How bad is it this time ?

[Henk]

[d] 1r3rk1/1b4Np/5p1R/8/2q5/5P2/2BQP1PP/6RK w - - 0 1

I count about 40 seconds and 10 million nodes. Perhaps first thing to do is counting time cumulative.

Code: Select all

280       M15   12.65    10683640   c2h7 g8h8 h7d3 h8g7 h6h7 g7g8 h7h8 g8g7 d2h6 g7f7 d3c4 f7e7 h8f8 e7f8 
260   14.9460      16.43     7522319   c2h7 g8h8 h7d3 h8g7 d3c4 f8d8 c4d3 b7d5 d3f5 d8f8 f5e4 d5e4 f3e4 
240   10.5090       7.84     3442414   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2d6 b8e8 e2e3 g7g5 c2b3 g8h8 
220   10.5220       2.26     1419595   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2d6 b8e8 e2e3 g7g5 c2b3 
200   10.5480       1.07      799048   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2f4 b8c8 c2b3 g8h8 
180   10.4990       1.54      500866   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2f4 b8c8 c2b3 
160    9.3380       0.15      151225   g7h5 f6f5 d2g5 g8f7 h6h7 f7e6 h7e7 e6d6 
140    9.3470       0.23      104108   g7h5 f6f5 d2g5 g8f7 h6h7 f7e6 h7e7 
120    7.3270       0.06       42235   h6h7 f8d8 d2c1 c4e2 c2f5 b7d5 
100    7.4300       0.03       22435   h6h7 f8d8 d2c1 c4e2 c2f5 
 80    6.1580       0.02       12301   c2h7 g8g7 g1c1 c4b3 
 60    6.0600       0.01        5081   c2h7 g8g7 h7f5 
 40    6.1160       0.00         423   c2h7 g8g7 
 20    6.1370       0.00         217   c2h7 

[flok]

Code: Select all

13:10:09 folkert@belle:~/Projects/Embla/tags/v0.9.1_2205/trunk↥ trunk(2) 17s ‡ ./Embla -B -p initial_fen='1r3rk1/1b4Np/5p1R/8/2q5/5P2/2BQP1PP/6RK w - - 0 1'
Start this program as follows to see a list of options:
./Embla -h
info string Embla v0.9.7 trunk-time-edit
info string Using 0 threads
go depth 13
info string color white
info depth 1 seldepth 3 score cp 615 time 1 nodes 53 pv h6h7
info depth 2 seldepth 7 score cp 613 time 2 nodes 395 pv h6h7 f6f5
info depth 3 seldepth 9 score cp 617 time 3 nodes 871 pv h6h7 b8d8 c2d3
info depth 4 seldepth 12 score cp 618 time 8 nodes 3353 pv c2d3 c4a4 h6h7 f6f5
info depth 5 seldepth 16 score cp 622 time 32 nodes 14594 pv c2d3 c4c6 h6h7 f8d8 e2e3
info depth 6 seldepth 20 score cp 619 time 92 nodes 40904 pv h6h7 f8d8 c2d3 c4c6 e2e3
info depth 7 seldepth 21 score cp 620 time 162 nodes 72667 pv c2d3 c4c6 g1c1 c6b6 h6h7 f8c8 e2e3 c8c1 d2c1
info depth 8 seldepth 25 score cp 623 time 548 nodes 247825 pv h6h7 f8d8 c2d3 c4c8 g7h5 c8c6 h5f4 f6f5
info depth 9 seldepth 28 score cp 625 time 1369 nodes 626739 pv h6h7 b7c8 g7f5 c8f5 c2f5 f8d8 f5d3 c4b4 d2c2
info depth 10 seldepth 30 score cp 700 time 2288 nodes 1035623 pv c2h7
info depth 10 seldepth 32 score cp 1280 time 2865 nodes 1294672 pv c2h7 g8h8 h7d3 h8g7 h6h7 g7g8 d2h6 c4g4 h7h8 g8f7 h8f8
info depth 11 seldepth 31 score cp 1282 time 3541 nodes 1604839 pv c2h7 g8h8 h7d3 h8g8 d3c4 g8g7 e2e4 f8e8 c4d5 b8d8 g1d1
info depth 12 seldepth 32 score cp 1380 time 3960 nodes 1793930 pv c2h7
info depth 12 seldepth 36 score cp 1608 time 5641 nodes 2579807 pv c2h7 g8h8 h7d3 h8g8 d3c4 g8g7 h6h4 b7d5 d2d5 f6f5 d5e5 g7g6
info depth 13 seldepth 36 score cp 1687 time 7258 nodes 3327827 pv c2h7
info depth 13 seldepth 36 score cp 9987 time 9466 nodes 4403115 pv c2h7 g8h8
info score cp 9987
bestmove c2h7

