb2_c23c_899c_bc9e_da3a_361b_1c51_57b1,
0xbfb0_766d_2652_6dbf_dcdd_7d20_903d_0c25,
0x166d_bdc3_8309_e26b_3683_3336_d068_f707,
0x6796_f7e1_1a4c_3cba_ce68_341f_7989_3389,
0x562c_093e_14a8_7ff2_ab90_9016_8dd0_5f34,
0x3627_e637_e241_3092_4395_4b32_52dc_25e5,
0x2404_1470_2e63_067a_b438_c2b6_7f98_e5e9,
0xa6f6_3494_f774_323c_10dc_d78e_3851_a492,
0xc19e_a801_fb34_4afb_dbc2_7ab5_4478_22bf,
0x9d18_e8c2_1a6c_8c61_9b3c_db65_f82c_a382,
0x87f9_503f_9fde_d941_b67b_7896_167b_4c84,
0x3e50_98f6_27c4_ed6c_bfce_d1b0_048e_ac50,
0x6eb0_6344_3f58_c2ae_a911_9b60_369f_febd,
0x3427_2006_16f6_5462_1fff_7ac8_0904_bf45,
0xe3b7_4fe5_5c76_691f_ac12_fb17_1817_eee7,
0xd631_6d50_08f9_32ec_af08_da91_77dd_a93d,
0x35a0_d4ca_7416_842f_1b0c_ab93_6e65_c744,
0xde46_8328_6c56_072d_b559_eb1d_04e5_e932,
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],
},
white: ByRole {
pawn: [
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0x26a5_8648_fd56_deab_9f91_508b_ffcf_c14a,
0x5da2_dbf1_0323_e25c_049a_7f41_061a_9e60,
0x1e3e_d1a3_9072_4f66_fcb6_be43_a9f2_fe9b,
0xc761_5961_9f3a_f003_08de_8a1c_7797_da9b,
0xb4af_22b5_f5b2_6389_8f98_87e6_0787_35a1,
0x4667_92d7_a2e6_c6fa_b5b4_071d_bfc7_3a66,
],
king: [
0xc24a_a6db_9b0e_9300_55b6_344c_f97a_afae,
0x8478_cc06_efce_550e_b862_225b_055b_6960,
0x82e3_ec2c_cd28_350f_cac0_9afb_ddd2_cdb4,
0xbc05_9bb7_4b99_3690_daf8_e982_9fe9_6b5f,
0xe311_11d1_4445_238b_b5fd_fc5d_3132_c498,
0xa7ed_1df7_7e79_a736_310c_b380_db6f_7503,
0xa137_dc05_8288_8c63_e87f_bb46_217a_360e,
0x7630_e700_4028_1934_2102_ae46_6ebb_1148,
0x2c17_c3b7_4634_a6d6_f854_9e1a_3aa5_e00d,
0x05ef_f03a_838a_4fb4_07a6_9afd_cc42_261a,
0x3c28_d21d_40d4_f80e_c4c1_18bf_e78f_eaae,
0xbeb9_cec1_8b16_3f7c_f9f4_892e_d96b_d438,
0xdc75_1952_9748_4115_1af3_dbe2_5d8f_45da,
0x5489_55be_3bde_572b_f5b4_b0b0_d2de_eeb4,
0xc828_1bde_4d28_0b81_962a_ceef_a82e_1c84,
0x914d_a129_a132_922b_046e_3eca_af45_3ce9,
0xff11_d08f_1cee_77a4_f05d_1296_8194_9a4c,
0x8070_295b_d01f_6bfd_9647_81ce_734b_3c84,
0x006a_9346_f317_a9c9_9c2e_d440_81ce_5fbd,
0x37e6_2ccd_f973_9fc3_522e_23f3_925e_319e,
0x5cbf_8b75_3a7e_703c_177e_00f9_fc32_f791,
0xfe0f_162f_cebe_01c8_2bc6_0a63_a6f3_b3f2,
0x094f_481a_19d4_64ff_222b_bfae_6172_5606,
0x9737_e370_b3c6_79cf_4862_89dd_cc3d_6780,
0x60d6_7575_f3b9_b1c2_7dc7_785b_8efd_fc80,
0x3948_fbaf_4119_6093_8af3_8731_c02b_a980,
0x0c20_4d1c_fdbf_6e2a_1fab_64ea_29a2_ddf7,
0xb7d2_d42a_9be2_9c2a_e4d9_4293_22cd_065a,
