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Subject: Re: Test position Can you guys please try & understand?

Author: chandler yergin

Date: 18:15:45 01/17/05

Go up one level in this thread


New game,
[D]8/8/5k1p/2b5/P6p/8/4K3/8 w - - 0 1

Analysis by Fritz 7:

1.Kf3 h3 2.Kg3 Bg1 3.Kxh3 Kg7 4.Kg2 Kf8 5.Kh1
  =  (0.00)   Depth: 9/13   00:00:02  122kN
1.Kf3 h3 2.Kg3 Bb6 3.Kxh3 Bd8 4.Kg2 Ba5 5.Kh1 h5 6.Kh2
  =  (-0.22)   Depth: 10/14   00:00:03  218kN
1.Kf3 Ke5 2.Kg2 Kf4 3.Kh1 Kg3 4.a5 Ba7 5.a6 Kg4 6.Kh2
  =  (-0.22)   Depth: 11/16   00:00:06  475kN
1.Kf3 Ke5 2.Kg2 Kf4 3.Kh1 Kg3 4.a5 Ba7 5.a6 Kg4 6.Kh2 h3 7.Kh1
  =  (-0.22)   Depth: 12/18   00:00:07  794kN, tb=1
1.Kf3 Ke5 2.Kg2 Kf4 3.Kh1 Kg3 4.a5 Ba7 5.a6 Kg4 6.Kh2 h5 7.Kh1
  =  (-0.22)   Depth: 13/19   00:00:08  1503kN, tb=2
1.Kf3 Ke5 2.Kg2 Kf4 3.Kh1 Kg3 4.a5 Ba7 5.a6 Kg4 6.Kh2 Kh5 7.Kh1 h3 8.Kh2
  =  (-0.22)   Depth: 14/20   00:00:09  2277kN, tb=5
1.Kf3 Ke5 2.Kg2 Kf4 3.Kh1 Kg3 4.a5 Ba7 5.a6 Kg4 6.Kh2 Kh5 7.Kh1 h3 8.Kh2
  =  (-0.22)   Depth: 15/22   00:00:10  3495kN, tb=11
1.Kf3 Ke5 2.Kg2 Kf4 3.Kh1 Kg3 4.a5 Ba7 5.a6 Kg4 6.Kh2 Kh5 7.Kh1 Kg6 8.Kh2
  =  (-0.22)   Depth: 16/23   00:00:13  5728kN, tb=32
1.Kf3 Ke5 2.a5 Kd5 3.Kg2
  =  (-0.22)   Depth: 17/26   00:00:23  10298kN, tb=147
1.Kf3 Ke5 2.a5 Kd5 3.Kg2 Kd6 4.Kh1 Bf2 5.Kh2 Be3 6.Kh1
  =  (-0.22)   Depth: 18/28   00:00:31  14771kN, tb=388
1.Kf3--
  ³  (-0.50)   Depth: 19/28   00:00:40  20374kN, tb=768
1.Kf3
  ³  (-0.50)   Depth: 19/31   00:00:42  21335kN, tb=877
1.Kf3 Kg5 2.a5 Bf8 3.a6 Bc5 4.Kg2 Kg4 5.Kh1 Kf3 6.Kh2
  ³  (-0.28)   Depth: 20/32   00:00:54  27474kN, tb=1684
1.Kf3--
  ³  (-0.56)   Depth: 21/30   00:01:00  31781kN, tb=2186
1.Kf3 Kg5 2.a5 Bd6 3.a6 Bb8 4.Kg2 Kg4 5.Kf2 Kh3 6.Kg1 Kg3 7.Kh1
  -+  (-1.87)   Depth: 21/38   00:01:34  59556kN, tb=4182
1.Kf3--
  -+  (-2.16)   Depth: 22/29   00:01:45  67265kN, tb=4852
1.Kf3 Kg5 2.a5 Bd6 3.a6 Bb8 4.Kg2 Kg4 5.Kf2 Kh3 6.Kg1 Kg3 7.Kh1
  -+  (-4.37)   Depth: 22/42   00:13:33  822286kN, tb=48925
1.Kf3 Ke5 2.Kg4 Bf2 3.a5 Kd5 4.Kh3 Bg3 5.Kg2
  -+  (-4.37)   Depth: 23/41   00:15:59  882429kN, tb=62642
1.Kf3--
  -+  (-4.66)   Depth: 24/41   00:17:01  904928kN, tb=72531

(,  17.01.2005)

The longer it runs.. the deeper the Hole.

You don't think this is a Programming problem?

It should be acceptable?

New game,
8/8/5k1p/2b5/P6p/8/4K3/8 w - - 0 1

Analysis by Crafty 19.01:

