Tony P. wrote:BrendanJNorman wrote:Of course - but the difference is that Prodeo time and time again, has a habit of playing such piece sacs for rolling passed pawns.
That's a good point. Apparently, rolling passers have an unusually high weight in Prodeo's static eval
You both have seen this well and it has been the case since the mid or late 80's. Consider the below position.
[d] 8/4kpbn/p1p3p1/Pp2p2p/1P2Pn2/N1P1BP2/5P1P/5BK1 w - - 0 1
And the analysis of Mephisto Gideon of
1993, Nxb5 is found almost instantly based on the unstoppable A5 passer that is created. No reductions or other forms of pruning back then that have the potential to undermine the evaluation. The current ProDeo needs 17 plies to find it
while the formula has not changed during the years.
Code: Select all
Mephisto Gideon Professional (1993):
1 00:00 7 7.000 -0,22 Bxf4 exf4
1 00:00 38 38.000 +0,03 Nc2
1 00:00 63 63.000 +0,03 c4
2 00:00 596 596.000 -0,06 c4 Ng5
2 00:00 795 795.000 -0,05 Nc2 Bh6
3 00:00 1.517 1.517.000 -0,03 Nc2 Ng5 Bc5+ Kd7
3 00:00 2.401 2.401.000 +0,03 Bc5+ Ke6 Nc2
4 00:00 3.644 3.644.000 -0,15 Bc5+ Ke6 Nc2 Bh6
4 00:00 5.454 5.454.000 -0,06 Nc2 Bh6 c4 f5
5 00:00 11.803 11.803.000 -0,06 Nc2 Ng5 Bc5+ Kd7 Ne1
6 00:00 24.974 24.974.000 -0,17 Nc2 Ng5 Bc5+ Kd7 Ne1 Bf6
6 00:00 36.522 36.522.000 -0,16 Nb1 Ng5 Nd2 f5 c4
7 00:00 74.788 74.788.000 -0,16 Nb1 Ng5 Nd2 Bf6 c4 Kd7 Bc5
7 00:00 89.440 89.440.000 -0,08 Nc2 Ng5 Ne1 Bf6 c4 Kd7 Bc5
7 00:00 111.511 111.511.000 -0,08 c4
7 00:00 122.265 122.265.000 +0,08 c4 Ng5 cxb5 Nxf3+ Kh1 cxb5 Nxb5 Bh6
8 00:00 151.786 151.786.000 +0,06 c4 Ng5 cxb5 Nxf3+ Kh1 cxb5 Nxb5 Kd7 Nc3
9 00:00 233.550 233.550.000 +0,12 c4 Ng5 cxb5 Nxf3+ Kh1 cxb5 Nxb5 axb5 Bxb5 Kd6
9 00:00 314.415 314.415.000 +0,12 Nxb5
9 00:00 351.727 351.727.000 +0,34 Nxb5 cxb5 c4 bxc4 Bxc4 Ng5 Bxa6 Nxf3+ Kh1 Ng5 Bb7
10 00:00 427.975 427.975.000 +0,30 Nxb5 cxb5 c4 bxc4 Bxc4 Ng5 Bxa6 Nxf3+ Kh1 Ng5 Bc5+ Kd7 Bc4 Nxe4 Bxf7
11 00:00 655.108 655.108.000 +0,30 Nxb5 cxb5 c4 bxc4 Bxc4 Ng5 Bxa6 Nxf3+ Kh1 Ng5 Bc5+ Kd7 Bc4 Nxe4 Bxf7
11 00:00 842.183 842.183.000 +0,30 c4
11 00:00 655.108 655.108.000 +0,30 Nxb5 cxb5 c4 bxc4 Bxc4 Ng5 Bxa6 Nxf3+ Kh1 Ng5 Bc5+ Kd7 Bc4 Nxe4 Bxf7
12 00:01 3.920.499 3.920.499 +1,74 Nxb5 cxb5 Bxb5 Ng5 Bxa6 Kd6 Kh1 Kc7 Bc4 f5 a6 Nxf3 Bd5 Bf8