0x49fa_e729_fc29_74b3_9da0_58c6_7844_f20c,
0x6fb2_6356_dad9_8ed6_24c0_e332_b700_19b0,
0x4847_b6cc_14ee_ffd4_2330_03b5_a6cf_e6ad,
0x3b52_85a9_f015_2c99_d586_bd01_c5c2_17f6,
0xff1f_e7f4_b91c_ff4c_5e56_3788_5f29_bc2b,
0x16e2_0774_363e_99d0_7eba_726d_8c94_094b,
0x437d_1aa9_cb41_59e0_0a56_a5f0_bfe3_9272,
0x7bdc_c9d5_c1c4_da0b_d794_76a8_4ee2_0d06,
0x8fd0_8773_3782_eecd_9e4c_1269_baa4_bf37,
0xbf94_dee3_ad47_8cda_17ef_ee45_b0de_e640,
0x83c9_4bbe_4c62_3bf5_1d95_b0a5_fcf9_0bc6,
0x08fd_a03a_a45e_e9ba_93cb_e0b6_99c2_585d,
0xc188_f92d_4d40_3856_65fa_4f22_7a2b_6d79,
0xfd66_11df_b123_45fc_d5f9_e858_2925_04d5,
0xef00_3ffd_18ae_cc12_c2b5_a03f_7147_1a6f,
0xb7b4_74cb_f293_4019_5930_0222_b456_1e00,
0xbc2a_55e5_8b30_deee_ce2f_8642_ca07_12dc,
0x3e77_de18_337c_da42_7ca9_723f_bb2e_8988,
0x2f81_e058_ffb7_5885_2785_3383_47f2_ba08,
0x8f0c_300c_f585_707e_c61b_b3a1_41e5_0e8c,
0xcf4f_4c53_6e0e_2af2_150f_361d_ab9d_ec26,
0x24c8_1ee5_fd39_a8e4_9f6a_419d_3825_95f4,
0x2841_577e_66ad_726e_64a5_3dc9_24fe_7ac9,
0x6809_0c81_a135_7214_142d_e49f_ff7a_7c3d,
0xa6aa_70d4_4a61_3a24_0c33_5248_857f_a9e7,
0xdb80_5d26_087f_4db9_0a9c_32d5_eae4_5305,
0x6dd9_54b4_5a12_2182_e6c4_2178_c4bb_b92e,
0xc347_29fd_9f19_48a3_71f1_ce24_90d2_0b07,
0xf068_2ca0_764c_c153_f1bc_c3d2_75af_e51a,
0xbf29_8242_79ca_73e1_e728_e8c8_3c33_4074,
0xf0c7_0fb4_e725_caff_96fb_f83a_1288_4624,
0x1e18_cad8_09e9_eedc_81a1_549f_d657_3da5,
0xa893_a8fa_258f_383e_5fa7_867c_af35_e149,
0xe78c_30cc_1179_b849_5698_6e2e_f3ed_091b,
0x2e44_32e6_ce49_96d9_917f_1dd5_f888_6c61,
0x576e_c7a8_4e0b_932d_d20d_8c88_c8ff_e65f,
],
},
};
$t(PIECE_MASKS.get(piece.color).get(piece.role)[usize::from(square)])
}
#[inline]
fn zobrist_for_white_turn() -> $t {
#[allow(overflowing_literals)]
$t(0x3815_e537_b622_2c85_f8d6_26aa_af27_8509)
}
#[inline]
fn zobrist_for_castling_right(color: Color, side: CastlingSide) -> $t {
#[allow(overflowing_literals)]
static CASTLING_RIGHT_MASKS: ByColor<[$proxy; 2]> = ByColor {
black: [
0x7756_8e6e_6151_6b92_a57e_6339_dd2c_f3a0,
0xd153_e6cf_8d19_84ea_1ef6_e6db_b196_1ec9,
],
white: [
0xca3c_7f8d_050c_44ba_31d7_1dce_64b2_c310,
0x8f50_a115_834e_5414_f165_b587_df89_8190,
],
};
$t(CASTLING_RIGHT_MASKS.get(color)[side as usize])
}
#[inline]
fn zobrist_for_en_passant_file(file: File) -> $t {
#[allow(overflowing_literals)]
static EN_PASSANT_FILE_MASKS: [$proxy; 8] = [
0x1309_9942_ab63_3504_70cc_73d9_0bc2_6e24,
