Pioneer

[fern]

Pioneer was more an expression of desires, like the new man of the comunism, than a real program, It was never done in code. It was a bunch of musings by great Botv.

[Henk]

Skipper can't find it.

Code: Select all

Depth  Value   Time(seconds)   Nodes
2101    0.5327     107.83    39653712   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 d3f4 a3d6 f4e6 d4d5 e6g5 d6e5 g7f7 d5d6 f6e4 h2h4 g5e6 e7d5 
2001    0.6675      25.55     9660721   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 d3f4 a3d6 f4e6 d4d5 e6g5 d6e5 g7f7 d5d6 f6e4 e5f4 g5e6 
1901    0.5724      18.03     7160431   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 d3f4 a3d6 f4e6 d4d5 e6g5 d6e5 g5f7 e5b8 g7f8 d5d6 
1801    0.3557      19.40     7134477   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 d3f4 g2g3 f4e6 d4d5 e6g5 d5d6 g5e4 a3b4 h7h6 
1701    0.4559       7.91     3129732   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 d3f4 g2g3 f4e6 d4d5 e6g5 d5d6 g7f8 a3c1 
1601    0.2138     107.82    38097653   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 d3f4 d4d5 f4d5 e7d5 f6d5 a3b4 d5b4 
1501    1.6041       3.17     1236751   g3f1 e7d8 f1e3 b3d2 e6e7 d8d7 e3d5 d2e4 d5f6 e4f6 d4d5 d7b5 b2c1 b5c5 c1e3 
1401    1.6863       2.40      849397   g3f1 e7d8 f1e3 b3d2 e6e7 d8d7 e3d5 d2e4 d5f6 e4f6 d4d5 d7b5 e5c7 f6d5 
1301    1.4977       4.92     1702500   g3f1 e7d8 f1e3 b3d2 e6e7 d8d7 e3d5 d2e4 d5f6 e4f6 d4d5 d7b5 e5c7 
1201    1.6309       8.64     3178534   g3f1 e7b7 b2a3 b6b5 a3f8 g7f8 e5f6 f8g8 f1e3 b7a8 f6f7 g8h8 
1101    1.4207       0.66      255423   g3f1 g7g8 g1h1 b3a5 b2a3 e7a3 e5f6 a3f8 f6f8 g8f8 f1e3 
1001    1.4256       1.33      402972   g3f1 g7g8 g1h1 b3a5 b2a3 e7a3 e5f6 a3f8 f6f8 g8f8 
901    1.2089       0.38      158451   g3f1 e7d8 f1e3 b3d2 e6e7 d8e8 e3d5 d2e4 b2c1 
801    1.1844       0.15       58064   g3f1 e7d8 f1e3 b3d2 e6e7 d8e8 e3d5 d2e4 
701    0.8717       0.09       33119   g3f1 e7d8 f1e3 b3d2 e3g4 d2e4 g4f6 
601    0.9966       0.04       17481   g3f1 e7d8 f1e3 b3d2 b2a1 b6b5 
501    1.0270       0.02        9756   g3f1 e7d8 f1e3 h7h6 e5f4 
401    1.0034       0.05       18995   g3f1 e7d8 g1h1 b6b5 
301    0.4330       0.01        1526   g1h1 b6b5 e5e1 
201    0.6089       0.00        1705   g1h1 b6b5 
101    0.6029       0.00         147   g1h1 
  1    0.8198       0.05         130   g1h1 

Still no progress. [By the way time value not correct]