1.Kf3 Bg1
  =  (0.00)   Depth: 1/2   00:00:00
1.Kf3 Bg1 2.Kg4
  =  (0.00)   Depth: 3/3   00:00:00
1.Kf3 Bg1 2.Kg4
  =  (0.00)   Depth: 3/3   00:00:00
1.Kf3 Bg1 2.Kg4 Bf2
  =  (0.00)   Depth: 4/4   00:00:00
1.Kf3 Bg1 2.Kg4 Bf2 3.Kh5
  =  (0.00)   Depth: 5/6   00:00:00
1.Kf3 Bg1 2.Kg4 Bf2 3.Kf4 h3
  =  (0.00)   Depth: 6/7   00:00:00  7kN, tb=20
1.Kf3 Bg1 2.Kg4 Bf2 3.Kf4 h3 4.Ke4
  =  (0.00)   Depth: 7/9   00:00:00  20kN, tb=20
1.Kf3 Bg1 2.Kg4 Bf2 3.Kf4 h3 4.Kf3 h2
  =  (0.00)   Depth: 8/11   00:00:01  54kN, tb=144
1.Kf3 Bg1 2.Kg4 Bf2 3.Kf4 h3 4.Kf3 h2 5.Kg2
  =  (0.00)   Depth: 9/12   00:00:01  121kN, tb=148
1.Kf3 Bg1 2.Kg4 Bf2 3.Kf4 h3 4.Kf3 h2 5.Kg2 Kf5
  =  (0.00)   Depth: 10/14   00:00:03  263kN, tb=1198
1.Kf3 Bg1 2.Kg4 Bf2 3.Kf4 h3 4.Kf3 h2 5.Kg2 Kf5 6.Kxh2
  =  (0.00)   Depth: 11/15   00:00:03  512kN, tb=1367
1.Kf3 Bg1 2.Kg4 Bf2 3.Kf4 h3 4.Kf3 h2 5.Kg2 Kf5 6.Kxh2 Be1
  =  (0.00)   Depth: 12/16   00:00:06  994kN, tb=4166
1.Kf3 Bg1 2.Kg4 Bf2 3.Kf4 h3 4.Kf3 h2 5.Kg2 Kf5 6.Kxh2 Be1 7.Kh3
  =  (0.00)   Depth: 13/18   00:00:07  1807kN, tb=4895
1.Kf3 Bg1 2.Kg4 Bf2 3.Kf4 h3 4.Kf3 h2 5.Kg2 Kf5 6.Kxh2 Be1 7.Kh3 Kf4
  =  (0.00)   Depth: 14/19   00:00:13  3260kN, tb=11625
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 15/21   00:00:19  5951kN, tb=14663
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 16/23   00:00:33  9778kN, tb=26373
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 17/24   00:00:40  14013kN, tb=28902
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 18/26   00:00:59  19469kN, tb=42875
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 19/28   00:01:21  26642kN, tb=48825
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 20/29   00:02:01  35635kN, tb=72860
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 21/31   00:02:38  48310kN, tb=92749
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 22/33   00:04:19  68528kN, tb=157560
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 23/34   00:06:30  103536kN, tb=222182
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 24/36   00:13:16  188493kN, tb=428758
1.Kf3 h3 2.a5 Ke5 3.a6 h2 4.Kg2 Kf4 5.Kxh2 Kf3 6.Kh3 Bg1 7.a7 Bxa7
  =  (-0.01)   Depth: 25/39   00:26:49  550024kN, tb=711610

(,  17.01.2005)

Congrats Robert, Crafty doesn't have the BUG!


New game,
[D]r2qk2r/ppp1b1pp/2n1p3/3pP1n1/3P2b1/2PB1NN1/PP4PP/R1BQK2R w - - 0 1

Analysis by Shredder 8:

1. ± (0.79): 1.h3 Bxf3 2.gxf3 Nf7 3.f4 g6 4.Be3 Kd7 5.Kd2 Bh4 6.Ne2 Qe7 7.Qb3
Raf8 8.Raf1 Kc8
2. ² (0.37): 1.h4 Nxf3+ 2.gxf3 Bxh4 3.fxg4 Bxg3+ 4.Kd2 Bh4 5.Kc2 Kd7 6.Qe2 Qe7
7.g5 Bxg5 8.Bxg5 Qxg5 9.Rag1 Qe7
3. ² (0.56): 1.Qe2 Kd7 2.h3 Bxf3 3.gxf3 Nf7 4.Kd1 g6 5.Kc2 Bh4 6.Qg2 Qe7 7.Bf4
Raf8 8.Rag1 Kc8 9.Kb1
4. ² (0.45): 1.Be3 Rf8 2.Be2 Nxf3+ 3.gxf3 Bh3 4.Qd3 g6 5.Kd2 Bg2 6.Rhg1 Bxf3
5. ² (0.39): 1.Rf1 Kd7 2.Be3 Nxf3+ 3.gxf3 Bh3 4.Rf2 Kc8 5.Kd2 Na5 6.Qa4 c5 7.Rd1
Qc7 8.Ne2 cxd4 9.cxd4 Bh4

(,  17.01.2005)

In this position, the Program has determined there are 43 Possible moves for
White.

It is a "Non-Forcing" Position, therefore, the ‘weighted' Static Positional
Programmed Values come into play.
These are based on Mobility, Space, King Safety, Pawn Position, strong & weak
Squares etc..
These ‘weighted' values are shown after the Decimal Point.
The Significant Digit is the 1st one! It shows 0.xx telling you it is a Balanced
position, with no material advantage  for either side.

From these 43 possible moves, the Program will search each move in turn, one Ply
deeper each iteration.
Using Multiple Lines... we get a peek into what the Program is seeing, and how
it evaluates what it considers to be the ‘Best" 5 moves, based on the weighted
static positional values.


It has searched all 43 moves to about 15 Ply almost immediately.
As it goes one Ply deeper, in turn for all 43 moves.. the search depth, for the
most promising moves.. i.e, the first 5 goes as deep as 40 Ply.
With each iteration, searching all 43 moves to 16 ply, 17ply, 18 ply etc..
It searches the most promising moves a bit deeper also.

After searching all 43 moves to a depth of 19 Ply, and the most promising moves
to 46 ply, it still has not found any Material advantage for either side.

Now.. At the beginning, we can set how many plys we want to see, for these 5 or
4 or 3 most promising Lines.  Eight or Nine moves deep  for each Line is
reasonable, and that's what we show.  Our Choice.

Each Engine will evaluate the weighted "Static Positional Values" differently,
depending on how they are programmed.

Crafty, may put more emphasis on Pawn Structure, while another may consider,
King Safety more important.
More aggressive programs like Fritz may rate ‘Space" as being more important,
and show a 0.85 or higher...

What is so hard to understand here?





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