***1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 e6***


7.Bc4
=====
e6 , <=0.00d37(00,Be7)



7.Qf3
=====
Houdini 5 , d11-d36 , 7.Qf3 multipv=4 
(0 means : not among the best 4 moves)
   0, 9, 0,21,22,28,16, 8,11,17,
   0,18, 6,18,10, 0,13, 0, 0, 0,
   0, 0, 0, 0, 0, 0

Komodo 10.2 , d11-d31 7.Qf3 multipv=4
   0, 0, 0,23,18, 0,18,17,18, 0,
   0, 0,14, 0,13,15,16,13,12,15,
  15




7.Qd2
=====
Houdini d11-d36
  0, 0, 0, 0, 0, 0, 0, 2, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0,23, 9,18,

Komodo 10.2 ,d11-d31
  19, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0,12,10, 0, 0,
   0


7.f3
=====

6.Be3,e6,f3=+0.14d30(b5,a3)+0.06d31=+0.00d32(b5,Qd2,Bb7,000,Nbd7,a3,h5)
  =+0.00d33(b5,Qd2,Nbd7,000,Bb7,a3,h5)
  =+0.00d41(b5,Qd2,Nbd7,000,Bb7,*g4,h6,a3,Rc8,h4,d5)
6.Be3,e6,f3,Nbd7,a3,b5 =+0.00d34(g4,Nb6,Qd2,Nfd7)  
6.Be3,e6,f3,Nbd7,a3 =+0.00d35(b5,g4,Nb6,Qd2,Nfd7)  
6.Be3,e6,f3,Nbd7 =+0.52d30(g4) =+0.18d32(g4,h6)
6.Be3,e6,f3,b5,g4,h6,a3,Bb7,Qd2,d5 = 0.00d40


1.e4,c5,2.Nf3,d6,3.d4,cxd4,4.Nxd4,Nf6,5.Nc3,a6,
6.Be3,e6,7.f3,b5,8.a3,Bb7,9.Qd2,Nbd7,10.g4,h6,
11.000,Rc8,12.h4,d5=0.00d


Houdini 5: d11-d36  7.f3
  26,15, 8, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0,18,-12,0,15, 0,17,25,
  25,15, 0,10, 6, 0,

Komodo 10.2 d11-d31  7.f3
  26,14,14, 0, 0,12, 0,14,14,14,
   7, 0, 0,10, 0, 0,11,13, 9, 0,
   0


d25:0.02b5,0.12h6
d26:0.12b5,0.15h6
d27:0.22b5,      ,0.27Be7
d28:0.12b5,0.25h6
d29:0.00b5,0.25h6      b5,a3,Bb7,Qd2,Nbd7,000,d5
d30:0.16b5,0.31h6      b5,a3,Bb7,Qd2,Nbd7,000,Rc8
d31:0.11b5,0.22h6      b5,a3,Bb7,Qd2,Nbd7,000,Rc8
d32:0.00b5,0.19h6      b5,a3,Bb7,Qd2,Nbd7,000,Rc8,Kb1,d5
d33:0.00b5,0.31h6      b5,a3,Bb7,Qd2,Nbd7,000,d5   
d34:0.10b5,0.31h6      b5,Qd2,Nbd7,000,Bb7,a3,Rc8,Kb1,h6
d35:0.11b5,0.22d5      b5,a3,Nbd7,g4,Nb6,Qd2,Bb7,g5,Nfd7,000,Rc8,Kb1,d5
d36:0.00b5,0.27h6      b5,a3,Bb7,Qd2,Nbd7,000,Rc8,Kb1,d5
d37:0.00b5,0.18h6      b5,a3,Bb7,Qd2,Nbd7,000,Rc8,Kb1,d5
d38:0.00b5,0.36h6      b5,a3,h5,Qd2,Bb7,000,Nbd7,Be2,Be7,h3,h4
d39:0.00b5,  0.34Qc7   b5,a3,h5,Qd2,Bb7,000,Nbd7,Be2,Be7,h3,h4  
d40:0.00b5,            b5,Qd2,Nbd7,000,Bb7,g4,h6,a3,Rc8,h4,d5
d41:         0.24h5
d42:0.00b5,  0.33h5    b5,Qd2,Nbd7,000,Bb7,Kb1,Rc8,g4,Nb6,Nb3
d43:0.00b5,            b5,Qd2,Nbd7,000,Bb7,Kb1,h5,a4