Code: Select all

Depth  Value   Time(seconds)   Nodes
210    0.2060     104.74   152366291   g3e2 b3a5 e2f4 a5c6 f4d5 c6e5 d5e7 e5d3 b2a1 d3f4 e7c6 f4e6 c6a7 e6f4 a7c8 f6d5 c8d6 d5c3 d6c4 f4e2 
200    0.1992      80.74   110369920   g3e2 b3a5 e2f4 a5c6 f4d5 c6e5 d5e7 e5d3 b2a1 d3f4 e7c6 f4e6 c6a7 e6f4 a7c8 f6d5 c8d6 d5c3 d6c4 
190    0.2263      50.87    77716614   g3e2 b3a5 e2f4 a5c6 f4d5 c6e5 d5e7 e5d3 b2a3 d3f4 e7c6 f4e6 c6a7 e6f4 a7b5 f6e4 g1f1 f4d5 
180    0.2388      56.71    57578171   g3e2 b3a5 e2f4 a5c6 f4d5 c6e5 d5e7 e5d3 b2a3 d3f4 e7c6 f4e6 c6a7 e6f4 a7b5 f6e4 a3b4 
170    0.3733      18.78    35269688   g3e2 b3a5 e2f4 a5c6 f4d5 c6e5 d5e7 e5d3 b2a3 d3f4 e7c6 f4e6 c6a7 e6f4 a7b5 f4e2 
160    0.3050      13.09    27664506   g3e2 b3a5 e2f4 a5c6 f4d5 c6e5 d5e7 e5d3 b2a3 d3f4 e7c6 f4e6 c6a7 f6d5 a7b5 
150    0.3211      14.19    22603021   g3e2 b3a5 e2f4 a5c6 f4d5 c6e5 d5e7 e5d3 b2a1 d3f4 e7c6 f4e6 c6a7 f6d5 
140    1.1032       3.99    17161966   g3e2 b3a5 e2f4 a5c6 f4d5 c6e5 d5e7 e5d3 b2a1 d3c1 d4d5 f6e4 g1f1 
130    0.4009      11.53    15620537   g3e2 b3a5 e2f4 a5c6 f4d5 c6e5 d5e7 e5d3 b2a3 d3f4 e7c6 f4e6 
120    1.0636      22.09    11213474   g3e2 b6b5 e2f4 g7h6 f4d5 f6d5 e5d5 e7f6 d5e5 f6g5 e5g5 
110    0.9221       5.20     2981931   g3e2 g7h6 b2a3 e7a3 e5f6 a3d6 f6f4 d6f4 e2f4 b3d2 
100    0.7587       0.64      972440   g3e2 g7f8 b2a3 e7a3 e5f6 f8g8 f6d8 g8g7 d8d7 
 90    0.7571       1.19      718763   g3e2 g7f8 b2a3 e7a3 e5f6 f8g8 f6f7 g8h8 
 80    0.6698       0.15      334453   g3e2 e7d8 e6e7 d8d7 e2f4 g7f7 b2a3 
 70    0.6409       0.43      272174   g3e2 e7d8 e6e7 d8e8 e2f4 g7f7 
 60    0.2256       0.09      103974   g3e2 g7f8 b2a3 e7a3 e5f6 
 50    0.4516       0.16       65583   g3e2 b3d2 e2f4 e7d8 
 40   -0.1513       0.01        6023   g1h1 a7a5 g3e2 
 30    0.0166       0.01        3156   g1h1 a7a5 
 20   -0.1626       0.00         728   g1h1 
 10    0.0056       0.04         186   g1h1 

[mclane]

The program represents the first commercial implementation of the attack map / offset map move generating strategy proposed by former World Chess Champion Mikhail Botvinnik and subsequently refined by myself for faster move generation as pieces come off the board.

I want a superconny in a wooden computer.

[Henk]

No progress

Code: Select all

Depth  Value   Time(seconds)   Nodes
400    0.0000     206.27   112881363   g3f1 b3a5 b2a3 e7a3 e5c7 g7h8 c7b8 h8g7 b8c7 
380    0.0000     137.81    67675906   g3f1 b3a5 b2a3 e7a3 e5c7 g7h8 c7b8 h8g7 b8c7 
360   -0.3900      28.74    32128396   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a1 d3f4 e7c6 f4e6 c6a7 e6f4 a7c8 f6d5 c8d6 d5e3 
340   -0.4000      23.70    24153665   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a1 d3f4 e7c6 f4e6 c6a7 e6f4 a7c6 f6e4 a1b2 
320   -0.4000      10.24    15723078   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a1 d3f4 e7c6 f4e6 c6a7 f6e4 a7c6 e6f4 
300   -0.3700       9.36    12300766   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 d3f4 e7c6 f4e6 c6a7 f6d5 a3b2 
280   -0.5700       6.48     9791559   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 d3f4 e7c6 f4e6 c6a7 f6e4 
260    0.0300       2.70     7162935   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a1 d3f4 e7c6 f4e6 c6a7 
240   -0.4500       6.75     6170843   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a1 d3f4 e7c6 f4e6 
220    0.0900       4.15     3368463   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 f6e4 e7d5 
200    0.4600       2.41     1461494   g3f1 g7g8 f1e3 b3d2 e3d5 f6d5 e5d5 g8h8 b2c1 d2b3 
180   -0.5100       0.31      406218   g3e2 e7e8 e2f4 e8c6 e6e7 g7f7 b2a3 b3d2 e5g5 
160   -0.4400       0.21      263769   g3e2 e7e8 e2f4 e8c6 e6e7 g7f7 b2a3 b3d2 
140   -0.5100       0.13      161865   g3e2 g7f8 e2f4 e7d8 e5g5 f8e8 g1h1 
120   -0.6600       0.11       96949   g3e2 e7e8 e6e7 g7f7 b2a3 f7g7 
100   -0.6600       0.09       45388   g3e2 b3d2 e2f4 e7b7 e6e7 
 80   -1.1300       0.01        5838   e5e3 f6g4 e3e2 g4f6 
 60   -0.9600       0.01        2886   e5e3 f6g4 e3e2 
 40   -1.3900       0.00         718   e5e3 g7h8 
 20   -1.2500       0.00         200   g1h1 