0x946c_7352_9a2f_3850_e21a_6b35_df0c_3ad7,
0x3d1a_dc27_d706_b921_003a_93d8_b280_6962,
0x994b_8bd2_60c3_fad2_1c99_ded3_3cb8_90a1,
0xf4cf_0c83_cace_7fe4_cf31_45de_0add_4289,
0x5480_7a18_b695_2e27_d0e4_427a_5514_fb72,
0xe2a1_aff4_0d08_315c_77c6_21cc_9fb3_a483,
0x47ec_43ff_bc09_2584_67a3_4dac_4356_550b,
];
$t(EN_PASSANT_FILE_MASKS[usize::from(file)])
}
#[inline]
fn zobrist_for_remaining_checks(color: Color, remaining: RemainingChecks) -> $t {
#[allow(overflowing_literals)]
static REMAINING_CHECKS_MASKS: ByColor<[$proxy; 2]> = ByColor {
black: [
0x6a2a_d922_a69a_13e9_1d6d_c0ee_61ce_803e,
0x49b5_72c7_9420_27d5_c628_4b65_3d38_e96a,
],
white: [
0x08c2_e927_1dc9_1e69_803f_5fb0_d2f9_7fae,
0x088d_fad9_83bb_7913_b183_ccc9_e73d_f9ed,
],
};
let masks = REMAINING_CHECKS_MASKS.get(color);
let n = !<$proxy>::from(remaining);
$t(((n & 1) * masks[0]) ^ (((n >> 1) & 1) * masks[1]))
}
#[inline]
fn zobrist_for_promoted(square: Square) -> $t {
#[allow(overflowing_literals)]
static PROMOTED_MASKS: [$proxy; 64] = [
0x2b91_78eb_57f3_db25_2f99_00cc_2b7a_19ca,
0x17d1_6678_351d_3778_f752_35be_b018_86d3,
0x88b1_7afb_dae8_36b1_8ae7_e298_89ac_9964,
0xa898_5bb0_47c3_88b1_ad30_091c_e7cb_4204,
0x2577_b875_de12_0fd2_aae1_1877_3ddd_4e4d,
0xbdf2_fdea_13ee_21fd_8ec5_14ce_4736_aa07,
0x3bcf_1cf1_605d_a5e7_26a4_12bd_8cef_4f15,
0x6ea6_f4fb_2ca4_d856_1bdc_e26b_d9af_059f,
0xb119_8a96_21b2_37f4_ea5f_4ade_5acc_0516,
0x6c87_686b_2878_2362_69ab_7ebc_0765_0565,
0x5158_703d_9536_de86_3e65_5f89_5a18_8a1c,
0xb312_6faf_bea7_5501_f394_f688_2a11_4d65,
0x80d3_3358_5254_7580_3173_cfa2_be5b_d4d3,
0xc5af_c4f4_4d5a_b019_434d_20d2_ca00_ae71,
0x7aff_7035_ddcd_e586_3ba2_97f7_3d33_8c93,
0xc338_837c_9531_20b2_099b_a1b0_205a_5ea5,
0x7f8b_4b71_5fc6_eee8_c49f_050b_5e1c_5653,
0x76d1_cd96_2b7c_0005_e14e_ec50_a9c6_90e8,
0xad3d_b13d_420b_8915_2571_cc79_f4ce_0169,
0xe5a6_0762_8406_1351_de0f_98d6_002f_4323,
0x7f61_ddc8_b19d_e688_0682_220b_02e5_c3e8,
0x8648_ca9b_e569_6f33_cb90_0d3a_6b38_c39d,
0x469d_c25e_1b32_d323_2462_0fbf_09d5_0d66,
0x4f52_9fa2_8957_8425_0f40_a9b2_781a_119d,
0x82d5_50f6_a40a_3d66_83c6_980d_f0d0_4932,
0x8e79_1844_cfb8_7476_ab6f_9af7_20cb_5df4,
0xb229_ab8b_b605_4dad_1c90_6974_166e_e8d4,
0x50a0_b7e3_c796_ad7e_9c1b_a3db_0784_ebda,
0x186c_0c4a_7a5d_68d1_81a1_9098_d16a_a929,
0x7483_01e9_e571_a670_fce5_6173_c63c_cefd,
0x2119_955c_d577_ee40_43cb_7aa2_0c62_09c2,