6.f3
=====
d39:0.09e5t,0.16e6(a3,b5,h4),0.19h6,
d40:0.22e5t,0.00e6(a3,b5,h4,Qc7,Be3),0.21Nbd7,
d41:0.00e5t,0.00e6,0.13h6,0.31Nc6
d42:       ,0.00e6(a3,b5,g4,h6)
d43:       ,0.21e6(a3,b5,Be3,Bb7,Qd2,


d42:=0.00(e6,a3,b5)

6.f3,e6: d44:=+0.03(a3,b5,g4,h6,Rg1,d5)
         d45:=+0.12(a3,b5,g4,h6,Rg1,d5)
         d46:=+0.10(a3,b5,g4,h6,Rg1,d5)

6.f3,e6,g4=0.00d39(h6,h4,d5) <=0.07d43(h6)
          =0.15d43(h6,Be3,b5)
          =0.23d45(h6,Be3,b5)
          =0.22d46(h6,Be3,b5)

6.f3,e6   sf8
04a3,06a3,-01g4,17a3,09a3,...,....,04a3, ~+0.20 d29-d32(a3)
  0.15d32(a3,Nc6,Be3,d5,ed5)
  0.16d33(a3,Nc6)
  0.14d37(a3,b5,g4,h6,Rg1,d5)



7.Be2
=====

1.e4,c5,2.Nf3,d6,3.d4,cxd4,4.Nxd4,Nf6,5.Nc3,a6,6.Be3,e6,
7.Be2,Be7,8.O-O,O-O,9.f4 = +0.00d26(e5)9.Kh1 =-0.10d27(Qc7)

1.e4,c5,2.Nf3,d6,3.d4,cxd4,4.Nxd4,Nf6,5.Nc3,a6,6.Be3,e6,
7.Be2,Be7,8.O-O,O-O,9.f4 = +0.00d26(e5)
9.Kh1,Nc6,10.f4,Qc7 =0.03d33(Qe1,Nd4,Bd4,b5,Qg3,Bb7,a3,Bc6,Rae1,Rad8,
Bd3,Qb7,Qh3,h6) =0.00d35

1.e4,c5,2.Nf3,d6,3.d4,cxd4,4.Nxd4,Nf6,5.Nc3,a6,
6.Be3,e6,7.Be2,Be7,8.Qd2=+0.18d33


Houdini 5 , 7.Be2 ,d11-d36
  26, 8, 1,16, 2,18, 0,42,46, 6,
  11,17,11,15,23, 5,10,20,20,20,
  30,23,34,32,26,20,

komodo 10.2 , 7.Be2 ,d11-d31
  45,38,29,24,18,22,25,17,25,13,
  16,23,19,13,13,19,14,14,22,21,
  22



multipv
========

1.e4,c5,2.Nf3,d6,3.d4,cxd4,4.Nxd4,Nf6,5.Nc3,a6,6.Be3,e6
170117
  d29  Be2=0.14,a3=0.14,Qf3=0.18,f3=0.12
  d30  Be2=0.22,a3=0.16,Qf3=0.30,g3=0.00
  d31  Be2=0.16,a3=0.08,Qf3=0.13,g3=0.00
  d32  Be2=0.20,a3=0.29,Qf3=0.04,g3=0.00
  d33  Be2=0.12,a3=0.09,Qf3=0.00,g3=0.xx
  d33  Be2=0.16,a3=0.09,Qf3=0.00,g3=0.xx
  d35  Be2=0.xx,a3=0.xx,Qf3=0.00,g3=0.xx
  d40  Be2=0.02,a3=0.22,Qf3=0.00,f3=0.03