[mclane]

More knowledge

[bob]

More knowledge

This really isn't "knowledge". It is "tactics" which the search provides...

On my MacBook, Crafty finds this in 2 seconds at depth 20. Eval goes from a draw to +6.00

[mclane]

But in 1984 super constellation could only see it with knowledge.

Kittinger and Scott McDonald in Computer Chess Digest Annual 1984 on Novag Constellation [26] :
The Novag Constellation programs represent a significant evolutionary step in the development of microcomputer chess programs. The program represents the first commercial implementation of the attack map / offset map move generating strategy proposed by former World Chess Champion Mikhail Botvinnik and subsequently refined by myself for faster move generation as pieces come off the board.

Knowledge

[bob]

But in 1984 super constellation could only see it with knowledge.

Kittinger and Scott McDonald in Computer Chess Digest Annual 1984 on Novag Constellation [26] :
The Novag Constellation programs represent a significant evolutionary step in the development of microcomputer chess programs. The program represents the first commercial implementation of the attack map / offset map move generating strategy proposed by former World Chess Champion Mikhail Botvinnik and subsequently refined by myself for faster move generation as pieces come off the board.

Knowledge

You HAVE to follow the checks/captures to see the win of material, otherwise you throw a bishop away. Many found it in the early 80's. We certainly did. There were even long discussions about it in r.g.c.c as well as some notes printed in the JICCA.

If you want to argue knowledge was used to follow the RIGHT checks and such, that's possible. But it is most definitely a purely tactical position that can be solved with pure material-only evaluation, very quickly.

[tpoppins]

If nothing else, Skipper produces neat-looking slopes in its analysis output. Probably looks great on larger phones, a bit jaggy on desktops.

Henk, have you considered incorporating an anti-aliasing function into your engine?

[Henk]

No. Wrong value

Code: Select all

Depth  Value   Time(seconds)   Nodes
320    0.0000      45.35    33675066   b2a3 e7a3 g3h5 g6h5 
300    0.0000      16.96    23698016   b2a3 e7a3 g3h5 g6h5 
280    0.0000      53.05    19722014   b2a3 e7a3 g3h5 
260   -1.0600       4.90     7925888   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 d3f4 g1f1 f4e6 e7c6 
240   -0.9500      21.11     6898835   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 f6e4 e7d5 g7h8 
220   -0.4400       2.05     2462711   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 f6e4 e7d5 
200   -0.9700       3.81     2014868   g3f1 b3a5 f1e3 a5c6 e3d5 c6e5 d5e7 e5d3 b2a3 f6e4 
180   -1.1100       3.84     1249683   g3f1 e7d8 e6e7 d8d7 f1e3 g7f7 b2a3 b3d2 e5b8 
160   -1.0300       1.30      465667   g3f1 e7d8 e6e7 d8c8 f1e3 g7f7 b2a3 c8e6 
140   -0.9900       0.48      215156   g3f1 g7f8 e5b8 e7e8 
120   -1.2900       0.37      114551   g3f1 e7d8 f1e3 g7f8 g1h1 b3d2 
100   -1.5800       0.14       36856   g3f1 e7e8 f1e3 e8c6 g1h1 
 80   -1.7900       0.01        4104   e5e1 e7f8 g1h1 g7h8 
 60   -1.5300       0.01        2217   e5e1 e7f8 g1h1 
 40   -2.0100       0.01        1025   e5e1 g7h8 
 20   -1.8100       0.04         304   g1h1