0x6c57_c138_0ffb_21fb_7e96_e2ae_8692_4bab,
0xadd6_07ff_5aaa_f995_0186_0725_034b_0fef,
0xd41e_c439_c73a_3e0f_f74d_3690_66ec_4e96,
0x3ee3_43c1_d983_7a9e_1ae9_962c_6e0d_1232,
0x9770_7414_bf74_3321_5d66_fa46_5ccf_c560,
0xe6a8_ec45_3ed6_7917_e9c1_3ae1_fc36_afaa,
0x0384_5f08_49e1_83df_caec_4035_fb84_0be4,
0xccd5_f9e7_ce7e_601f_839d_28ad_afad_0f8f,
0xe2c0_4ba3_4842_32d8_e470_3b6e_3042_2003,
0x5d9b_925a_3e6a_f022_1e2f_d5b2_827d_5e43,
0xa852_b770_63b9_e148_96f1_e8d8_b94b_d960,
0x279d_2c0c_53ec_aac6_90f2_075c_3f43_960c,
0x39f0_827a_4f81_1c72_c48e_0774_c4f9_134f,
0x3b06_4b86_1451_7b48_f17e_5f6a_2cb0_00c7,
0xdb19_bcf0_00dd_394a_6248_409b_f55a_4925,
0xa63d_ddb6_17c5_9634_967b_d94e_b305_05cc,
0xece8_3ffa_46fd_173a_e91e_8985_3f9e_844f,
0x01c4_d4d3_9c11_557f_b841_038e_2419_3f08,
0xa618_dd21_a5f6_b67f_46f3_b25c_ae82_a6cc,
0x8356_bdf4_4056_3fb0_3e97_e042_449e_3ed5,
0xf35a_d55d_7273_51a1_868a_166a_f46d_cbd2,
0xa3a0_c83e_c173_d41c_f71b_e788_b3fd_1a7a,
0xa8b2_fe93_fc5d_dd19_cb6d_6541_0533_cc37,
0x984f_d612_fa39_36bd_7e30_d705_59ef_aedc,
0x71c7_e142_bb02_9d2a_32db_0f5c_a181_59ce,
0x759f_8a94_60c6_34a6_97a9_116e_8742_28c5,
0x6fa2_ca2c_a3bd_eb90_85ee_68ee_3a17_5297,
0xea5f_0228_fc31_4b97_076a_1417_0b40_9e2a,
0xc40c_265d_97e7_63c0_bad4_9d47_dc95_855b,
0x201d_68d0_d89f_0e31_6361_87d9_4ded_991e,
0x1b76_9456_c778_79cf_962e_5097_1f09_cfab,
0xa8ba_af8b_31da_09a5_8f16_c910_d677_6589,
0x06a7_9ac4_14c9_632e_7e3d_e4bf_bef5_566f,
];
$t(PROMOTED_MASKS[usize::from(square)])
}
#[inline]
fn zobrist_for_pocket(color: Color, role: Role, pieces: u8) -> $t {
#[allow(overflowing_literals)]
static POCKET_MASKS: ByColor<ByRole<[$proxy; 7]>> = ByColor {
black: ByRole {
pawn: [
0x6e21_a47d_5b56_1a1d_b262_e9f9_d612_3320,
0x4263_a757_e414_fe44_9153_3947_cdaa_8bec,
0x93c4_3f67_cf55_b53f_a13b_56b4_5723_a3d4,
0xa897_32f3_39d3_5eec_9a35_cce2_9ca3_ac75,
0x5df4_ac25_c29f_bebf_2716_940e_1d4f_28d7,
0x6205_9230_cedc_d78f_7447_209c_fb79_3066,
0x9b0f_7261_932d_2c8e_5cf9_1d8a_e640_2e1a,
],
knight: [
0xfc0f_99f0_0e0c_c0e7_4625_588d_3848_7ac5,
0xcba8_a5a0_2c35_1aa5_e42e_c619_1353_e3bd,
0x77a6_c01b_d017_4d69_478e_6cc8_f6b2_dada,
0xc200_e526_4100_e463_1726_fc94_8b99_4b87,
0x3f34_0a89_f525_effe_fb9d_2e5a_66b4_6741,
0xf748_b2be_597b_2f7a_7f66_8e40_1ffe_9e6f,
0xf7b2_eddf_7b88_38c2_ee4d_6fe1_1c46_a236,
],
bishop: [
0xbdec_7e9f_4317_a678_006c_b700_6425_9959,
0x5e02_2239_fdf2_0b36_3353_5a7c_4def_1b24,
