Author: Dann Corbit
Date: 17:27:33 10/11/05
Go up one level in this thread
On October 11, 2005 at 20:16:38, chandler yergin wrote:
>On October 11, 2005 at 20:07:20, Dann Corbit wrote:
>
>>On October 11, 2005 at 20:02:19, chandler yergin wrote:
>>
>>>On October 11, 2005 at 19:43:16, Dann Corbit wrote:
>>>
>>>>On October 11, 2005 at 17:46:02, chandler yergin wrote:
>>>>
>>>>>I apologize if I have offended anyone.
>>>>>A case of "Apples & Oranges" again..
>>>>>Misunderstandings..
>>>>>Stephen, and a few others here, know I seldom voice "Opinions";
>>>>>I Post facts..
>>>>>That way... if someone differs from the Post, they should attack the Fact,
>>>>>not the Poster.
>>>>>It doesn't always work that way...
>>>>>Everything I have Posted about Computer Chess Programs..I gave the Link
>>>>>Everything else I have Posted about Engines, Analysis Modules, is directly
>>>>>from the Chessbase Manual. It therefore refers to the Top Commercial
>>>>>Programs only.. Fritz, & Shredder
>>>>>Many of you that Program your own Engines 'tweak' them as you desire,
>>>>>and have a lot of fun.
>>>>>Players mostly use the Top Commercial Programs to assist in their play
>>>>>and improve their expertise.
>>>>>Thanks to a recent Post by Dan H. some of the confusion has been cleared up.
>>>>>Chessbase does use Mini/Max and so does indeed search every legal move
>>>>>for every position.
>>>>
>>>>There is absolutely, postively no way on God's green earth that ChessBase is
>>>>using mini/max to search anything.
>>>
>>>Why do you say that? Fritz gets to over 15 ply almost instantly.
>>
>>Then either they are computing with Tachyons or they are not using mini/max.
>>
>>>>We would see a branching factor of around 20 and a 15 ply search would take
>>>>years to finish.
>>>
>>>Please let's settle this. Give me a FEN for any Position
>>>OK?
>>
>>[D]rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq -
>>
>>Here are the correct node counts by ply:
>>Depth Perft value Database Verified?
>>1 20 Verified OK!
>>2 400 Verified OK!
>>3 8902 Verified OK!
>>4 197281 Verified OK!
>>5 4865609 Verified OK!
>>6 119060324 Verified OK!
>>7 3195901860 Verified OK!
>>8 84998978956 Verified OK!
>>9 2439530234167 download (Access) Verified OK!
>>10 69352859712417 download (Access) Verified OK!
>>11 2097651003696806 download (Access) Not verified
>
>Well here's a real position, one Vincent's hard ones.
>2R5/8/8/8/7p/1k2q3/6P1/5Q1K b - - 0 1
>New game,
>[D]2R5/8/8/8/7p/1k2q3/6P1/5Q1K b - - 0 1
>
>Analysis by Fritz 5.32:
>
>1...h3--
> +- (6.22) Depth: 1/2 00:00:00
>1...Qg3!
> +- (5.69) Depth: 1/7 00:00:00
>1...Qg3!
> +- (5.69) Depth: 1/7 00:00:00
>1...Qg3--
> +- (6.12) Depth: 2/7 00:00:00
>1...Qg3 2.Qb1+ Ka4 3.Ra8#
> +- (#2) Depth: 2/7 00:00:00
>1...Kb2!
> +- (15.75) Depth: 2/8 00:00:00
>1...Kb2 2.Qf6+ Ka2 3.Qxh4
> +- (6.12) Depth: 2/9 00:00:00 1kN
>1...Ka2!
> +- (6.09) Depth: 2/9 00:00:00 1kN
>1...Qe4!
> +- (6.06) Depth: 2/9 00:00:00 2kN
>1...Qe4--
> +- (6.37) Depth: 3/9 00:00:00 3kN
>1...Qe4 2.Rb8+ Kc3
> +- (6.44) Depth: 3/11 00:00:00 4kN
>1...Ka2!
> +- (6.41) Depth: 3/11 00:00:00 8kN
>1...Kb2!
> +- (6.37) Depth: 3/11 00:00:00 10kN
>1...Kb2 2.Qb5+ Qb3 3.Qe2+
> +- (6.28) Depth: 3/11 00:00:00 11kN
>1...Kb2--
> +- (6.66) Depth: 4/13 00:00:00 15kN
>1...Kb2
> +- (6.66) Depth: 4/13 00:00:00 18kN
>1...Qe4!
> +- (6.62) Depth: 4/13 00:00:00 24kN
>1...Qe4 2.Rb8+ Kc3 3.Qc1+
> +- (6.44) Depth: 4/13 00:00:00 24kN
>1...Qe4--
> +- (6.75) Depth: 5/12 00:00:00 28kN
>1...Qe4 2.Rb8+ Kc3 3.Qc1+ Kd4 4.Rb4+ Kd5 5.Qd2+ Ke5 6.Qg5+
> +- (15.09) Depth: 5/15 00:00:00 52kN
>1...Kb2!
> +- (15.06) Depth: 5/15 00:00:00 61kN
>1...Kb2 2.Rb8+ Kc3 3.Qa1+ Kd2 4.Qa2+ Kd1 5.Rb1+ Qc1 6.Qa4+
> +- (10.56) Depth: 5/15 00:00:00 70kN
>1...Kb2 2.Rb8+ Kc2 3.Qb1+ Kd2 4.Qa2+
> +- (10.56) Depth: 6/17 00:00:00 151kN
>1...Kb2--
At depth 6, the minimax tree has 398,319,124 nodes in it -- not 151,000.
