Not logged inRybka Chess Community Forum
Up Topic The Rybka Lounge / Computer Chess / Stockfish evaluations become so volatile
- - By Hamster (**) Date 2019-04-15 19:38 Upvotes 1
I have been a little bit away from the regular Stockfish updates. Using the latest build I realized how volatile the evaluations have become.
It makes it hard to know how Stockfish sees a position as it changes a lot from ply to ply and again a lot after switching sides. I understand
that some of it comes from the default Analysis Contempt setting:Both but even with Analysis Contempt=Off the volatility (change in eval
from ply to ply) is very high (see below).

Probably this is by design but what is the idea behind it. How to deal with this and what Analysis Contempt do you use in Infinite Analysis?

1.e4 e5 2.Nf3 Nc6 3.d4 exd4
HOUDINIG 6.03         asmFish 1year old   Stockfish "Both"    Stockfish "Off"
Volatility:  6%       Volatility: 10%     Volatility: 24%(!)  Volatility: 14%
Ply Eval  chgEva      Ply Eval  chgEva    Ply Eval  chgEva    Ply Eval  chgEva
11  +0.34             11  +0.68           11  +0.89           11  +0.15
12  +0.37  +0.03      12  +0.62  -0.06    12  +0.53  -0.36    12  +0.55  +0.40
13  +0.30  -0.07      13  +0.77  +0.15    13  +1.24  +0.71    13  +0.57  +0.02
14  +0.17  -0.13      14  +0.72  -0.05    14  +0.39  -0.85    14  +0.38  -0.19
15  +0.24  +0.07      15  +0.47  -0.25    15  +0.61  +0.22    15  +0.51  +0.13
16  +0.22  -0.02      16  +0.18  -0.29    16  +0.73  +0.12    16  +0.42  -0.09
17  +0.22  +0.00      17  +0.27  +0.09    17  +0.77  +0.04    17  +0.52  +0.10
18  +0.29  +0.07      18  +0.30  +0.03    18  +0.91  +0.14    18  +0.40  -0.12
19  +0.22  -0.07      19  +0.30  +0.00    19  +0.74  -0.17    19  +0.50  +0.10
19  +0.29  +0.07      20  +0.29  -0.01    20  +0.65  -0.09    20  +0.60  +0.10
19  +0.33  +0.04      21  +0.22  -0.07    20  +0.55  -0.10    20  +0.62  +0.02
19  +0.33  +0.00      21  +0.14  -0.08    20  +0.51  -0.04    21  +0.53  -0.09
20  +0.26  -0.07      21  +0.22  +0.08    21  +0.41  -0.10    21  +0.44  -0.09
20  +0.19  -0.07      21  +0.21  -0.01    21  +0.34  -0.07    21  +0.30  -0.14
20  +0.26  +0.07      22  +0.29  +0.08    22  +0.43  +0.09    21  +0.41  +0.11
20  +0.21  -0.05      22  +0.36  +0.07    22  +0.45  +0.02    21  +0.42  +0.01
20  +0.21  +0.00      22  +0.31  -0.05    23  +0.54  +0.09    22  +0.51  +0.09
21  +0.14  -0.07      23  +0.39  +0.08    23  +0.64  +0.10    22  +0.32  -0.19
21  +0.21  +0.07      23  +0.46  +0.07    23  +0.61  -0.03    22  +0.18  -0.14
21  +0.18  -0.03      23  +0.40  -0.06    24  +0.51  -0.10    22  +0.32  +0.14
21  +0.18  +0.00      24  +0.33  -0.07    24  +0.42  -0.09    22  +0.30  -0.02
22  +0.25  +0.07      24  +0.32  -0.01    24  +0.28  -0.14    23  +0.40  +0.10
22  +0.28  +0.03      25  +0.27  -0.05    24  +0.39  +0.11    23  +0.49  +0.09
22  +0.28  +0.00      26  +0.33  +0.06    24  +0.19  -0.20    23  +0.21  -0.28
23  +0.21  -0.07      27  +0.40  +0.07    25  +0.28  +0.09    23  +0.35  +0.14
23  +0.14  -0.07      27  +0.42  +0.02    25  +0.31  +0.03    24  +0.26  -0.09
                      28  +0.35  -0.07    26  +0.41  +0.10    24  +0.35  +0.09
                      28  +0.42  +0.07    26  +0.39  -0.02    24  +0.36  +0.01
                      27  +0.48  0.09     25  +0.26  -0.10
                      27  +0.58  0.10     25  +0.17  -0.09
                      27  +0.72  0.14     25  +0.03  -0.14
                      27  +0.67  -0.05    25  +0.15  +0.12
                                          25  +0.41  +0.26
                                          25  +0.50  +0.09
                                          26  +0.41  -0.09
                                          26  +0.31  -0.10
                                          26  +0.17  -0.14
Parent - - By MrKris (**) Date 2019-04-15 21:49
Excellent work, thank you!

- - -
(A similar thing, I do not have any where near the time to prove this, however:
- load any game to analyze
- Arena click 'Edit' so it leaves the game unchanged
- go back and forth in moves using the 'Analyze' button
-- I think lately Stockfish can even get "stuck" on an erroneous evaluation, 0.00 or a high/low one that no longer applies from a past move analyzed.
Rather than try to document and so on, it was much easier to 'Restart engine' and wait until the depth caught up.
I do not mean every time, just back and forth over the same few moves several times, sometimes.)

- - -

Here is a partial cause of you data, but your idea, I think, is correct, as you note the change amounts are increasing:
it seems to me, too, that Stockfish has become more 'volatile' as you put it, hindering analysis.

