New version chess engine: Yukari 2025.4.1


Yukari is a primarily xboard-protocol chess program. (UCI support exists, but xboard should be preferred if your GUI isn't from the stone age.)
Author: yukarichess

v.2025.4.1:
Fourth release.

Score of Yukari vs Cheng4.48: 246 - 151 - 603  [0.547] 1000
...      Yukari playing White: 124 - 73 - 303  [0.551] 500
...      Yukari playing Black: 122 - 78 - 300  [0.544] 500
...      White vs Black: 202 - 195 - 603  [0.503] 1000
Elo difference: 33.1 +/- 13.5, LOS: 100.0 %, DrawRatio: 60.3 %

Score of Yukari vs Patricia4: 223 - 334 - 443  [0.445] 1000
...      Yukari playing White: 114 - 156 - 230  [0.458] 500
...      Yukari playing Black: 109 - 178 - 213  [0.431] 500
...      White vs Black: 292 - 265 - 443  [0.513] 1000
Elo difference: -38.7 +/- 16.1, LOS: 0.0 %, DrawRatio: 44.3 %

Score of Yukari vs Stormphrax3: 217 - 199 - 584  [0.509] 1000
...      Yukari playing White: 116 - 91 - 293  [0.525] 500
...      Yukari playing Black: 101 - 108 - 291  [0.493] 500
...      White vs Black: 224 - 192 - 584  [0.516] 1000
Elo difference: 6.3 +/- 13.9, LOS: 81.1 %, DrawRatio: 58.4 %

Score of Yukari vs Pawnocchio1.4: 273 - 146 - 581  [0.564] 1000
...      Yukari playing White: 139 - 75 - 286  [0.564] 500
...      Yukari playing Black: 134 - 71 - 295  [0.563] 500
...      White vs Black: 210 - 209 - 581  [0.500] 1000
Elo difference: 44.4 +/- 13.9, LOS: 100.0 %, DrawRatio: 58.1 %
Estimated strength: about 3500 CCRL blitz elo.



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