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Subject: The Canadian Master verse CM8000 --> some analysis

Author: Dann Corbit

Date: 17:57:43 07/31/01


These are analysis of the forward positions (hence the better the score for
white, the worse the move that black made).

This move [the one played by CM] clearly loses:
[D]r1r3k1/pp3p1p/3pbp1Q/4p3/4P3/3R1N2/1PPK1PPP/7q w - - acd 21; acn 2068985989;
acs 36002; ce 519; pv Ne1 Qxh2 Qxh2 Kf8 Qh6+ Ke7 Rf3 a5 Qxf6+ Ke8 Qh8+ Ke7 Qxh7
b5 Qh4+ Kd7 Rd3 Bc4 Qf6 Bxd3 Qxf7+ Kc6 Qd5+ Kd7 Nxd3 b4;

This move probably loses:
[D]r1r3k1/pp3p1p/3pbp1Q/q3p3/4P3/3R1N2/1PPK1PPP/7R w - - acd 16; acn 567177259;
acs 8002; ce 32; pv c3 Kh8 Qxf6+ Kg8 Qg5+ Kf8 Nd4 Bd7 Nf5 Bxf5 Qxf5 Qb6 Rb1 Rc4
Ke1 Qc6 Rd5 Kg8;
{especially when we look at the log for the analysis:
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
threshold set to 9 pawns.
5 piece tablebase files found
19045kb of RAM used for TB indices and decompression tables