I read this somewhere years and years ago, I can not hope to re-find it:

Random position for example, FEN:
1rbq4/3nrpbk/p2p1npp/1PpP4/4P1PP/2N1BP2/1P1QBN2/R3K2R b KQ - 0 1

Arena: CFish_10: Found 510 WDL, 0 DTM and 510 DTZ tablebase files.
... 33/51+  01:28   655,844k  7,420k  -0.53  1. ... axb5
33/51  01:29   666,340k  7,418k  -0.50  1. ... axb5 2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Ncd3 12.Nxc4 Nxc4 13.e5 Kg8 14.e6 fxe6 15.dxe6 Bxe6 16.Qxd3 Nxb2 17.Rxb2 Rxc3 18.Rxb8 Qxb8 19.Qe4 Bf7 20.Rb1 Rb3 21.Rxb3 Qxb3 22.Bd3 Qb6 23.Qa8+ Bf8
34/53-  01:57   871,189k  7,411k  -0.59  1. ... axb5 2.Nxb5
34/53-  02:11   974,079k  7,418k  -0.69  1. ... axb5 2.Nxb5
34/57+  02:20   1,038,937k  7,416k  -0.59  1. ... axb5
34/57  02:27   1,093,718k  7,414k  -0.59  1. ... axb5

Notice the 33/51+, 33/51, 34/53- etc. depths.
I believe that the + - and nothing corresponds to the UCI output from double-clicking the .exe, below;
the cp {centipawn evaluation} upperbound or lowerbound or nothing:
{abrok} Stockfish 130419 64 POPCNT by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
setoption name Threads value 6
setoption name Hash value 256
go movetime 120000 {120 secs., default initial position} ...
info depth 31 seldepth 49 multipv 1 score cp 44 upperbound nodes 536971939 nps 6102023 hashfull 1000 tbhits 0 time 87999 pv e2e4 c7c5
...
info depth 32 seldepth 48 multipv 1 score cp 50 nodes 690854398 nps 6101229 hashfull 1000 tbhits 0 time 113232 pv e2e4
...
info depth 33 seldepth 40 multipv 1 score cp 59 lowerbound nodes 713545488 nps 6101808 hashfull 1000 tbhits 0 time 116940 pv e2e4
...
Parent - By Master Om (Bronze) Date 2019-04-18 02:51
Thats Mine and Uly's game position in Rybka forum :D
Parent - By user923005 (****) Date 2019-04-18 03:56
The + and - on the selective depth are for fail high and fail low (respectively) during the search.
Parent - - By user923005 (****) Date 2019-04-18 03:55
I also have a UCI setting I made for Stockfish which I call "Sewing Machine" which (when turned off) does not show any fail high or fail low.  It shows only the completed plies.
So at any depth, you will only see two plies.

P.S.
I never bother looking at output until it is at least 26 plies deep (unless there is a special reason).
There are settings in some GUIs that allow you to silence to the starting depth you are interested in.

I think a reason that other engines do not appear to be as volatile is that they do not show every single fail high and fail low.
Parent - - By MrKris (**) Date 2019-04-19 02:35
Interesting about your "Sewing Machine".  Is it available somewhere?

- - -

The problem with Stockfish regular (not upperbound nor lowerbound) output is that there is only 1 per ply depth.
Stockfish is perhaps the fasted 'depther' but even its ply advance eventually slows.
An example of its volatility without upper/lower-bounds is below.

The problems with Stockfish's upper/lower-bound output are:
1) the evaluation is one of the range extremes, the actual unknown;
2) the plies showing is ofen very short or no after-move plies (sometimes called 1-ply, the move to make only).
So there is limited usefulness for Stockfish's 'between plies' upper/lower-bound output.

Apparently when Stockfish moves it just 'dumps' its most recent, whether or not it is an upper/lower-bound or not.

AMD PhII X6 6-cpu, move/45 mins.; from http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=32783#pid582608 after the forced 1...axb5
1rbq4/3nrpbk/3p1npp/1ppP4/4P1PP/2N1BP2/1P1QBN2/R3K2R w KQ - 0 2
Arena restarted:  upperbound + and lowerbound - removed:
FEN: 1rbq4/3nrpbk/3p1npp/1ppP4/4P1PP/2N1BP2/1P1QBN2/R3K2R w KQ - 0 2 
 19/38  00:01   6,562k  6,156k  +0.30  2.Bxb5... all with many plies, below
 20/32  00:01   7,325k  6,197k  +0.29  2.Bxb5...
 21/35  00:01   10,431k  6,288k  +0.41  2.Bxb5...
 22/38  00:03   20,535k  6,313k  +0.31  2.Bxb5...
 23/44  00:04   29,005k  6,336k  +0.65  2.Bxb5...
 24/43  00:07   47,899k  6,340k  +0.67  2.Bxb5...
 125/46  00:12   80,371k  6,427k  +0.49  2.Nxb5... < low @ 00:12
 26/45  00:13   87,129k  6,441k  +0.79  2.Nxb5... < high @ 00:13
 27/42  00:16   106,458k  6,470k  +0.74  2.Nxb5...
 28/51  00:28   185,645k  6,506k  +0.44  2.Bxb5... < low @ 00:28
 29/51  00:37   246,082k  6,542k  +0.66  2.Nxb5... 
 30/47  00:46   307,642k  6,584k  +0.72  2.Nxb5... < high @ 00:46
 31/59  01:03   420,202k  6,616k  +0.46  2.Nxb5...
 32/59  01:35   628,881k  6,608k  +0.40  2.Nxb5... < low @ 01:35
 33/55  01:53   752,993k  6,621k  +0.69  2.Nxb5...
 34/57  02:11   873,928k  6,628k  +0.75  2.Nxb5... < high @ 02:11
 35/57  03:25   1,361,798k  6,616k  +0.26  2.Nxb5...
 36/51  04:10   1,654,523k  6,615k  +0.18  2.Nxb5...
 37/54  05:28   2,166,168k  6,597k  +0.15  2.Nxb5... < low @ 05:28
 38/67  06:06   2,428,055k  6,616k  +0.38  2.Nxb5...
 39/64  10:38   4,213,917k  6,597k  +0.70  2.Nxb5... < 10 mins. plies 1 through 39
 40/74  40:27   16,357,406k  6,738k  +0.75  2.Nxb5... < 30 mins. longer for ply 40
 41/68  43:17   17,515,048k  6,744k  +0.83  2.Nxb5... < high @ 43:17
[42/69-  43:23   17,553,309k  6,743k  +0.73  2.Nxb5 Ne5... < - lowerbound]
(42/69  45:00   18,219,648k  6,748k  +0.73  2.Nxb5 Ne5... < same eval. as lowerbound)

