The Baron 2.23 without, and with LMR
Posted: Mon Jul 28, 2008 2:04 am
4m+1s, AthlonXP@1439 MHz
128 MB hash, ponder off
4 short predefined opening variations
4-piece tbs. (bitbases for Bright)
Fritz 8-GUI, Windows 98SE
1. without LMR (lmrmoves 0); that's the default
(all learn files were deleted between the two tests)
2. with LMR (lmrmoves 3); other lmr settings remained unchanged
The effect of LMR is more visible if depths under equal conditions are compared. Here are some examples from these games, always without LMR at first, and then with LMR:
[White "The Baron 2.23"]
[Black "Bright-0.3a"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb4+ {0.03/11 9} 5. Bd2 {-0.08/10 13} Bxd2+
{(Sc6) 0.09/13 15} 6. Qxd2 {(Sbxd2) 0.16/10 10} Ba6 {(Sc6) 0.21/13 29} 7. Nc3 {
(b3) 0.11/9 6} Bxc4 {(Sc6) -0.41/13 9} 8. Bg2 {-0.13/10 18}
[White "The Baron 2.23"]
[Black "Bright-0.3a"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb4+ {0.03/11 9} 5. Bd2 {0.04/11 16} Bxd2+ {
(Sc6) 0.09/13 15} 6. Nbxd2 {-0.04/12 10} Bb7 {(Sc6) 0.04/14 12} 7. Bg2 {
0.04/11 10} O-O {(Sc6) 0.04/13 8} 8. O-O {0.05/11 8}
[White "The Baron 2.23"]
[Black "Fruit 051103"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb4+ {-0.05/12 10} 5. Bd2 {0.07/11 12} Bxd2+
{(Sc6) 0.01/13 13} 6. Qxd2 {(Sbxd2) 0.11/10 11} Ba6 {-0.13/12 7} 7. Nc3 {
(b3) 0.09/9 9} Bxc4 {(0-0) -0.30/13 8} 8. Ne5 {(Lg2) -0.17/10 13}
[White "The Baron 2.23"]
[Black "Fruit 051103"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb4+ {-0.05/12 10} 5. Bd2 {-0.07/12 15}
Bxd2+ {(Sc6) 0.00/13 10} 6. Qxd2 {(Sbxd2) 0.13/11 9} Ba6 {(Sc6) -0.06/12 8} 7.
Nc3 {(b3) -0.06/10 5} Bxc4 {-0.34/13 9} 8. Bg2 {-0.16/10 5}
[White "The Baron 2.23"]
[Black "Nimzo 8"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 {0.13/10 11} 5. Nc3 {0.97/9 20} e5 {
(Sc6) 0.11/10 11} 6. Bb5+ {1.11/9 9} Bd7 {(Sbd7) 0.44/11 8} 7. Bxd7+ {1.28/9 5}
Qxd7 {0.23/10 7} 8. Nf5 {(Sf3) 1.07/9 7}
[White "The Baron 2.23"]
[Black "Nimzo 8"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 {0.29/10 13} 5. Nc3 {0.90/10 16} e5 {
(Sc6) 0.11/10 11} 6. Bb5+ {1.18/10 7} Bd7 {(Sbd7) 0.44/11 9} 7. Bxd7+ {
1.15/11 11} Qxd7 {0.23/10 7} 8. Nf5 {(Sf3) 0.99/11 12}
Therefore, I think it seems recommendable to activate LMR in Baron 2.23.
128 MB hash, ponder off
4 short predefined opening variations
4-piece tbs. (bitbases for Bright)
Fritz 8-GUI, Windows 98SE
1. without LMR (lmrmoves 0); that's the default
Code: Select all
The Baron 2.23 - Bright-0.3a 2.5 - 5.5 +1/-4/=3 31.25%
The Baron 2.23 - Fruit 051103 0.5 - 7.5 +0/-7/=1 6.25%
The Baron 2.23 - Nimzo 8 2.5 - 5.5 +2/-5/=1 31.25%
The Baron 2.23 - Hiarcs 9 2.5 - 5.5 +1/-4/=3 31.25%
total 8,0/32 = 25,0%
2. with LMR (lmrmoves 3); other lmr settings remained unchanged
Code: Select all
The Baron 2.23 - Bright-0.3a 2.5 - 5.5 +1/-4/=3 31.25%
The Baron 2.23 - Fruit 051103 1.5 - 6.5 +1/-6/=1 18.75%
The Baron 2.23 - Nimzo 8 4.5 - 3.5 +3/-2/=3 56.25%
The Baron 2.23 - Hiarcs 9 2.5 - 5.5 +2/-5/=1 31.25%
total 11,0/32 = 34,4%
[White "The Baron 2.23"]
[Black "Bright-0.3a"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb4+ {0.03/11 9} 5. Bd2 {-0.08/10 13} Bxd2+
{(Sc6) 0.09/13 15} 6. Qxd2 {(Sbxd2) 0.16/10 10} Ba6 {(Sc6) 0.21/13 29} 7. Nc3 {
(b3) 0.11/9 6} Bxc4 {(Sc6) -0.41/13 9} 8. Bg2 {-0.13/10 18}
[White "The Baron 2.23"]
[Black "Bright-0.3a"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb4+ {0.03/11 9} 5. Bd2 {0.04/11 16} Bxd2+ {
(Sc6) 0.09/13 15} 6. Nbxd2 {-0.04/12 10} Bb7 {(Sc6) 0.04/14 12} 7. Bg2 {
0.04/11 10} O-O {(Sc6) 0.04/13 8} 8. O-O {0.05/11 8}
[White "The Baron 2.23"]
[Black "Fruit 051103"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb4+ {-0.05/12 10} 5. Bd2 {0.07/11 12} Bxd2+
{(Sc6) 0.01/13 13} 6. Qxd2 {(Sbxd2) 0.11/10 11} Ba6 {-0.13/12 7} 7. Nc3 {
(b3) 0.09/9 9} Bxc4 {(0-0) -0.30/13 8} 8. Ne5 {(Lg2) -0.17/10 13}
[White "The Baron 2.23"]
[Black "Fruit 051103"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb4+ {-0.05/12 10} 5. Bd2 {-0.07/12 15}
Bxd2+ {(Sc6) 0.00/13 10} 6. Qxd2 {(Sbxd2) 0.13/11 9} Ba6 {(Sc6) -0.06/12 8} 7.
Nc3 {(b3) -0.06/10 5} Bxc4 {-0.34/13 9} 8. Bg2 {-0.16/10 5}
[White "The Baron 2.23"]
[Black "Nimzo 8"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 {0.13/10 11} 5. Nc3 {0.97/9 20} e5 {
(Sc6) 0.11/10 11} 6. Bb5+ {1.11/9 9} Bd7 {(Sbd7) 0.44/11 8} 7. Bxd7+ {1.28/9 5}
Qxd7 {0.23/10 7} 8. Nf5 {(Sf3) 1.07/9 7}
[White "The Baron 2.23"]
[Black "Nimzo 8"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 {0.29/10 13} 5. Nc3 {0.90/10 16} e5 {
(Sc6) 0.11/10 11} 6. Bb5+ {1.18/10 7} Bd7 {(Sbd7) 0.44/11 9} 7. Bxd7+ {
1.15/11 11} Qxd7 {0.23/10 7} 8. Nf5 {(Sf3) 0.99/11 12}
Therefore, I think it seems recommendable to activate LMR in Baron 2.23.