Author: Andrew Williams
Date: 10:30:40 11/13/01
Go up one level in this thread
On November 13, 2001 at 12:00:47, Michel Langeveld wrote:
>How long does your program need to see that Nxf1 is deadly lost:
>
>[D] 2r3k1/1b3p2/p4q2/2bp1NpQ/Pr6/3BP2P/3n1PPB/1R3RK1 b - - 0 30
Mine requires 144 seconds to switch away from Nxf1 on my Athlon 1200.
1> -277 0 6 1... Nxf1
SCRUBBING TT: -477 [-9] -77
1= 46 0 192 1... Nxf1 2. Rxb4 Bxb4
2> 46 0 211 1... Nxf1 2. Rxb4 Bxb4
2= 46 0 291 1... Nxf1 2. Rxb4 Bxb4
3> 46 0 420 1... Nxf1 2. Rxb4 Bxb4 3. Kxf1
3= 46 0 1433 1... Nxf1 2. Rxb4 Bxb4 3. Kxf1
4> 46 0 2419 1... Nxf1 2. Rxb4 Bxb4 3. Kxf1
4= 77 0 6139 1... Nxf1 2. Rxb4 Bxb4 3. Kxf1 Rc1
5> 36 0 14947 1... Nxf1 2. Kxf1 Rxb1 3. Bxb1 Re8 4. Kg1
5= 52 0 17888 1... Nxf1 2. Kxf1 Rxb1 3. Bxb1 Bc6 4. Bc2
6> 52 0 25849 1... Nxf1 2. Rxf1 Rxa4 3. Bg3
6= 63 0 38890 1... Nxf1 2. Rxf1 Rxa4 3. Rb1 Bc6
7> -9 1 180441 1... Nxf1 2. Rxb4 Bxb4 3. Be5 Ng3 4. Bxg3 Rc1
5. Kh2 Kf8
7= 7 1 208733 1... Nxf1 2. Rxb4 Bxb4 3. Be5 Ng3 4. Bxg3 Rc1
5. Kh2 Be7
8> 0 2 375745 1... Nxf1 2. Be5 Rxb1 3. Bxb1 Ng3 4. Bxg3 Re8
5. Bd3
8= 6 2 384350 1... Nxf1 2. Be5 Rxb1 3. Bxb1 Ng3 4. Bxg3 Re8
5. Bd3
9> -1 6 867970 1... Nxf1 2. Be5 Rxb1 3. Bxb1 Ng3 4. Bxg3 Bxe3
5. Nh6 Kg7 6. Ng4
9= 3 6 929020 1... Nxf1 2. Be5 Rxb1 3. Bxb1 Ng3 4. Bxg3 Rc6
5. Bc2 Re6
10> 3 8 1328193 1... Nxf1 2. Be5 Rxb1 3. Bxb1 Ng3 4. Bxg3 Kf8
5. h4 gxh4 6. Bxh4 Qg6
10= 52 16 2521524 1... Nxf1 2. Rxb4 Bxb4 3. Be5 Rc1 4. Bxf1 Qxe5
5. Qxg5 Kf8 6. Qd8 Qe8 7. Qb6 Qxa4 8. Qxb7
SCRUBBING TT (on new guess): -148 [-193] 252
11> -193 144 22784632 1... Rc6 2. Rxb4 Bxb4 3. Rd1 Ne4 4. Bxe4 dxe4
5. Nd4 Qg6 6. Qxg6 Rxg6
11= -164 168 26996055 1... Rc6 2. Rxb4 Bxb4 3. Rd1 Ne4 4. Qg4 Rc3
5. Bf4 Bc8 6. Bxe4 dxe4
NODES per second 159100
NODES: ab: 11249784 q: 17401992 tot: 28651776
TT PERFORMANCE
probes: 38382988 hits: 5852676 cutoffs: 3541582 secondary:
381205 entries: 7485881 replacements: 1136315 too far: 12962 (1%)
probes: 133% hits: 15% cutoffs: 60% secondary: 6%
NULL MOVE: attempts: 5869438 cutoffs: 5268235 (89%)
CUTOFFS: first move: 2915766 later: 241786 (92%)
PAWN TT: probes: 38365203 hits: 37510300 (97%)
EXTENSIONS: checks: 845684 srtc: 91544 recaptures: 118538 pushes:
3132 promotes: 0 mate: 3207 null: 0
DEPTHS: main: 37 qsearch: 37
QPRUNING: would have pruned: 0 pruned move best: 0 0.00 %
EGTB: probes: 0 hits: 0 (hit-rate: 0%)
2r3k1/1b3p2/p4q2/2bp1NpQ/Pr6/3BP2P/3n1PPB/1R3RK1 b - - acd 11; acn 28651776;
acs 180; ce -164; fmvn 1; hmvc 0; id "langeveld.epd.0001"; am; pm Rc6 ; pv 1...
Rc6 2. Rxb4 Bxb4 3. Rd1 Ne4 4. Qg4 Rc3 5. Bf4 Bc8 6. Bxe4 dxe4 ;
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