Stockfish_19041816: Found 510 tablebases - complete output:
 1/1  00:00   556  185k  +2.32  2.Bxb5
 2/2  00:00   735  245k  +3.19  2.Nxb5 h5
 3/3  00:00   920  307k  +3.46  2.Nxb5 h5 3.Nxd6
 4/5  00:00   2k  529k  +0.76  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5
 5/6  00:00   2k  707k  +2.00  2.Nxb5 Ne5 3.Qa5
 6/7  00:00   5k  1,033k  +1.48  2.Nxb5 Rb6 3.g5 hxg5 4.hxg5+ Nh5
 7/8  00:00   10k  1,608k  +0.29  2.Nxb5 Ne5 3.Qa5 Rb6 4.g5 Nh5 5.gxh6
 8/9  00:00   10k  1,704k  +0.86  2.Nxb5 Ne5 3.Qa5 Rb6 4.g5
 9/11  00:00   17k  1,861k  +1.21  2.Nxb5 Ne5 3.Qa5 Qd7 4.Nxd6 Qxd6
 10/15  00:00   85k  2,939k  +0.29  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Bd7 5.Bf4 Rb4 6.0-0 Ne8 7.Kg2 h5 8.g5
 11/16  00:00   111k  3,160k  +0.64  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.Bf4 Rd4 6.Qc1
 12/18  00:00   177k  3,611k  +0.88  2.h5 g5 3.Bxb5 Ne5 4.Be2 Reb7 5.Ra2 Bd7 6.0-0 Rb4 7.Rfa1 Ne8
 13/25  00:00   421k  4,340k  +0.81  2.h5 g5 3.Bxb5 Ne5 4.Be2 Reb7 5.Ra2 Bd7 6.0-0 Rb4 7.Rfa1 Ne8 8.Qc2 Kg8 9.Kg2 Nc7
 14/20  00:00   460k  4,419k  +0.78  2.h5 g5 3.Bxb5 Ne5 4.Be2 Reb7 5.Ra2 Bd7 6.0-0 Ne8 7.Qc2 Nc7 8.Rfa1 Rb4 9.Qc1 Kg8 10.Kg2 Nc4 11.Bxc4
 15/24  00:00   1,006k  5,214k  +0.58  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.h5 g5 6.0-0 Nfd7 7.f4 gxf4 8.Bxf4 c4 9.g5 Nc5
 16/29  00:00   1,959k  5,745k  +0.16  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.h5 g5 6.0-0 Nfd7 7.Qc2 Nb6 8.Nfd1 Nbc4 9.Bf2 Qb6 10.Kg2 Nxb2 11.Rxb2 Rxb2 12.Nxb2 Qxb2 13.Qxb2 Rxb2
 17/27  00:00   2,422k  5,850k  +0.26  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.Bf4 Nfd7 6.Qc1 Qb6 7.0-0 Qb7 8.g5 Rxb2 9.Rxb2 Qxb2 10.Kg2 Qxc1 11.Rxc1 Rb3 12.gxh6 Bxh6
 18/34  00:00   5,370k  6,103k  +0.12  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.h5 g5 6.0-0 Nfd7 7.f4 gxf4 8.Bxf4 c4 9.g5 Nc5 10.Bxe5 Bxe5 11.Ng4 Bxg4 12.Bxg4 Qxg5 13.Qxg5 hxg5 14.Rxf7+ Kg8
 19/38  00:01   6,562k  6,156k  +0.30  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.0-0 Nfd7 6.f4 Nc4 7.Bxc4 Rxc4 8.h5 Rcb4 9.Qe2 Qb6 10.hxg6+ fxg6 11.Qf3 Rxb2 12.Na4 Qa6 13.Rxb2 Bxb2 14.Nxb2 Rxb2
 20/32  00:01   7,325k  6,197k  +0.29  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.0-0 Nfd7 6.f4 Nc4 7.Bxc4 Rxc4 8.h5 Rcb4 9.Qe2 R8b7 10.Kg2 Nb6 11.hxg6+ fxg6 12.f5 Nc4 13.Bf4 g5 14.Bc1 Ne5 15.Nd3 Nxd3 16.Qxd3
 21/35  00:01   10,431k  6,288k  +0.41  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.0-0 Qb6 6.Qd1 Qd8 7.Qa1 Nfd7 8.Kg2 Nc4 9.Bxc4 Rxc4 10.Rh1 Bd4 11.Bxd4 cxd4 12.Ne2 Nc5 13.Ra3 Bd7
 22/38  00:03   20,535k  6,313k  +0.31  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.0-0 Ne8 6.Kg2 Nc7 7.Bf4 Bd7 8.Bg3 Nb5 9.Nd3 Nxd3 10.Bxd3 Qe7 11.Rh1 Qf8 12.Nxb5 Bxb5 13.Bxb5 R8xb5
 23/44+  00:03   22,256k  6,326k  +0.41  2.Bxb5
 23/44+  00:04   26,925k  6,331k  +0.50  2.Bxb5
 23/44+  00:04   27,800k  6,330k  +0.64  2.Bxb5
 23/44  00:04   29,005k  6,336k  +0.65  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.Qc2 Nfd7 6.f4 Nc4 7.Bc1 Na5 8.h5 Nb3 9.e5 Nd4 10.hxg6+ fxg6 11.Qd3 dxe5 12.f5 gxf5 13.gxf5 Nxe2 14.Nxe2
 24/38-  00:04   30,185k  6,319k  +0.55  2.Bxb5 Ne5
 24/38-  00:05   32,495k  6,304k  +0.46  2.Bxb5 Ne5
 24/38+  00:05   36,981k  6,310k  +0.55  2.Bxb5
 24/43-  00:06   39,656k  6,309k  +0.32  2.Bxb5 Ne5
 24/43+  00:06   41,606k  6,315k  +0.53  2.Bxb5
 24/43  00:07   47,899k  6,340k  +0.67  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 Qf6 8.Kf1 c4 9.Kg2 Nc5 10.Bxc5 dxc5 11.Qd2 Kg8 12.Ne3 Rb3 13.Nf5 Bxf5 14.gxf5 Qd6 15.Rc1 R3b4 16.Rc3
 25/43+  00:10   64,145k  6,407k  +0.76  2.Bxb5
 25/43-  00:10   69,682k  6,404k  +0.58  2.Bxb5 Ne5
 25/44-  00:11   71,928k  6,403k  +0.44  2.Bxb5 Ne5
 25/46+  00:12   77,838k  6,420k  +0.58  2.Nxb5