Crafty v18.10

White(1): hash 100M
hash table memory = 96M bytes.
White(1): st 8000
search time set to 8000.00.
White(1): epdpfga 3probs.epd 3probs.out
PFGA: EPD record: 1
middle-game phase
              clearing hash tables
              time surplus   0.00  time limit 133:20 (133:20)
         nss  depth   time  score   variation (1)
                7     0.31  -2.86   1. c3 Qa2 2. Qxf6 Qxb2+ 3. Ke3 Rxc3
                                    4. Qg5+ Kf8 5. Rd1
                7     0.70     ++   1. Kd1!!
                7     0.93  -2.41   1. Kd1 Qa1+ 2. Qc1 Qa4 3. Nd2 Rc6 4.
                                    Rg3+ Kh8 5. Re1
                7->   0.97  -2.41   1. Kd1 Qa1+ 2. Qc1 Qa4 3. Nd2 Rc6 4.
                                    Rg3+ Kh8 5. Re1
                8     3.67  -2.16   1. Kd1 Bg4 2. Re1 Qa4 3. b3 Qc6 4.
                                    c4 b5 5. Qxf6
                8->   3.79  -2.16   1. Kd1 Bg4 2. Re1 Qa4 3. b3 Qc6 4.
                                    c4 b5 5. Qxf6
                9     8.73  -2.36   1. Kd1 Qa1+ 2. Qc1 Qa4 3. Nd2 Rc5 4.
                                    Rxd6 Rac8 5. Ke1 Rxc2
                9    11.05  -2.31   1. c3 Qb6 2. Ne1 Qxb2+ 3. Nc2 Kh8 4.
                                    Qxf6+ Kg8 5. Qg5+ Kf8 6. Qh6+ Ke8 7.
                                    Qxh7 Bb3
                9->  11.38  -2.31   1. c3 Qb6 2. Ne1 Qxb2+ 3. Nc2 Kh8 4.
                                    Qxf6+ Kg8 5. Qg5+ Kf8 6. Qh6+ Ke8 7.
                                    Qxh7 Bb3
               10    21.42     ++   1. c3!!
               10    37.32  -0.77   1. c3 Qb6 2. Nd4 Bg4 3. Rg3 Qxb2+ 4.
                                    Nc2 f5 5. exf5 <HT>
               10->  37.68  -0.77   1. c3 Qb6 2. Nd4 Bg4 3. Rg3 Qxb2+ 4.
                                    Nc2 f5 5. exf5 <HT>
               11    57.25     ++   1. c3!!
               11     1:49   0.34   1. c3 Bg4 2. h3 Bf5 3. exf5 e4 4. Rxd6
                                    Qc5 5. Rd4 Qxf5 6. Nh4 Qxf2+
               11->   1:49   0.34   1. c3 Bg4 2. h3 Bf5 3. exf5 e4 4. Rxd6
                                    Qc5 5. Rd4 Qxf5 6. Nh4 Qxf2+
               12     4:18   0.27   1. c3 Kh8 2. Ne1 Qb6 3. Qxf6+ Kg8 4.
                                    Rg3+ Kf8 5. Nd3 Bc4 6. Ke1 Rd8 7. b4
                                    Qb5 8. Ke2
               12->   4:49   0.27   1. c3 Kh8 2. Ne1 Qb6 3. Qxf6+ Kg8 4.
                                    Rg3+ Kf8 5. Nd3 Bc4 6. Ke1 Rd8 7. b4
                                    Qb5 8. Ke2
               13     6:37   0.30   1. c3 Kh8 2. Qxf6+ Kg8 3. Qg5+ Kf8
                                    4. Nd4 Qa2 5. Nxe6+ Qxe6 6. Qf5 Qxf5
                                    7. exf5 Ke7 8. Rh3 Rg8 9. Rg1 Rh8
               13->   7:28   0.30   1. c3 Kh8 2. Qxf6+ Kg8 3. Qg5+ Kf8
                                    4. Nd4 Qa2 5. Nxe6+ Qxe6 6. Qf5 Qxf5
                                    7. exf5 Ke7 8. Rh3 Rg8 9. Rg1 Rh8
               14    14:07   0.32   1. c3 Kh8 2. Qxf6+ Kg8 3. Qg5+ Kf8
                                    4. Nd4 Bd7 5. Nf5 Bxf5 6. Qxf5 Qb6
                                    7. Rb1 Rc4 8. Ke1 Qc6 9. Rd5 Kg8
               14->  15:35   0.32   1. c3 Kh8 2. Qxf6+ Kg8 3. Qg5+ Kf8
                                    4. Nd4 Bd7 5. Nf5 Bxf5 6. Qxf5 Qb6
                                    7. Rb1 Rc4 8. Ke1 Qc6 9. Rd5 Kg8
               15    35:25     ++   1. c3!!
               15->  42:30   0.71   1. c3 Kh8 2. Qxf6+ Kg8 3. Qg5+ Kf8
                                    4. Nd4 Bd7 5. Nf5 Bxf5 6. Qxf5 Qb6
                                    7. Rb1 Rc4 8. Ke1 Qc6 9. Rd5 Kg8
               16   119:11     ++   1. c3!!
              time=133:20  cpu=100%  mat=-1  n=567177259  fh=7%  nps=70k
              ext-> chk=299695385 cap=12232734 pp=1112979 1rep=32200803
mate=2259462
              predicted=0  nodes=567177259  evals=931559396
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=2%  pawn=1%  used=99%

draw:
[D]r1r3k1/pp3p1p/3pbp1Q/4p3/4P3/3R1N2/1qPK1PPP/7R w - - acd 17; acn 441024764;
acs 8001; ce 0; pv Ne1 Qb4+ c3 Qxe4 Rg3+ Bg4 f3 Qd5+ Ke2 f5 fxg4 f4 Rh3 Qa2+ Kf1
Qc4+ Kf2 Qa2+ Kg1 Qb1 Kf2 Qa2+;

draw:
[D]r5k1/pp3p1p/3pbp1Q/4p3/4P3/3R1N2/1PrK1PPP/q6R w - - acd 18; acn 686087374;
acs 8001; ce 0; pv Kxc2 Rc8+ Kd2 Qxb2+ Ke3 Rc1 Ne1 Bc4 Qxf6 Bxd3 Qg5+ Kf8 Qd8+
Kg7 Qg5+ Kf8;



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