0xfdd9_2fa0_5b03_b629_479e_792f_8171_fc29,
0x80cd_ab95_a899_27dc_656a_6e71_de97_0975,
0x92cb_516b_8eba_4a30_cada_3e48_618a_1c2b,
0xac95_0f8b_ce3a_f2d9_b37a_d726_2db9_c99e,
0x9a43_060d_3aaa_e01a_85ae_2540_2a31_1d5d,
],
rook: [
0xf12b_2f60_12f9_333c_3de4_e82d_52db_b44c,
0x8ae9_143e_ce61_584a_b1c8_4996_7446_4c21,
0x676f_7093_0e72_993c_f1c1_853c_c682_7b84,
0x25e0_f5f0_1447_6a1f_51f9_7ed3_ba00_4fb0,
0x1e33_827f_042d_e978_00da_9ede_878e_3e98,
0xdd15_8e4a_7838_524d_3cd0_fd65_8e1c_db12,
0x2b75_316d_fa1b_15e2_ac29_40b6_88a1_d0f9,
],
queen: [
0x0283_b57f_325e_a495_e51a_cb5b_336d_b0df,
0x146e_60f5_6ab9_1765_cf75_17fb_dcb1_6174,
0xf50d_2497_f8b1_2819_dfe9_01ab_a4a2_ced3,
0x7600_c53f_3c60_308b_24bf_d4b7_2c88_52eb,
0xb752_08a6_056d_c7e9_f085_bcd9_7118_83d4,
0xe5f0_eb83_c20e_921b_41b7_1908_a3d8_6274,
0x7529_d0a0_c95f_08ed_6d60_4cc0_a2df_1a69,
],
king: [
0x33c7_b70e_e04a_511c_aedf_8291_e004_8c39,
0x727a_256d_ad06_cc11_09d3_c83f_5954_7935,
0x1b26_058e_1ba7_3008_257d_5c7e_bc71_8242,
0x09c4_8fc7_e167_f3b0_56ac_1c99_8f5c_2ede,
0x954f_57cd_f607_6cd4_a25c_0b06_7993_7316,
0x32fa_cc37_b50d_925e_a9a2_a7e2_00fa_a936,
0x2596_9816_8b89_f941_b8e7_ca47_16cf_9d49,
],
},
white: ByRole {
pawn: [
0xb447_9bfb_3575_d3fc_9b25_3f89_247c_4c1d,
0xe69d_2038_0ad4_5ef5_1e70_1e2a_73f9_dc4b,
0x0ea7_2e45_5dfb_08e6_cdf3_51b2_89aa_5a84,
0x7f83_4fab_7161_3f89_2e4e_118f_c45f_dc0d,
0x0bef_7b04_290f_a4d3_8024_7d70_885a_d5ce,
0x425d_9a92_61ab_b5b9_0a99_dccf_ce31_6ca0,
0x231b_fd9d_fb70_f61e_b555_3435_dae7_6840,
],
knight: [
0xf2ce_79a6_9837_967f_ee56_2004_d5d1_4158,
0xf901_2eb6_947f_5b8c_551b_5fa3_ec71_66a2,
0xe867_f9c7_0350_3bf1_2dbb_493c_6e9f_ec06,
0xee98_c901_0d1d_3cbc_f06b_4c65_f4bb_14a1,
0x95fc_0aa1_2223_89e8_5f0b_44d9_8013_acb9,
0xbf75_33eb_b6c9_9102_ce7d_bafa_734b_ba8a,
0xbc41_5372_0b7d_8489_e009_c0e3_55a7_7913,
],
bishop: [
0xe892_965f_4753_afa0_2191_8f47_3cb6_decf,
0xeaec_3e07_7478_1d2e_dcf1_1e80_dc14_763f,
0x00b6_98a9_c339_0404_7ac2_1357_500f_b0c6,
0x84c9_4d9a_3d13_f9b5_28ab_e0a3_761e_326c,
0xe4a9_10d5_16e8_0a37_30b8_e3da_17d3_4c6e,
0x30a9_9425_bba7_3df4_d999_d38f_fa5d_771e,
0x1fe9_2363_cf09_9b7e_8a7e_0d13_67d7_0b28,
],
rook: [
0x3fce_173a_5e42_7cb2_9157_bfe7_ac07_1796,
0x3cf0_44d0_bd7b_fb26_adda_94b2_1edd_779a,
0x14dd_9fdf_d382_638a_6f55_5cf7_856f_0d63,
0xa4ec_5d64_1160_68be_5b2a_5b27_88ad_c947,
0x970d_0225_c315_5df4_500c_782c_8c56_2a42,
0x96bb_58fa_f0fd_1692_20f8_b3f7_059d_8884,