 25/46  00:12   80,371k  6,427k  +0.49  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Qf6 11.Kg2 Bd7 12.Qd2 Na4 13.Bxe5 dxe5 14.Qc2 Nc5 15.Ra5 Na4 16.Qxc4 Nxb2 17.Qc1 Nxd1 18.Nxd1 Qf4 19.Nc3 Bf8 20.Rh1 Rb2 21.Qxf4 exf4
 26/45+  00:13   84,017k  6,436k  +0.58  2.Nxb5
 26/45+  00:13   85,195k  6,437k  +0.68  2.Nxb5
 26/45  00:13   87,129k  6,441k  +0.79  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Qb6 10.Kf1 Ba6 11.Kg2 Nc5 12.Qd2 Ncd3 13.Bxd3 cxd3 14.Ne3 Nc4 15.Nxc4 Bxc4 16.Nxd3 Bxc3 17.bxc3
 27/42  00:16   106,458k  6,470k  +0.74  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Qb6 11.Ne3 Ba6 12.Rfa1 Rxc3 13.bxc3 Nb3 14.Nf5 Nxa1 15.Rxa1 Nd3 16.Bxd3 cxd3 17.Qa2 Bb5 18.Nxg7 Kxg7 19.Kg2 Qe3 20.Qa7 Qxa7 21.Rxa7 Bc4
 28/46-  00:17   114,764k  6,475k  +0.64  2.Nxb5 Ne5
 28/46-  00:18   121,902k  6,484k  +0.55  2.Nxb5 Ne5
 28/46-  00:20   133,321k  6,486k  +0.41  2.Nxb5 Ne5
 28/46-  00:25   168,704k  6,493k  +0.21  2.Nxb5 Ne5
 28/51+  00:28   184,299k  6,505k  +0.37  2.Bxb5
 28/51  00:28   185,645k  6,506k  +0.44  2.Bxb5 Ne5 3.Be2 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Qb6 10.Kf1 Nc5 11.Kg2 Ba6 12.Ne3 Ncd3 13.Qd2 Nf4+ 14.Kh2 Nxe2 15.Qxe2 Nd3 16.Nxd3 cxd3 17.Qd2 Be5+ 18.Bxe5 dxe5 19.Rha1 Rxb2 20.Rxb2 Qxb2
 29/51+  00:35   233,147k  6,530k  +0.53  2.Nxb5
 29/51+  00:36   241,769k  6,537k  +0.62  2.Nxb5
 29/51  00:37   246,082k  6,542k  +0.66  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Qb6 10.Kf1 Ba6 11.Kg2 Nc5 12.Qd2 Ncd3 13.Ne3 Nf4+ 14.Kh2 Nd7 15.Rha1 Bxc3 16.bxc3 Rb2 17.Rxb2 Qxb2 18.Ra2 Qxd2 19.Rxd2 Rb3 20.Nfd1 Ne5 21.Kg3
 30/47  00:46   307,642k  6,584k  +0.72  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Ncd3 12.Nxc4 Nxc4 13.e5 Ncxe5 14.Nxd3 Nxd3 15.Bxd3+ Kg8 16.Bc4 Bxc3 17.Bxb3 Be5 18.Bc4 Qf6 19.Kh1 Qf4 20.b3 Qg3 21.Qf2 Qh3+ 22.Kg1 Bb5 23.Bxb5
 31/44-  00:55   363,779k  6,595k  +0.63  2.Nxb5 Ne5
 31/59-  00:57   376,706k  6,602k  +0.53  2.Nxb5 Ne5
 31/59  01:03   420,202k  6,616k  +0.46  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Qf6 12.Nh3 Na4 13.Nxc4 Nxc3 14.bxc3 Qd8 15.Na5 Qb6+ 16.Nf2 Rb2 17.Rxb2 Qxb2 18.Qxb2 Rxb2 19.Re1 Nxf3+ 20.Bxf3 Bxc3 21.Ra1 Rxf2 22.Kxf2 Bxa1 23.Nc4 Bd4+ 24.Kg2 Be5 25.Nxe5 dxe5 26.d6 Kg8
 32/56-  01:17   513,901k  6,612k  +0.36  2.Nxb5 Ne5
 32/56-  01:31   602,788k  6,610k  +0.27  2.Nxb5 Ne5
 32/56+  01:32   612,730k  6,611k  +0.36  2.Nxb5
 32/59  01:35   628,881k  6,608k  +0.40  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Qf6 12.Nf5 Na4 13.Nd1 Nxc3 14.bxc3 Kg8 15.Kg2 Bxf5 16.exf5 Qd8 17.Qe4 Ra8 18.Rxa8 Qxa8 19.Bxc4 Ra3 20.Bd3 Bf6 21.Bb5 Qb7 22.Ba4 Qa8 23.Bc6 Qa7 24.Rf2 Ra1 25.Rd2 Qa5 26.Be8 Ra2 27.Re2 Ra1 28.Qd4 Kg7
 33/54+  01:46   706,082k  6,612k  +0.50  2.Nxb5
 33/55+  01:48   720,278k  6,616k  +0.59  2.Nxb5
 33/55  01:53   752,993k  6,621k  +0.69  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Qf6 12.Kg2 Qf4 13.Nfd1 Ncd3 14.Qd2 R3b7 15.Bxd3 cxd3 16.Rf2 Bf6 17.Ra6 Be7 18.Ra3 Rb3 19.Ra7 Bf6 20.Nf5 Qxd2 21.Rxd2 Bxf5 22.Bxe5 Bxe5 23.exf5
 34/57  02:11   873,928k  6,628k  +0.75  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Qf6 12.Kg2 Qf4 13.Nfd1 Ned3 14.Bxd3 cxd3 15.Qd2 Bxc3 16.bxc3 Qf6 17.Nc4 Bb5 18.Na5 Rb1 19.Nc6 Rb7 20.Nd4 Bc4 21.Ra8 Qf4 22.Rf2 Nb3 23.Nxb3 R7xb3 24.Ra4 Bb5 25.Ra7 Qxd2 26.Rxd2 Kg7 27.Ra8 Bc4 28.Ne3 Rxc3
 35/40-  02:14   889,286k  6,630k  +0.66  2.Nxb5 Ne5
 35/41-  02:18   920,325k  6,628k  +0.56  2.Nxb5 Ne5
 35/54-  02:20   929,799k  6,627k  +0.42  2.Nxb5 Ne5
 35/57+  02:27   977,578k  6,631k  +0.54  2.Nxb5
 35/57  03:25   1,361,798k  6,616k  +0.26  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Qf6 12.Kg2 Qf4 13.Nfd1 Ned3 14.Bxd3 cxd3 15.Qd2 Bxc3 16.bxc3 Qf6 17.Nc4 Bb5 18.Nde3 Nd7 19.Rc1 Rc8 20.Qd1 Bxc4 21.Nxc4 Qf4 22.Qxb3 Qxc1 23.Qb7 Rxc4 24.Qxd7 Qf4