[Henk]

Only factor 4 in time. Factor 2 in nodes.

[Lyudmil Tsvetkov]

[d] 1r3rk1/1b4Np/5p1R/8/2q5/5P2/2BQP1PP/6RK w - - 0 1

I count about 40 seconds and 10 million nodes. Perhaps first thing to do is counting time cumulative.

Code: Select all

280       M15   12.65    10683640   c2h7 g8h8 h7d3 h8g7 h6h7 g7g8 h7h8 g8g7 d2h6 g7f7 d3c4 f7e7 h8f8 e7f8 
260   14.9460      16.43     7522319   c2h7 g8h8 h7d3 h8g7 d3c4 f8d8 c4d3 b7d5 d3f5 d8f8 f5e4 d5e4 f3e4 
240   10.5090       7.84     3442414   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2d6 b8e8 e2e3 g7g5 c2b3 g8h8 
220   10.5220       2.26     1419595   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2d6 b8e8 e2e3 g7g5 c2b3 
200   10.5480       1.07      799048   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2f4 b8c8 c2b3 g8h8 
180   10.4990       1.54      500866   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2f4 b8c8 c2b3 
160    9.3380       0.15      151225   g7h5 f6f5 d2g5 g8f7 h6h7 f7e6 h7e7 e6d6 
140    9.3470       0.23      104108   g7h5 f6f5 d2g5 g8f7 h6h7 f7e6 h7e7 
120    7.3270       0.06       42235   h6h7 f8d8 d2c1 c4e2 c2f5 b7d5 
100    7.4300       0.03       22435   h6h7 f8d8 d2c1 c4e2 c2f5 
 80    6.1580       0.02       12301   c2h7 g8g7 g1c1 c4b3 
 60    6.0600       0.01        5081   c2h7 g8g7 h7f5 
 40    6.1160       0.00         423   c2h7 g8g7 
 20    6.1370       0.00         217   c2h7 

first move that comes to mind is Rh7.
I guess this is shorther mate, but maybe Skipper knows better.

[Henk]

Dependent on random number generator too. Hardly changed anything.

Code: Select all

260       M15    4.80     7469064   c2h7 g8h8 h7d3 h8g7 h6h7 g7g8 h7h8 g8g7 d2h6 g7f7 d3c4 f7e8 h8f8 
240   14.0000      14.72     6339536   c2h7 g8h8 h7d3 h8g7 d3c4 b8d8 d2f4 d8d4 f4d4 g7h6 d4h4 h6g6 
220   10.4050       5.84     2847640   g7h5 c4c7 h5f6 f8f6 h6f6 b8d8 c2b3 g8h8 d2b4 b7c8 f3f4 
200   10.5440       1.03     1432090   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2f4 b8c8 c2b3 g8h8 
180   10.5210       2.71     1141431   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2f4 b8c8 c2b3 
160    8.4320       0.80      501463   c2d3 c4f7 h6h7 f7g7 h7g7 g8g7 d3e4 b7e4 
140    8.4440       0.72      302268   c2d3 c4c8 h6h7 b7d5 d3f5 c8d8 g1c1 
120    8.3490       0.27       98815   h6h7 b7d5 g7h5 d5c6 h7g7 g8h8 
100    7.5880       0.05       24786   h6h7 c4c5 c2b1 b7d5 d2c2 
 80    8.3550       0.02       10086   h6h7 c4c5 c2b1 c5e7 
 60    6.1020       0.02        5412   c2d3 c4c5 d3h7 
 40    6.1300       0.00         417   c2h7 g8g7 
 20    6.1320       0.04         217   c2h7 

[Henk]

[d] 1r3rk1/1b4Np/5p1R/8/2q5/5P2/2BQP1PP/6RK w - - 0 1

I count about 40 seconds and 10 million nodes. Perhaps first thing to do is counting time cumulative.