170122
  d31  Be2=0.20,a3=0.06,Qd2=0.00,f3=0.00  all with f3
  d32  Be2=0.08,a3=0.14,Qd2=0.00,f3=0.00  all with f3
  d33  Be2=0.05,a3=0.16,Qd2=0.00,f3=0.00
  d34  Be2=0.08,a3=0.16,Qd2=0.00,Qf3=0.00
  d35  Be2=0.09,a3=0.16,Qd2=0.00,Qf3=0.00
  d36  Be2=0.06,a3=0.18,Qd2=0.xx,Qf3=0.xx
  d35  Be2=0.18(Nbd7,a4),         a3=0.06,           Qf3=0.22(Bd7,Qg3), Qd2=0.00
  d36  Be2=0.09(Be7,f4,00,Qd3),   a3=0.25(b5,g4),    Qf3=0.05(Nbd7,Bd3),Qd2=0.00(b5,f3)
  d37  Be2=0.10(Nbd7,a4),         a3=0.12(Be7,Qe2),  Qf3=0.00(Nbd7,a4), Qd2=0.00(b5,f3)
  d38  Be2=0.20(Nbd7,a4),         a3=0.09(Be7,Qe2),  a4=0.00(Be7,g3),   Qf3=0.00(Nbd7,a4)
  d39  Be2=0.20(Be7,f4),          a3=0.16(Be7,Qe2),  a4=0.02(Nc6,g3),   Qd2=+0.06(b5,f3)
  d40  Be2=0.20(Be7,f4,00,g4),    a3=0.08(Be7,f3),   a4=0.02(Nc6,g3),   Qd2=+0.06(b5,f3)
  d42  Be2=0.14(Be7,Qd2,00,f3,d5),a3=0.18(Be7,g4,d5),f3=0.00(b5),       Qd2=+0.00(b5,f3)
  d43  Be2=0.15(Be7,Qd2,00,f3,d5),a3=0.12(Be7,f3,00),Qf3=0.00(b5),      Qd2=+0.00(b5,f3)
  d44  Be2=0.19(Be7,g4)          ,a3=0.18(Be7,g4,d5),Qf3=0.00(b5),      Qd2=+0.00(b5,f3)
  d45  Be2=0.10(Be7,f4)          ,a3=0.23(h6,Be2)   ,Qf3=0.00(Nbd7)     Qd2=0.00(b5,f3)
  d46  Be2=0.08(Be7,f4)          ,a3=0.24(h6,Be2)   
  d47                            ,a3=0.30(h6,Bc4)


  d46  a3=+0.16 (Be7,f3,00,Be2,b5,Qd2,d5)
  d47  a3=+0.14 (Be7,f3,00,Be2,b5,Qd2,d5)
  d48  a3=+0.17 (Be7,f3,00,Qd2,d5)
  d49  a3=+0.13 (Be7,f3,00,Qd2,d5)
  d50  a3=+0.21 (Be7,f3,00,Qd2,d5,e5,Nfd7,f4)
  d51  a3=+0.19 (Be7,f3,00,Qd2,d5,e5,Nfd7,f4,Nc6)
  d52  a3=+0.19 (Be7,Qe2,e5,Nf5)


sf8
  +0.22d24(a3),+0.16d25(a3),+0.21d26(a3),???,+0.12d28(a3),+0.15d29(a3),+0.19d30(a3)
17qf3,42qf3,20qf3,41a3,20a3
29qf3,41qf3,42qf3,37a3,26a3
20a3,21a3,27qf3,32qf3,20a3
23qf3,...20a3,18a3,29a3
26a3,21a3,28a3,18qf3,16qf3
27qf3,29a3,14a3,23a3,21a3
29a3,30a3,28qf3,25qf3,...,     22a3
20a3,24a3,18qf3,18qf3,11qf3    14a3
33qf3,25qf3,19qf3,28qf3,30qf3  23a3
35a3,28qf3,24a3,25a3,29a3      29a3






7.a3
====

1.e4,c5,2.Nf3,d6,3.d4,cxd4,4.Nxd4,Nf6,5.Nc3,a6,6.Be3,e6,7.a3
d27:0.17Be7,0.30Nc6,0.36b5,0.41h6
d28:0.16Be7,0.27Nc6,0.43b5,0.47h6
d29:0.20Be7,0.38Nc6,0.43b5,0.23h6
d30:0.14Be7,        0.33b5
d31:0.23Be7,0.41Nc6,0.37b5,0.25h6
d32:0.17Be7,
d33:                0.21b5,0.20h6
d34:0.11Be7,              ,0.31h6,0.12Nbd7
d35:0.20Be7,0.38Nc6,0.15b5,0.23h6 
d36:0.16Be7,0.26Nc6,0.15b5,0.19h6
d37:0.12Be7,0.33Nc6,0.25b5,0.20h6   b5,g4,Bb7,Bg2
d38:0.16Be7,0.29Nc6,0.35b5,0.20h6   b5,g4,Bb7,Bg2,d5
d39:0.14Be7,0.29Nc6,0.35b5,0.20h6   b5,g4,Bb7,Bg2,d5
d40:       ,0.29Nc6,      ,0.38h6
d41:0.13Be7,0.36Nc6,0.24b5,      ,0.28Nbd7
d42:0.16Be7,       ,0.35b5,0.33h6,0.27Nbd7,   Be7,Qe2,b5
d43:0.25Be7,       ,0.25b5,0.33h6,0.33Nbd7,   Be7,g4,d5
d44:0.16Be7,0.35Nc6,0.14b5,      ,0.27Nbd7,   Be7,Qe2,e5   b5,g4,Bb7,Bg2,h6,f4
d45:0.18Be7,       ,0.26b5,      ,0.25Nbd7,0.27e5   Be7,Qe2,e5   
d46:0.17Be7,                                  Be7,g4,d5