 36/51  04:10   1,654,523k  6,615k  +0.18  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Qf6 12.Nf5 Na4 13.Nd1 Nxc3 14.bxc3 Kg8 15.Kg2 Bxf5 16.exf5 Qd8 17.Qe4 Ra8 18.Rxa8 Qxa8 19.Bxc4 Ra3 20.Bb5 Qa5 21.Qb4 Qxb4 22.cxb4 Rb3 23.Be2 Rxb4 24.Nf2 Nd7 25.Ne4 Rb2 26.Re1 Be5
 37/53-  05:17   2,091,073k  6,594k  +0.08  2.Nxb5 Ne5
 37/54+  05:22   2,123,567k  6,594k  +0.18  2.Nxb5
 37/54+  05:22   2,126,507k  6,594k  +0.32  2.Nxb5
 37/54+  05:25   2,144,258k  6,597k  +0.52  2.Nxb5
 37/54  05:28   2,166,168k  6,597k  +0.15  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Qf6 12.Nf5 Na4 13.Kg2 Nxc3 14.bxc3 Nd3 15.Bxd3 cxd3 16.Qd2 Rxc3 17.Re1 Rcb3 18.Nxg7 Kxg7 19.Nxd3 Qd4 20.Nf2 Qxd2 21.Rxd2 Ra3 22.e5 dxe5 23.Nd3 e4 24.Rxe4 f5 25.gxf5
 38/60+  05:36   2,223,452k  6,604k  +0.24  2.Nxb5
 38/60+  05:42   2,264,603k  6,605k  +0.33  2.Nxb5
 38/61+  05:52   2,328,033k  6,607k  +0.47  2.Nxb5
 38/61+  06:02   2,395,980k  6,612k  +0.67  2.Nxb5
 38/67  06:06   2,428,055k  6,616k  +0.38  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Qf6 12.Nf5 Na4 13.Kg2 Nxc3 14.bxc3 Nd3 15.Bxd3 cxd3 16.Qd2 Qxc3 17.Qxc3 Rxc3 18.Rd1 Bxf5 19.exf5 Rc2 20.Rd2 Rxa2 21.Rxa2 Rb5 22.Nxd3 Rxd5 23.Nf2 Be5 24.Kf1 Rb5 25.Nd3 Bg3 26.Kg2 Be5 27.Nxe5 dxe5 28.Rc2 Rb3 29.Rc7
 39/60-  08:13   3,234,277k  6,558k  +0.29  2.Nxb5 Ne5
 39/64-  09:37   3,803,774k  6,588k  +0.19  2.Nxb5 Ne5
 39/64+  10:00   3,960,139k  6,590k  +0.29  2.Nxb5
 39/64+  10:04   3,985,283k  6,591k  +0.48  2.Nxb5
 39/64  10:38   4,213,917k  6,597k  +0.70  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Nfd7 7.Ncd1 c4 8.Bd2 Rb3 9.Bc3 Nc5 10.0-0 Bd7 11.Ne3 Ncd3 12.Nxc4 Nxc4 13.e5 Kg8 14.Qxd3 Nxb2 15.Qd2 Na4 16.Ba1 Bxe5 17.Bxe5 dxe5 18.Rc1 Rb2 19.Rxb2 Rxb2 20.Qe3 Qa5 21.d6 Qd5 22.Ne4 Kg7 23.Rd1 Qb7 24.Kf2 Rb3 25.Rd3
 40/52-  11:39   4,630,520k  6,617k  +0.61  2.Nxb5 Ne5
 40/52-  11:58   4,758,182k  6,621k  +0.52  2.Nxb5 Ne5
 40/56-  14:37   5,845,682k  6,660k  +0.38  2.Nxb5 Ne5
 40/63+  15:56   6,384,052k  6,676k  +0.49  2.Nxb5
 40/63+  16:49   6,748,219k  6,687k  +0.76  2.Nxb5
 40/74  40:27   16,357,406k  6,738k  +0.75  2.Nxb5 Ne5 3.Nc3 Rb3 4.Ra2 Reb7 5.Kf1 Bd7 6.h5 g5 7.Kg2 Ne8 8.Rha1 Nc7 9.Qc2 R3b6 10.Rb1 Rb3 11.Bc1 R3b6 12.Bd2 Rb8 13.Rba1 Qc8 14.Qb1 Qd8 15.Qc1 R6b7 16.Be1 Rb6 17.Qc2 Qc8 18.Bd2 Kg8 19.Ncd1 Bb5 20.Bc3 Bxe2 21.Qxe2 Nb5 22.Qc2 Nd4 23.Bxd4 cxd4 24.Qxc8+ Rxc8
 41/55-  41:04   16,605,943k  6,739k  +0.65  2.Nxb5 Ne5
 41/63+  41:26   16,758,147k  6,740k  +0.75  2.Nxb5
 41/68+  42:37   17,249,003k  6,743k  +0.89  2.Nxb5
 41/68  43:17   17,515,048k  6,744k  +0.83  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Rb4 5.h5 g5 6.Qc2 Ne8 7.0-0 Nc7 8.Kg2 R4b6 9.Rfa1 Bd7 10.Bd2 Qf6 11.Nd3 Bb5 12.Nxe5 Qxe5 13.Bxb5 Nxb5 14.Ne2 Qe8 15.Qd3 Kg8 16.Rb1 Nd4 17.Nxd4 Bxd4 18.b4 Be5 19.Qc4 Qb5 20.Qxb5 Rxb5 21.Kf2 R5b7 22.Ke2 Kg7 23.Kd3 cxb4 24.Rb3 f6 25.Be3 Bf4 26.Bxf4 gxf4
 42/69-  43:23   17,553,309k  6,743k  +0.73  2.Nxb5 Ne5
(42/69  45:00   18,219,648k  6,748k  +0.73  2.Nxb5 Ne5 << final 'dump' with move made,
same eval. & short PV as the prior lower-bound but symbol supressed)
Parent - - By user923005 (****) Date 2019-04-19 05:39
Here is a link to a fairly recent version (includes source code):
https://drive.google.com/open?id=1GKQ0dleOMho-XKTwiA0zczbiuQ9VvJXe
You will need to adjust the UCI settings.
The customized binaries are called:
stockfish-x64-mingw.exe for the version that has popcount instructions in it, and
stockfish-x64-crusty.exe for the version that will run on really old 64 bit hardware.
You can use the makefile to make other versions if you have gcc.