0x183f_9136_b816_0b83_79c8_90ed_3e95_f3f4,
],
queen: [
0x85c1_79d2_2cce_92b9_e64d_bd47_4ddc_f8ca,
0xd355_d775_2b44_05ff_a949_66fb_f7f2_70d5,
0xda7b_7aa3_7223_0d64_2473_b4e6_ad9f_aa9a,
0x8218_ddc4_550f_6260_98ab_df9f_a4b4_87e6,
0x090f_2692_c727_e1a1_75fa_1ecb_0717_029a,
0xce74_c18e_0f75_f7f8_f605_3757_646a_08ba,
0x0750_81d9_944c_f832_060e_2788_d998_13aa,
],
king: [
0x90fb_3433_62ef_172d_5fa6_1c63_681e_bbc8,
0xac07_cd32_cdd4_a6c5_90bb_f42d_b708_006a,
0x3684_e6c1_eaf9_e5f5_b525_460e_c1c1_5916,
0x0f51_5afc_1356_a5ca_2696_070a_4502_024d,
0x282b_bc7b_2209_e436_1580_8744_2731_df68,
0xc017_2402_afbb_cbc5_6501_0c3e_a0ac_fdcf,
0x34e3_45bf_a3c4_7ceb_b28e_cdf3_05a7_a831,
],
},
};
let masks = POCKET_MASKS.get(color).get(role);
let n = <$proxy>::from(pieces);
$t(((n & 1) * masks[0])
^ (((n >> 1) & 1) * masks[1])
^ (((n >> 2) & 1) * masks[2])
^ (((n >> 3) & 1) * masks[3])
^ (((n >> 4) & 1) * masks[4])
^ (((n >> 5) & 1) * masks[5])
^ (((n >> 6) & 1) * masks[6]))
}
}
#[cfg(feature = "nohash-hasher")]
impl nohash_hasher::IsEnabled for $t {}
};
}
zobrist_value_impl! { Zobrist8, u8, 8 }
zobrist_value_impl! { Zobrist16, u16, 16 }
zobrist_value_impl! { Zobrist32, u32, 32 }
zobrist_value_impl! { Zobrist64, u64, 64 }
zobrist_value_impl! { Zobrist128, u128, 128 }
impl Hash for Zobrist128 {
fn hash<H>(&self, state: &mut H)
where
H: Hasher,
{
state.write_u64(self.0 as u64); }
}
impl Hash for Zobrist64 {
fn hash<H>(&self, state: &mut H)
where
H: Hasher,
{
state.write_u64(self.0);
}
}
impl Hash for Zobrist32 {
fn hash<H>(&self, state: &mut H)
where
H: Hasher,
{
state.write_u32(self.0);
}
}
impl Hash for Zobrist16 {
fn hash<H>(&self, state: &mut H)
where
H: Hasher,
{
state.write_u16(self.0);
}
}
impl Hash for Zobrist8 {
fn hash<H>(&self, state: &mut H)
where
H: Hasher,
{
state.write_u8(self.0);
}
}
impl From<Zobrist128> for Zobrist64 {
fn from(value: Zobrist128) -> Zobrist64 {
Zobrist64(value.0 as u64)
}
}
impl From<Zobrist128> for Zobrist32 {
fn from(value: Zobrist128) -> Zobrist32 {
Zobrist32(value.0 as u32)
}
}
impl From<Zobrist128> for Zobrist16 {
fn from(value: Zobrist128) -> Zobrist16 {
Zobrist16(value.0 as u16)
}
}
impl From<Zobrist128> for Zobrist8 {
fn from(value: Zobrist128) -> Zobrist8 {
Zobrist8(value.0 as u8)
}
}
impl From<Zobrist64> for Zobrist32 {
fn from(value: Zobrist64) -> Zobrist32 {
Zobrist32(value.0 as u32)
}
}
impl From<Zobrist64> for Zobrist16 {