d46:+0.16(Be7,f3,00,Be2,b5,Qd2,d5)
d47:+0.14(Be7,f3,00,Be2,b5,Qd2,d5)
d48:+0.17(Be7,f3,00,Qd2,d5)
d49:+0.13(Be7,f3,00,Qd2,d5)




Houdini 5 , d11-d36 7.a3:
   0, 0, 2,23,23,28,15, 0, 0, 0,
   0,36, 8,21,18,33,33,37,28,26,
  35,40,28,26,50,23,30,

Komodo 10.2 , d11-d31  7.a3
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0,17,
  17,



========================================


6.Be3,e6, =+0.06d30(a3)  =+0.
6.Be3,e6, <+0.20d42(a3)
6.Be3,e6, =+0.18d45(a3,Be7,f3,d5,e5,Nfd7,f4)


7.a3 (after e4,c5,Nf3,d6,d4,cd4,Nd4,Nf6,Nc3,a6,Be3,e6)
 "prevents" b5 because of 8.g4 (e5,Nf5,g6,Bd2), while
7.g4 directly is not good because of e5=-0.34d31)
7.f3 (what was good after e5,Nb3) doesn't give much
with e6 : b5,a3,Bb7,Qd2,Nbd7,g4,h6,000,Rc8,h4,d5




at CCRL, 2016/08/18

      2,Bc4
    238,Bd3
    897,Be2
     94,Qd2
     85,Qf3
     75,a4
   3228,f3
     69,f4
    743,g4

at FCP
      3,Bd3
     34,Be2
     25,Qd2
      2,Qf3
      1,a4
     64,f3
     14,g4

ccrl17a , 6032+395+317+10
      3,7.Bc4
    249,7.Bd3
   1336,7.Be2
    111,7.Qd2
      2,7.Qe2
     95,7.Qf3
     87,7.a4
   3948,7.f3
     93,7.f4
    829,7.g4
      1,7.h3

6.Be3:  all, >2800
     20,1,6...Nbd
    581,118,6...Nc6
   1432,319,6...Ng4
      2,0,6...b5
      2,1,6...b6
   7793,1663,6...e5
   6032,1089,6...e6
     42,4,6...g6
      4,2,6...h5


e4,c5,Nf3,d6,d4,cd4,Nd4,Nf6,Nc3,a6,Be3
Fernschach CD 2017
     27,Bc4
    109,Bd3
   1003,Be2
      4,Bg5
      6,Nb3
      1,Nf5
    207,Qd2
      1,Qe2
     90,Qf3
     18,a3
     27,a4
   4602,f3
    100,f4
      3,g3
    746,g4
      6,h3
      1,h4




Computer games with 7.a3 :

[Event "MAD1"]
[Site "Werner"]
[Date "2011.10.31"]
[Round "23"]
[White "Frenzee 3.5.19 x64"]
[Black "Spike 1.2 Turin"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2200"]
[BlackElo "2200"]
[PlyCount "94"]
[EventDate "2011.??.??"]
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 
6.Be3 e6 7.a3 Be7 8.Be2 O-O 9.O-O Bd7 10.f4 Nc6 
11.Nb3 Qb8 12.g4 Be8 13.Bd3 Nd7 14.Qf3 Nc5 15.Nxc5 dxc5 
16.e5 Nd4 17.Qh3 g6 18.Ne4 Bc6 19.Rad1 Rd8 20.Nf6+ Bxf6

[Event "40 Zuege in 8 min"]
[Site "Werner"]
[Date "2012.11.04"]
[Round "24.1"]
[White "Chiron 1.5 x64 1CPU"]
[Black "Gull II beta2 x64 1CPU"]
[Result "1-0"]
[PlyCount "55"]
[EventDate "2012.??.??"]
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 
6.Be3 e6 7.a3 Be7 8.Qf3 Nbd7 9.Be2 O-O 10.O-O-O Qc7 
11.g4 d5 12.exd5 Ne5 13.Qg3 Bd6 14.dxe6 Nd3+ 15.Bxd3 Bxg3 
16.hxg3 fxe6 17.g5 h6 18.gxf6 Rxf6 19.Rh5 Rf8 20.f4 Qf7