You probably want to turn logging off, because it will make it faster, especially for short time control.
And if you want to turn off the sewing machine, that is a UCI option also.
The name of the UCI option is:
"Show Fail High and Fail Low"
You might like to turn it off, and it will greatly reduce the volume of output.
Parent - By gsgs (***) Date 2019-04-19 09:39 Edited 2019-04-19 10:52
useful for asmfish in Droidfish, when you let it analyse a position for days,weeks,
e.g. one tablet for each correspondence game.

When you look at it, it often only shows some <= or >= evals.
I sometimes avoid this by setting multipv=2 or larger,
where it doesn't show fail high, fail low. However speed is lower then.

So the natural feature would be have a multipv=1 without fail high/fail low,
different from the default multipv=1

-------------------------
add a feature to display the average of the evals
of the ~3 last depths , so to reduce the fluctuations
Parent - By MrKris (**) Date 2019-04-19 02:45
The old Spike 1.4 (released Feb. 2011, 8 threads max.) has better output, always many half-moves long, but of course its depth increases slowly and current engines show its moves as relatively inaccurate.

Here its evaluations are less volatile than Stockfish above.

Also it has a few +- upper/lower bounds, vs. Stockfish's majority of outputs upper/lower bounds.
FEN: 1rbq4/3nrpbk/3p1npp/1ppP4/4P1PP/2N1BP2/1P1QBN2/R3K2R w KQ - 0 2
Spike 1.4:
 0  00:00   0  0  +0.67  
 1  00:00   163  82k  +1.67  2.Bxb5
 1  00:00   210  53k  +1.67  2.Bxb5
 2  00:00   387  77k  +0.95  2.Bxb5 Ne5
 2  00:00   468  67k  +1.05  2.Nxb5 Ne5
 2  00:00   949  95k  +1.05  2.Nxb5 Ne5
 3  00:00   1k  96k  +1.61  2.Nxb5 Ne5 3.g5
 3  00:00   1k  87k  +1.61  2.Nxb5 Ne5 3.g5
 4  00:00   3k  130k  +1.76  2.Nxb5 Ne5 3.g5 Rxb5 4.Bxb5 Nxf3+
 4  00:00   3k  124k  +1.76  2.Nxb5 Ne5 3.g5 Rxb5 4.Bxb5 Nxf3+
 5  00:00   4k  144k  +1.84  2.Nxb5 Ne5 3.g5 hxg5 4.hxg5+ Nh5
 5  00:00   4k  140k  +1.84  2.Nxb5 Ne5 3.g5 hxg5 4.hxg5+ Nh5
 6  00:00   6k  182k  +1.55  2.Nxb5 Ne5 3.g5 Rxb5 4.gxf6 Nxf3+ 5.Bxf3 Bxf6 6.Bxh6 Rxb2
 6  00:00   13k  352k  +1.88  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Nb6 5.0-0-0
 6  00:00   15k  358k  +1.88  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Nb6 5.0-0-0
 7+  00:00   16k  382k  +1.96  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Nb6 5.f4
 7+  00:00   24k  507k  +2.12  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Nb6 5.f4
 7  00:00   30k  571k  +2.13  2.g5 Ng8 3.Nxb5 Ne5 4.Qa5 Re8 5.f4
 7  00:00   31k  571k  +2.13  2.g5 Ng8 3.Nxb5 Ne5 4.Qa5 Re8 5.f4
 8+  00:00   44k  408k  +2.21  2.g5 Ng8 3.Nxb5 Ne5 4.Qa5 Re8 5.f4
 8  00:00   60k  519k  +2.17  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Nb6 5.f4 Kg8 6.Bxh5 gxh5 7.Rxh5
 8  00:00   62k  530k  +2.17  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Nb6 5.f4 Kg8 6.Bxh5 gxh5 7.Rxh5
 9-  00:00   92k  550k  +2.09  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Nb6 5.f4 Kg8 6.Bxh5 gxh5 7.Rxh5
 9-  00:00   120k  524k  +1.93  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Nb6 5.f4 Kg8 6.Bxh5 gxh5 7.Rxh5
 9-  00:00   148k  613k  +1.61  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Nb6 5.f4 Kg8 6.Bxh5 gxh5 7.Rxh5
 9  00:00   290k  922k  +1.58  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Nb6 6.f4 Re8 7.Ra7 Re7 8.Rxe7 Qxe7
 9  00:00   299k  928k  +1.58  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Nb6 6.f4 Re8 7.Ra7 Re7 8.Rxe7 Qxe7
 10  00:00   350k  1,047k  +1.60  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Ne5 6.Nc3 Reb7 7.Ra2 Bd7 8.f4
 10  00:00   401k  1,145k  +1.60  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Ne5 6.Nc3 Reb7 7.Ra2 Bd7 8.f4
 11+  00:00   434k  1,215k  +1.68  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Ne5 6.Nc3 Reb7 7.Ra2 Bd7 8.f4
 11  00:00   436k  1,217k  +1.60  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Ne5 6.Nc3 Reb7 7.Ra2 Bd7 8.f4
