The Week in Chess

Monday, March 18, 2013

Firenzina 2.2.2 xTreme - New Chess Engine Download Update

Release notes:

All binaries of Firenzina 2.2.2 xTreme were compiled using Intel C++ 13.0 Update 3 (Feb. 6, 2013) under Microsoft Visual Studio Ultimate 2012 Update 1, except the generic 32-bit binary, which was compiled using the MSVC compiler under Microsoft Visual Studio 2010 Professional.

The older archives include libiomp5md.dll to support the /Qparallel compilation option. I turned it off for the SGVAD compiles, so they should work okay without the DLL.
A 130x65 Firenzina logo based on a fragment of a classic public domain portrait of Giovanna Tornabuoni by

Domenico Ghirlandaio is also included.
The MD compile requires Microsoft Visual C++ 2012 Redistributable Package (x64). This is a nuisance, hence the MT compile followed quickly. Non-popcnt and x32 compiles were released soon afterwards.

What's new in Firenzina compared to Fire?

VERY little. Following the advice of Jose Maria Velasco, I added new intrinsics and compiled the resulting code using the newest Intel compiler.

Why clone Fire?

  1. Because it looks like the work on Fire was abandoned prematurely.
  2. Inquiring minds want to know: Which free, open-source engine is the strongest?
  3. Anthony Garino of Stanford University suggested that I should "fork Fire" in the TCEC chat.:)
Date released: 2013/03/16
Engine name: Firenzina
Version: 2.2.2
Author: Decembrists + Norman Schmidt + Dmitri Gusev
Protocol: UCI
Windows: 32/64
Linux: Yes
Android: No
MacOS: No
Multi-processor: Yes
SSE 4.2: Yes
Popcnt: Yes
FRC Chess960: Yes
Source code: Yes
Opening book: No
Est. ELO rating: 2931-

Firenzina 2.2.2 xTreme vs. Fire 2.2 xTreme

The quick 20 rounds test between Firenzina 2.2.2 xTreme and the original Fire 2.2 xTreme resulted in a loss to Firenzina with 3 points deficit.  No improvements yet.

1Fire 2.2 xTreme 11.5/206-3-11
2Firenzina 2.2.2 xTreme8.5/20· ·· ··

20 games played / Tournament finished

Tournament start: 2013.02.23, 17:49:19
Latest update: 2013.03.18, 01:00:02
Level: Blitz 0:10/1
Hardware: AMD Phenom(tm) II X4 945 Processor 3000 MHz with 0.8 GB Memory
Operating system: Microsoft Windows XP 64 Bit Professional Service Pack 2 (Build 3790)
Table created with: Arena 3.0

Download computer chess engines tournament games here.

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