fn from(value: Zobrist64) -> Zobrist16 {
Zobrist16(value.0 as u16)
}
}
impl From<Zobrist64> for Zobrist8 {
fn from(value: Zobrist64) -> Zobrist8 {
Zobrist8(value.0 as u8)
}
}
impl From<Zobrist32> for Zobrist16 {
fn from(value: Zobrist32) -> Zobrist16 {
Zobrist16(value.0 as u16)
}
}
impl From<Zobrist32> for Zobrist8 {
fn from(value: Zobrist32) -> Zobrist8 {
Zobrist8(value.0 as u8)
}
}
impl From<Zobrist16> for Zobrist8 {
fn from(value: Zobrist16) -> Zobrist8 {
Zobrist8(value.0 as u8)
}
}
pub trait ZobristHash {
fn zobrist_hash<V: ZobristValue>(&self, mode: EnPassantMode) -> V;
}
impl<P: Position> ZobristHash for P {
fn zobrist_hash<V: ZobristValue>(&self, mode: EnPassantMode) -> V {
let mut zobrist = hash_board(self.board());
for sq in self.promoted() {
zobrist ^= V::zobrist_for_promoted(sq);
}
if let Some(pockets) = self.pockets() {
for (color, pocket) in pockets.as_ref().zip_color() {
for role in Role::ALL {
zobrist ^= V::zobrist_for_pocket(color, role, *pocket.get(role));
}
}
}
if self.turn() == Color::White {
zobrist ^= V::zobrist_for_white_turn();
}
let castles = self.castles();
for color in Color::ALL {
for side in CastlingSide::ALL {
if castles.has(color, side) {
zobrist ^= V::zobrist_for_castling_right(color, side);
}
}
}
if let Some(sq) = self.ep_square(mode) {
zobrist ^= V::zobrist_for_en_passant_file(sq.file());
}
if let Some(remaining_checks) = self.remaining_checks() {
for (color, remaining) in remaining_checks.as_ref().zip_color() {
zobrist ^= V::zobrist_for_remaining_checks(color, *remaining);
}
}
zobrist
}
}
fn hash_board<V: ZobristValue>(board: &Board) -> V {
let mut zobrist = V::default();
for role in Role::ALL {
for color in [Color::Black, Color::White] {
let piece = role.of(color);
for sq in board.by_piece(piece) {
zobrist ^= V::zobrist_for_piece(sq, piece);
}
}
}
zobrist
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{fen::Fen, CastlingMode, Chess};
#[test]
fn test_polyglot() {
let reference_values = [
(
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
Zobrist64(0x463b96181691fc9c),
),
(
"rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1",
Zobrist64(0x823c9b50fd114196),
),
(
"rnbqkbnr/ppp1pppp/8/3p4/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2",
Zobrist64(0x0756b94461c50fb0),
),
(
"rnbqkbnr/ppp1pppp/8/3pP3/8/8/PPPP1PPP/RNBQKBNR b KQkq - 0 2",
Zobrist64(0x662fafb965db29d4),