 11  00:00   595k  1,514k  +1.60  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Ne5 6.Nc3 Reb7 7.Ra2 Bd7 8.f4
 12-  00:00   864k  1,958k  +1.52  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Ne5 6.Nc3 Reb7 7.Ra2 Bd7 8.f4
 12-  00:00   1,297k  2,453k  +1.36  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Ne5 6.Nc3 Reb7 7.Ra2 Bd7 8.f4
 12  00:00   1,753k  2,801k  +1.59  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.Ng4 Ba6 7.Ra5 Ne5 8.Nxe5 Bxe5 9.b4 Ng3 10.bxc5 dxc5
 12  00:00   1,753k  2,801k  +1.59  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.Ng4 Ba6 7.Ra5 Ne5 8.Nxe5 Bxe5 9.b4 Ng3 10.bxc5 dxc5
 13-  00:00   2,042k  3,012k  +1.51  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.Ng4 Ba6 7.Ra5 Ne5 8.Nxe5 Bxe5 9.b4 Ng3 10.bxc5 dxc5
 13+  00:00   2,543k  3,261k  +1.67  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Rd8 8.Bc4 Rde8 9.Nxd6
 13  00:00   2,682k  3,308k  +1.74  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Rd8 8.Bc4 Bb7 9.Ra1 Rde8 10.Ra7 Ba6
 13  00:00   2,682k  3,308k  +1.74  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Rd8 8.Bc4 Bb7 9.Ra1 Rde8 10.Ra7 Ba6
 14-  00:00   2,936k  3,450k  +1.66  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Rd8 8.Bc4 Bb7 9.Ra1 Rde8 10.Ra7 Ba6
 14+  00:01   3,813k  3,738k  +1.82  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Rd8 8.b3 Rde8 9.Nxd6
 14  00:01   3,970k  3,773k  +1.57  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Bxb5 8.Bxb5 Qc7 9.b3 Nf8 10.Ba4 Bh8 11.Ra6
 14  00:01   4,235k  3,802k  +1.57  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Bxb5 8.Bxb5 Qc7 9.b3 Nf8 10.Ba4 Bh8 11.Ra6
 15+  00:01   4,680k  3,929k  +1.65  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Bxb5 8.Bxb5 Qc7 9.b3 Nf8 10.Ba4 Bh8 11.Ra6
 15  00:01   4,915k  3,970k  +1.63  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Bxb5 8.Rxb5 Qa7 9.Ra5 Qc7 10.Ra2 Ree8 11.Bg4 Nb6
 15  00:01   5,688k  4,125k  +1.63  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Bxb5 8.Rxb5 Qa7 9.Ra5 Qc7 10.Ra2 Ree8 11.Bg4 Nb6
 16-  00:01   7,528k  4,516k  +1.55  2.g5 hxg5 3.hxg5+ Nh5 4.Nxb5 Kg8 5.Rg1 Qb6 6.f4 Ba6 7.Ra5 Bxb5 8.Rxb5 Qa7 9.Ra5 Qc7 10.Ra2 Ree8 11.Bg4 Nb6
 16+  00:02   10,859k  4,934k  +1.71  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Kg8 5.g5 hxg5 6.hxg5 Nh5 7.Rg1 Bd7 8.f4
 16-  00:02   14,454k  5,181k  +1.55  2.Nxb5 Ne5 3.Nc3 Reb7 4.Ra2 Kg8 5.g5 hxg5 6.hxg5 Nh5 7.Rg1 Bd7 8.f4
 16  00:05   33,920k  5,740k  +1.56  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Reb7 5.Ra2 Ne8 6.0-0 Kg8 7.Rfa1 Nc7 8.Qc1 Rb4 9.Bf4 Nc4 10.Bxc4 Rxc4 11.Ra7
 16  00:05   33,920k  5,740k  +1.56  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Reb7 5.Ra2 Ne8 6.0-0 Kg8 7.Rfa1 Nc7 8.Qc1 Rb4 9.Bf4 Nc4 10.Bxc4 Rxc4 11.Ra7
 17  00:07   43,690k  5,873k  +1.58  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Rb4 6.Rfc1 Kg8 7.Ra2 f5 8.Rca1 Nc7 9.Ra7 fxe4 10.Nfxe4 Nc4 11.Bxc4 Rxc4
 17  00:07   45,894k  5,879k  +1.58  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Rb4 6.Rfc1 Kg8 7.Ra2 f5 8.Rca1 Nc7 9.Ra7 fxe4 10.Nfxe4 Nc4 11.Bxc4 Rxc4
 18-  00:08   50,721k  5,899k  +1.50  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Rb4 6.Rfc1 Kg8 7.Ra2 f5 8.Rca1 Nc7 9.Ra7 fxe4 10.Nfxe4 Nc4 11.Bxc4 Rxc4
 18  00:11   69,325k  5,988k  +1.63  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Rb4 10.Nd3 Rb7 11.R7a4 Rb8 12.Qg2
 18  00:11   69,325k  5,988k  +1.63  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Rb4 10.Nd3 Rb7 11.R7a4 Rb8 12.Qg2
 19-  00:12   77,978k  6,022k  +1.55  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Rb4 10.Nd3 Rb7 11.R7a4 Rb8 12.Qg2
 19  00:14   90,534k  6,083k  +1.55  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Rb4 10.Nd3 Rb7 11.R7a5 Bd7 12.Qg2
 19  00:15   93,586k  6,087k  +1.55  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Rb4 10.Nd3 Rb7 11.R7a5 Bd7 12.Qg2