[Event "Naum46_1cpu_haswell"]
[Site "Johan"]
[Date "2014.09.29"]
[Round "41"]
[White "Naum 4.6 x64 1CPU"]
[Black "Senpai 1.0 x64 1CPU"]
[Result "0.5-0.5"]
[ECO "B42"]
[WhiteElo "2840"]
[BlackElo "2844"]
[PlyCount "187"]
[EventDate "2014.??.??"]
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 d6 
6.Be3 b5 7.a3 Nf6 8.Bd3 Bb7 9.O-O Nbd7 10.f4 Rc8 
11.f5 e5 12.Nb3 Be7 13.Qf3 O-O 14.Rad1 Rxc3 15.bxc3 d5 
16.exd5 Qc7 17.Qg3 Nxd5 18.Rde1 Rc8 19.Be4 N7f6 20.Bxd5 Nxd5

[Event "40 Zuege in 8 min"]
[Site "Werner"]
[Date "2016.05.27"]
[Round "52.1"]
[White "Stockfish 7.0 x64 4CPU"]
[Black "Komodo 10 x64 4CPU"]
[Result "0.5-0.5"]
[ECO "B80"]
[PlyCount "225"]
[EventDate "2016.??.??"]
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 
6.Be3 a6 7.a3 b5 8.g4 Bb7 9.Bg2 Nc6 10.g5 Nd7 
11.f4 h6 12.h4 hxg5 13.hxg5 Rxh1+ 14.Bxh1 g6 15.Qe2 Na5 
16.f5 Qe7 17.f6 Qd8 18.O-O-O Nc4 19.Bf2 Rc8 20.e5 Bxh1


corr.games

7.a3,b5,g4,Bb7,Bg2,h5,g5,Ng4,Bc1,Qb6,h3,Ne5,f4,Nec6,Nxc6,Nxc6,Qd3
  <=+21d27 (Rc8) =0.58d27(Rc8) =0.25d29(Qc7,Be3,Be7,h4,b4) =0.25d33


7.a3,b5,g4,Bb7,Bg2,Nfd7 >=0.24d39



komodo
a2a4 ,  +3 ,   0,   0,   0,   0,  30,  24,   0,  33,  24,   0,   0,  13,  18,  15,  19,   0,  13,  15,  11,  10,  11,  11,   9,  11,   8,  11,   0,   0,   0,  11,   0
f1d3 ,  +2 ,   0,   0,   0,   0,  58,  52,  44,  42,  40,  35,  36,  42,  29,  20,   0,  19,  18,   0,   0,  15,  12,  13,  13,  14,  13,  11,   0,   0,   8,   0,  10
---------------------------------------------------------------------------------------------------------------------------------------------------------------------
      28-30    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30




Houdini 5 evaluates positions too high, where the black king
hides behind a white pawn, so, e.g. g4,h4,g5,h5,g6,gxh7 and Kh8
white is a pawn up, but the black king is rather safe and the
pawn will be captured later




6.Be3,e6,f3,b5,g4,h6,a3,Bb7,Qd2,d5 = 0.00d40
6.Be3,e6,f3,b5,a3,Bb7,Qd2,Nbd7,g4,h6,000,Rc8,h4,d5=0.00d
6.Be3,e6,f3,b5 = 0.00d42  (Qd2,Nbd7,000,Bb7,Kb1,h5,a4)

6.f3,e6 =0.21d42(a3,b5,Be3,Bb7,Qd2,
6.f3,e6 =0.10d46 (a3,b5,g4,h6,Rg1,d5)
6.f3,e6,g4 =0.23d45(h6,Be3,b5)


discrepancies:
#6.f3,e6,g4,h6,Be3,b5 =0.23d42
#6.Be3,e6,f3,b5,g4,h6 =0.00d44 (a3,Bb7,Qd2,d5)

#6.f3,e6,a3,b5,Be3 =0.21d40(Bb7,Qd2,Nbd7,000,h5) multipv=4 on 6.a3
#6.Be3,e6,f3,b5 = 0.00d42  (Qd2,Nbd7,000,Bb7,Kb1,h5,a4)


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6.a3
====

d29: 23e5,29e6             e5,Nb3,Be6,Be3,Be7,f3,Nbd7,Qd2,Qc7,000,00,g4,Nc5
d30:      19e6
d31: 16e5,19e6