),
(
"rnbqkbnr/ppp1p1pp/8/3pPp2/8/8/PPPP1PPP/RNBQKBNR w KQkq f6 0 3",
Zobrist64(0x22a48b5a8e47ff78),
),
(
"rnbqkbnr/ppp1p1pp/8/3pPp2/8/8/PPPPKPPP/RNBQ1BNR b kq - 1 3",
Zobrist64(0x652a607ca3f242c1),
),
(
"rnbq1bnr/ppp1pkpp/8/3pPp2/8/8/PPPPKPPP/RNBQ1BNR w - - 2 4",
Zobrist64(0x00fdd303c946bdd9),
),
(
"rnbqkbnr/p1pppppp/8/8/PpP4P/8/1P1PPPP1/RNBQKBNR b KQkq c3 0 3",
Zobrist64(0x3c8123ea7b067637),
),
(
"rnbqkbnr/p1pppppp/8/8/P6P/R1p5/1P1PPPP1/1NBQKBNR b Kkq - 1 4",
Zobrist64(0x5c3f9b829b279560),
),
];
for (fen, expected) in reference_values {
let pos: Chess = fen
.parse::<Fen>()
.expect("valid fen")
.into_position(CastlingMode::Standard)
.expect("legal position");
assert_eq!(
pos.zobrist_hash::<Zobrist64>(EnPassantMode::Legal),
expected,
"{}",
fen
);
}
}
#[cfg(feature = "variant")]
#[test]
fn test_variants_not_distinguished() {
let chess: Zobrist128 = Chess::default().zobrist_hash(EnPassantMode::Legal);
let crazyhouse = crate::variant::Crazyhouse::default().zobrist_hash(EnPassantMode::Legal);
let three_check = crate::variant::ThreeCheck::default().zobrist_hash(EnPassantMode::Legal);
let king_of_the_hill =
crate::variant::KingOfTheHill::default().zobrist_hash(EnPassantMode::Legal);
assert_eq!(chess, crazyhouse);
assert_eq!(chess, three_check);
assert_eq!(chess, king_of_the_hill);
}
#[test]
fn test_full_pockets() {
for color in Color::ALL {
assert_ne!(
Zobrist64::zobrist_for_pocket(color, Role::Pawn, 16),
Zobrist64::zobrist_for_pocket(color, Role::Pawn, 15)
);
assert_ne!(
Zobrist64::zobrist_for_pocket(color, Role::Queen, 2),
Zobrist64::zobrist_for_pocket(color, Role::Queen, 1)
);
}
}
#[cfg(feature = "nohash-hasher")]
#[test]
fn test_nohash_hasher() {
let mut hasher = nohash_hasher::NoHashHasher::<Zobrist128>::default();
Zobrist128(128).hash(&mut hasher);
assert_eq!(hasher.finish(), 128);
let mut hasher = nohash_hasher::NoHashHasher::<Zobrist64>::default();
Zobrist64(64).hash(&mut hasher);
assert_eq!(hasher.finish(), 64);
let mut hasher = nohash_hasher::NoHashHasher::<Zobrist32>::default();
Zobrist32(32).hash(&mut hasher);
assert_eq!(hasher.finish(), 32);
let mut hasher = nohash_hasher::NoHashHasher::<Zobrist16>::default();
Zobrist16(16).hash(&mut hasher);
assert_eq!(hasher.finish(), 16);
let mut hasher = nohash_hasher::NoHashHasher::<Zobrist8>::default();
Zobrist8(8).hash(&mut hasher);
assert_eq!(hasher.finish(), 8);
}
}