Code: Select all

280       M15   12.65    10683640   c2h7 g8h8 h7d3 h8g7 h6h7 g7g8 h7h8 g8g7 d2h6 g7f7 d3c4 f7e7 h8f8 e7f8 
260   14.9460      16.43     7522319   c2h7 g8h8 h7d3 h8g7 d3c4 f8d8 c4d3 b7d5 d3f5 d8f8 f5e4 d5e4 f3e4 
240   10.5090       7.84     3442414   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2d6 b8e8 e2e3 g7g5 c2b3 g8h8 
220   10.5220       2.26     1419595   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2d6 b8e8 e2e3 g7g5 c2b3 
200   10.5480       1.07      799048   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2f4 b8c8 c2b3 g8h8 
180   10.4990       1.54      500866   g7h5 c4c7 h5f6 f8f6 h6f6 c7g7 d2f4 b8c8 c2b3 
160    9.3380       0.15      151225   g7h5 f6f5 d2g5 g8f7 h6h7 f7e6 h7e7 e6d6 
140    9.3470       0.23      104108   g7h5 f6f5 d2g5 g8f7 h6h7 f7e6 h7e7 
120    7.3270       0.06       42235   h6h7 f8d8 d2c1 c4e2 c2f5 b7d5 
100    7.4300       0.03       22435   h6h7 f8d8 d2c1 c4e2 c2f5 
 80    6.1580       0.02       12301   c2h7 g8g7 g1c1 c4b3 
 60    6.0600       0.01        5081   c2h7 g8g7 h7f5 
 40    6.1160       0.00         423   c2h7 g8g7 
 20    6.1370       0.00         217   c2h7 

first move that comes to mind is Rh7.
I guess this is shorther mate, but maybe Skipper knows better.

Don't talk about me. I already have problems with visualizing after ply 6 or 8 or 10. Skipper can tell me all kinds of lies.

[Henk]

Probably mate in 7 or 13 ply

Code: Select all

300       M13   21.99    13386695   c2h7 g8h8 h7d3 h8g7 h6h7 g7g8 d2h6 c4g4 f3g4 b7g2 h1g2 b8b2 h6g6 g8h7 

[Lyudmil Tsvetkov]

Probably mate in 7 or 13 ply

Code: Select all

300       M13   21.99    13386695   c2h7 g8h8 h7d3 h8g7 h6h7 g7g8 d2h6 c4g4 f3g4 b7g2 h1g2 b8b2 h6g6 g8h7 

Rh7 is mate in same number (+-1). after Rh7, white plays Qh6.

SF chooses Bh7 and says mate in 7, but after Rh7 and it is shown Qh6, immediately agrees this is very short mate too. engines like giving checks, you know, they rarely see/prefer quiet moves like Rh7, but the result is the same.

why Skipper gives output in plies? SF says mate in number of moves(side to move).

[Henk]

Probably mate in 7 or 13 ply

Code: Select all

300       M13   21.99    13386695   c2h7 g8h8 h7d3 h8g7 h6h7 g7g8 d2h6 c4g4 f3g4 b7g2 h1g2 b8b2 h6g6 g8h7 

Rh7 is mate in same number (+-1). after Rh7, white plays Qh6.

SF chooses Bh7 and says mate in 7, but after Rh7 and it is shown Qh6, immediately agrees this is very short mate too. engines like giving checks, you know, they rarely see/prefer quiet moves like Rh7, but the result is the same.

why Skipper gives output in plies? SF says mate in number of moves(side to move).

Maybe I should modify that too if that is standard.