Best versions

109 games played. each side has 5 minutes.
cpu: dual core.
pawn hash size: 128 mb again.
  Engine                               Score    
1: FireBird_101_w32 [nmv enabled]       20.5/36
2: Rybka 3 w32                          20.5/37
3: FireBird_101_w32 [nmv disabled]      18.5/36
4: Igorrit_0086v9_w32                   18.0/37
5: IvanHoe-Beta-999965-Beta [optimised] 17.5/36
6: IvanHoe-Beta-999965-Beta             14.0/36

-----------------FireBird_101_w32 [nmv disabled]-----------------
FireBird_101_w32 [nmv disabled] - FireBird_101_w32 [nmv enabled]       : 2.5/8 0-3-5  31%  -139
FireBird_101_w32 [nmv disabled] - Igorrit_0086v9_w32                   : 3.5/7 1-1-5  50%    ±0
FireBird_101_w32 [nmv disabled] - IvanHoe-Beta-999965-Beta             : 4.5/7 3-1-3  64%  +100
FireBird_101_w32 [nmv disabled] - IvanHoe-Beta-999965-Beta [optimised] : 4.5/7 2-0-5  64%  +100
FireBird_101_w32 [nmv disabled] - Rybka 3 w32                          : 3.5/7 2-2-3  50%    ±0
-----------------FireBird_101_w32 [nmv enabled]-----------------
FireBird_101_w32 [nmv enabled] - FireBird_101_w32 [nmv disabled]       : 5.5/8 3-0-5  69%  +139
FireBird_101_w32 [nmv enabled] - Igorrit_0086v9_w32                    : 4.0/7 2-1-4  57%   +49
FireBird_101_w32 [nmv enabled] - IvanHoe-Beta-999965-Beta              : 3.0/7 0-1-6  43%   -49
FireBird_101_w32 [nmv enabled] - IvanHoe-Beta-999965-Beta [optimised]  : 4.0/7 2-1-4  57%   +49
FireBird_101_w32 [nmv enabled] - Rybka 3 w32                           : 4.0/7 3-2-2  57%   +49
-----------------Igorrit_0086v9_w32-----------------
Igorrit_0086v9_w32 - FireBird_101_w32 [nmv disabled]                   : 3.5/7 1-1-5  50%    ±0
Igorrit_0086v9_w32 - FireBird_101_w32 [nmv enabled]                    : 3.0/7 1-2-4  43%   -49
Igorrit_0086v9_w32 - IvanHoe-Beta-999965-Beta                          : 5.0/7 4-1-2  71%  +156
Igorrit_0086v9_w32 - IvanHoe-Beta-999965-Beta [optimised]              : 3.0/8 0-2-6  38%   -85
Igorrit_0086v9_w32 - Rybka 3 w32                                       : 3.5/8 0-1-7  44%   -42
-----------------IvanHoe-Beta-999965-Beta-----------------
IvanHoe-Beta-999965-Beta - FireBird_101_w32 [nmv disabled]             : 2.5/7 1-3-3  36%  -100
IvanHoe-Beta-999965-Beta - FireBird_101_w32 [nmv enabled]              : 4.0/7 1-0-6  57%   +49
IvanHoe-Beta-999965-Beta - Igorrit_0086v9_w32                          : 2.0/7 1-4-2  29%  -156
IvanHoe-Beta-999965-Beta - IvanHoe-Beta-999965-Beta [optimised]        : 2.5/7 1-3-3  36%  -100
IvanHoe-Beta-999965-Beta - Rybka 3 w32                                 : 3.0/8 0-2-6  38%   -85
-----------------IvanHoe-Beta-999965-Beta [optimised]-----------------
IvanHoe-Beta-999965-Beta [optimised] - FireBird_101_w32 [nmv disabled] : 2.5/7 0-2-5  36%  -100
IvanHoe-Beta-999965-Beta [optimised] - FireBird_101_w32 [nmv enabled]  : 3.0/7 1-2-4  43%   -49
IvanHoe-Beta-999965-Beta [optimised] - Igorrit_0086v9_w32              : 5.0/8 2-0-6  63%   +92
IvanHoe-Beta-999965-Beta [optimised] - IvanHoe-Beta-999965-Beta        : 4.5/7 3-1-3  64%  +100
IvanHoe-Beta-999965-Beta [optimised] - Rybka 3 w32                     : 2.5/7 2-4-1  36%  -100
-----------------Rybka 3 w32-----------------
Rybka 3 w32 - FireBird_101_w32 [nmv disabled]                          : 3.5/7 2-2-3  50%    ±0
Rybka 3 w32 - FireBird_101_w32 [nmv enabled]                           : 3.0/7 2-3-2  43%   -49
Rybka 3 w32 - Igorrit_0086v9_w32                                       : 4.5/8 1-0-7  56%   +42
Rybka 3 w32 - IvanHoe-Beta-999965-Beta                                 : 5.0/8 2-0-6  63%   +92
Rybka 3 w32 - IvanHoe-Beta-999965-Beta [optimised]                     : 4.5/7 4-2-1  64%  +100
nmv: null move verification
in InanHoe-optimised i used firebird's values.
it seems that  FireBird 1.01 is best of ippolit derivative engines.
my msvc compile: http://rapidshare.com/files/350961483/IvanHoe-Beta-999965-Beta.7z.html
good luck