> +- (10.87) Depth: 7/19 00:00:00 180kN
>1...Kb2 2.Rb8+ Kc2 3.Qb1+ Kd2 4.Rd8+ Kc3 5.Rc8+ Kd4 6.Qd1+
> +- (15.19) Depth: 7/20 00:00:00 1003kN
>1...Kb2--
> +- (15.50) Depth: 8/22 00:00:01 1735kN
>1...Kb2 2.Qd1 Qe4 3.Qc1+ Kb3 4.Rb8+ Qb4 5.Qb1+ Kc3 6.Qxb4+
> +- (15.91) Depth: 8/22 00:00:02 4025kN
>1...Kb2--
> +- (16.22) Depth: 9/21 00:00:02 5583kN
>1...Kb2 2.Qb5+ Qb3 3.Qe5+ Kb1 4.Qe1+ Ka2 5.Qa5+ Qa3
> +- (#7) Depth: 9/24 00:00:03 9514kN
>1...Qe4!
> +- (#8) Depth: 9/24 00:00:08 24514kN
>
>(, 11.10.2005)
E:\crafty\release>Crafty-1920.exe
Initializing multiple threads.
System is SMP, not NUMA.
EPD Kit revision date: 1996.04.21
unable to open book file [./books.bin].
hash table memory = 48M bytes.
pawn hash table memory = 6M bytes.
EGTB cache memory = 32M bytes.
draw score set to 0.00 pawns.
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
resign after 5 consecutive moves with score < -9.
5 piece tablebase files found
13980kb of RAM used for TB indices and decompression tables
Crafty v19.20 (1 cpus)
White(1): new
White(1): post
White(1): setboard 2R5/8/8/8/7p/1k2q3/6P1/5Q1K b - - 0 1
puzzling over a move to ponder.
depth time score variation (1)
Black(1): Kb2 [pondering]
Hint: Kb2
clearing hash tables
time surplus 0.00 time limit 30.00 (3:30)
depth time score variation (1)
8 1.23 Mat08 2. Qd1 Qe4 3. Qc1+ Kb3 4. Rc3+ Ka4
5. Qa3+ Kb5 6. Rc5+ Kb6 7. Qa5+ Kb7
8. Rc7+ Kb8 9. Qa7#
8 32752 123 1745870 2. Qd1 Qe4 3. Qc1+ Kb3 4. Rc3+ Ka4 5. Qa3+
Kb5 6. Rc5+ Kb6 7. Qa5+ Kb7 8. Rc7+ Kb8 9. Qa7#
8-> 3.37 Mat08 2. Qd1 Qe4 3. Qc1+ Kb3 4. Rc3+ Ka4
5. Qa3+ Kb5 6. Rc5+ Kb6 7. Qa5+ Kb7
8. Rc7+ Kb8 9. Qa7#
8 32752 337 2982614 2. Qd1 Qe4 3. Qc1+ Kb3 4. Rc3+ Ka4 5. Qa3+
Kb5 6. Rc5+ Kb6 7. Qa5+ Kb7 8. Rc7+ Kb8 9. Qa7#
9 3.79 Mat08 2. Qd1 Qe4 3. Qc1+ Kb3 4. Rc3+ Ka4
5. Qa3+ Kb5 6. Rc5+ Kb6 7. Qa5+ Kb7
8. Rc7+ Kb8 9. Qa7#
9 32752 379 3261904 2. Qd1 Qe4 3. Qc1+ Kb3 4. Rc3+ Ka4 5. Qa3+
Kb5 6. Rc5+ Kb6 7. Qa5+ Kb7 8. Rc7+ Kb8 9. Qa7#
9-> 10.40 Mat08 2. Qd1 Qe4 3. Qc1+ Kb3 4. Rc3+ Ka4
5. Qa3+ Kb5 6. Rc5+ Kb6 7. Qa5+ Kb7
8. Rc7+ Kb8 9. Qa7#
9 32752 1040 9584141 2. Qd1 Qe4 3. Qc1+ Kb3 4. Rc3+ Ka4 5. Qa3+
Kb5 6. Rc5+ Kb6 7. Qa5+ Kb7 8. Rc7+ Kb8 9. Qa7#
easy 10 10.42 1/35? 2. Qd1
Black(1): easy
pondering disabled.
Black(1): setboard 2R5/8/8/8/7p/1k2q3/6P1/5Q1K b - - 0 1
Black(1): perft 1
total moves=29 time=0.00
Black(1): setboard 2R5/8/8/8/7p/1k2q3/6P1/5Q1K b - - 0 1
Black(1): perft 2
total moves=897 time=0.00
Black(1): setboard 2R5/8/8/8/7p/1k2q3/6P1/5Q1K b - - 0 1
Black(1): perft 3
total moves=19619 time=0.00
Black(1): setboard 2R5/8/8/8/7p/1k2q3/6P1/5Q1K b - - 0 1
Black(1): perft 4
total moves=613468 time=0.08
Black(1): setboard 2R5/8/8/8/7p/1k2q3/6P1/5Q1K b - - 0 1
Black(1): perft 5
total moves=12686150 time=2.25
Black(1): setboard 2R5/8/8/8/7p/1k2q3/6P1/5Q1K b - - 0 1
Black(1): perft 6
total moves=398319124 time=62.39
Black(1): setboard 2R5/8/8/8/7p/1k2q3/6P1/5Q1K b - - 0 1
Black(1): perft 7
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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