Author: Michel Langeveld
Date: 21:18:54 09/01/99
After e5 Krush says Lc2 seems the best.
Is Lc2 not the best (Does kasparov has better)?
Is -1.76 not enough for winning?
Or is the a winning sequence?
I'm in doubt...
I used a prety weak machine for this (Pentium II - 266 Mhz with 24Mb RAM) and
al 4 piece tablebases. I think someone in this group should easy regenerate this
moves within an hour on TODAY's fast machine. I hope someone has all 5 piece
tablebases.
search time set to 9999999.00.
hash table memory = 12M bytes.
pawn hash table memory = 1M bytes.
Crafty 16.15 vs ferret
EGTB access enabled
using tbpath=d:/tb
4 piece tablebase files found
PFGA: EPD record: 1
end-game phase
clearing hash tables
time surplus 0.00 time limit 166666:39 (166666:39)
s depth time score variation (1)
8 3.19 0.24 1. ... b2 2. Bd2 e4 3. h6 e3 4. g6
Ne7 5. g7 Bxg7 6. Bxe3
8-> 3.59 0.24 1. ... b2 2. Bd2 e4 3. h6 e3 4. g6
Ne7 5. g7 Bxg7 6. Bxe3
9 4.39 -- 1. ... b2
9 4.72 -0.20 1. ... b2 2. Bxb2 Bxb2 3. h6 Ne7 4.
Rf7 Bc1 5. Rxe7 Bxg5 6. h7 Bf6 7. Rxb7
9-> 7.33 -0.20 1. ... b2 2. Bxb2 Bxb2 3. h6 Ne7 4.
Rf7 Bc1 5. Rxe7 Bxg5 6. h7 Bf6 7. Rxb7
10 8.95 ++ 1. ... b2!!
10 32.78 0.42 1. ... b2 2. Bd2 e4 3. Rb1 e3 4. Be1
b5 5. g6 Bg7 6. Kg2 b4
10-> 33.10 0.42 1. ... b2 2. Bd2 e4 3. Rb1 e3 4. Be1
b5 5. g6 Bg7 6. Kg2 b4
11 40.73 0.12 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
Rb1 Bd4 5. g6 Ne7 6. g7 Bxg7 7. hxg7
Kc6 8. Kg2
11-> 42.57 0.12 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
Rb1 Bd4 5. g6 Ne7 6. g7 Bxg7 7. hxg7
Kc6 8. Kg2
12 1:15 0.45 1. ... b2 2. Bd2 e4 3. Bf4 e3 4. g6
e2 5. Rb1 Bc3 6. Bg3 Bg7 7. Kg2 b5
8. Be1
12-> 1:16 0.45 1. ... b2 2. Bd2 e4 3. Bf4 e3 4. g6
e2 5. Rb1 Bc3 6. Bg3 Bg7 7. Kg2 b5
8. Be1
13 2:44 0.34 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
g6 Ne7 5. g7 Bxg7 6. hxg7 b5 7. Rf7
Ng8 8. Rf8 Nh6 9. g8=Q+ Nxg8 10. Rxg8
13-> 2:53 0.34 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
g6 Ne7 5. g7 Bxg7 6. hxg7 b5 7. Rf7
Ng8 8. Rf8 Nh6 9. g8=Q+ Nxg8 10. Rxg8
14 4:30 0.13 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
g6 Ne7 5. g7 e3 6. Kg2 Bxg7 7. hxg7
Ke4 8. Rf6 Ke5 9. Rf7 Ke6
14-> 5:38 0.13 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
g6 Ne7 5. g7 e3 6. Kg2 Bxg7 7. hxg7
Ke4 8. Rf6 Ke5 9. Rf7 Ke6
15 10:55 -0.03 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
g6 Ne7 5. g7 e3 6. Rf7 Bxg7 7. Rxg7
Nf5 8. h7 Nxg7 9. h8=Q e2 10. Qh4
15-> 19:00 -0.03 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
g6 Ne7 5. g7 e3 6. Rf7 Bxg7 7. Rxg7
Nf5 8. h7 Nxg7 9. h8=Q e2 10. Qh4
16 35:07 -0.23 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
g6 Ne7 5. g7 e3 6. Rf7 Bxg7 7. Rxg7
Nf5 8. h7 Nxg7 9. h8=Q e2 10. Qg8+
Kc5 11. Qc8+ Kd4
16-> 51:12 -0.23 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
g6 Ne7 5. g7 e3 6. Rf7 Bxg7 7. Rxg7
Nf5 8. h7 Nxg7 9. h8=Q e2 10. Qg8+
Kc5 11. Qc8+ Kd4
17 58:31 -- 1. ... b2
17 121:24 -1.76 1. ... b2 2. Bxb2 Bxb2 3. h6 e4 4.
g6 e3 5. g7 Ne7 6. Kg2 Bxg7 7. hxg7
b5 8. Rf8 e2 9. Kf2 b4 10. Kxe2 b3
11. g8=Q+ Nxg8 12. Rxg8
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