 20+  00:18   110,988k  6,163k  +1.63  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Rb4 10.Nd3 Rb7 11.R7a5 Bd7 12.Qh2
 20-  00:19   119,977k  6,165k  +1.47  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Rb4 10.Nd3 Rb7 11.R7a5 Bd7 12.Qh2
 20  00:24   154,774k  6,232k  +1.59  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Kg8 10.Qe2 Rb4 11.Nd3 Rb8 12.Nf4 Bd4 13.Bxd4 cxd4
 20  00:24   154,774k  6,232k  +1.59  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Kg8 10.Qe2 Rb4 11.Nd3 Rb8 12.Nf4 Bd4 13.Bxd4 cxd4
 21-  00:26   163,113k  6,233k  +1.51  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Kg8 10.Qe2 Rb4 11.Nd3 Rb8 12.Nf4 Bd4 13.Bxd4 cxd4
 21  00:32   207,658k  6,298k  +1.50  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Qd7 10.Kf1 Rb4 11.Bf4 Rb7 12.R7a3 Rb4 13.Ra5 Kg8
 21  00:34   219,594k  6,313k  +1.50  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Qd7 10.Kf1 Rb4 11.Bf4 Rb7 12.R7a3 Rb4 13.Ra5 Kg8
 22+  00:44   287,551k  6,396k  +1.58  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Qd7 10.Qc1 Rb4 11.Qc2 Rb8 12.Bf4 Bd4 13.Kf1 Kg8 14.Qd2
 22-  00:53   339,176k  6,395k  +1.42  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.Ra2 Rb4 6.0-0 Nc4 7.Bxc4 Rxc4 8.Rfa1 Nc7 9.Ra7 Qd7 10.Qc1 Rb4 11.Qc2 Rb8 12.Bf4 Bd4 13.Kf1 Kg8 14.Qd2
 22  01:05   419,084k  6,438k  +1.46  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Rb4 6.Rfc1 Nc7 7.Ra2 Ba6 8.Bf4 Bxe2 9.Qxe2 Kg8 10.Bxe5 Bxe5 11.Nd3 Bd4+ 12.Kh1 Bxc3 13.bxc3 Rb3 14.c4 Qd7
 22  01:05   419,084k  6,438k  +1.46  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Rb4 6.Rfc1 Nc7 7.Ra2 Ba6 8.Bf4 Bxe2 9.Qxe2 Kg8 10.Bxe5 Bxe5 11.Nd3 Bd4+ 12.Kh1 Bxc3 13.bxc3 Rb3 14.c4 Qd7
 23-  01:15   486,253k  6,453k  +1.38  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Rb4 6.Rfc1 Nc7 7.Ra2 Ba6 8.Bf4 Bxe2 9.Qxe2 Kg8 10.Bxe5 Bxe5 11.Nd3 Bd4+ 12.Kh1 Bxc3 13.bxc3 Rb3 14.c4 Qd7
 23  01:44   684,914k  6,547k  +1.39  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Rb4 6.Rfc1 Nc7 7.Ra2 Nc4 8.Bxc4 Rxc4 9.Rca1 Kg8 10.Ra3 Qd7 11.Ra7 Kh7 12.Qe2 Rb4 13.R1a3 Rb7 14.Rxb7 Bxb7 15.Ra7 Bc8
 23  01:44   684,914k  6,547k  +1.39  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Rb4 6.Rfc1 Nc7 7.Ra2 Nc4 8.Bxc4 Rxc4 9.Rca1 Kg8 10.Ra3 Qd7 11.Ra7 Kh7 12.Qe2 Rb4 13.R1a3 Rb7 14.Rxb7 Bxb7 15.Ra7 Bc8
 24-  02:10   855,638k  6,560k  +1.31  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Rb4 6.Rfc1 Nc7 7.Ra2 Nc4 8.Bxc4 Rxc4 9.Rca1 Kg8 10.Ra3 Qd7 11.Ra7 Kh7 12.Qe2 Rb4 13.R1a3 Rb7 14.Rxb7 Bxb7 15.Ra7 Bc8
 24-  03:53   1,550,068k  6,648k  +1.15  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Rb4 6.Rfc1 Nc7 7.Ra2 Nc4 8.Bxc4 Rxc4 9.Rca1 Kg8 10.Ra3 Qd7 11.Ra7 Kh7 12.Qe2 Rb4 13.R1a3 Rb7 14.Rxb7 Bxb7 15.Ra7 Bc8
 24  05:17   2,067,706k  6,503k  +1.21  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Reb7 6.Ra2 Kg8 7.Rfa1 Nc7 8.Kg2 f5 9.gxf6 Bxf6 10.Bg5 Nf7 11.Bxf6 Qxf6 12.Rh1 Bd7 13.f4 Kg7 14.Kf1 Nh6 15.Nd3 Bg4 16.Ke1 Qd4 17.Bxg4 hxg4
 24  05:17   2,067,706k  6,503k  +1.21  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Reb7 6.Ra2 Kg8 7.Rfa1 Nc7 8.Kg2 f5 9.gxf6 Bxf6 10.Bg5 Nf7 11.Bxf6 Qxf6 12.Rh1 Bd7 13.f4 Kg7 14.Kf1 Nh6 15.Nd3 Bg4 16.Ke1 Qd4 17.Bxg4 hxg4
 25  06:43   2,631,356k  6,517k  +1.17  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Reb7 6.Ra2 Kg8 7.Rfa1 Nc7 8.Kg2 Bd7 9.Bf4 f5 10.Nd3 Nf7 11.e5 Bxe5 12.Bxe5 Nxe5 13.Nxe5 dxe5 14.Bc4 Rb4 15.Qe2 R8b6 16.d6+ Ne6
 25  07:53   3,092,353k  6,538k  +1.17  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Reb7 6.Ra2 Kg8 7.Rfa1 Nc7 8.Kg2 Bd7 9.Bf4 f5 10.Nd3 Nf7 11.e5 Bxe5 12.Bxe5 Nxe5 13.Nxe5 dxe5 14.Bc4 Rb4 15.Qe2 R8b6 16.d6+ Ne6
 26-  10:05   3,970,208k  6,556k  +1.09  2.Nxb5 Ne5 3.Nc3 h5 4.g5 Ne8 5.0-0 Reb7 6.Ra2 Kg8 7.Rfa1 Nc7 8.Kg2 Bd7 9.Bf4 f5 10.Nd3 Nf7 11.e5 Bxe5 12.Bxe5 Nxe5 13.Nxe5 dxe5 14.Bc4 Rb4 15.Qe2 R8b6 16.d6+ Ne6
Up Topic The Rybka Lounge / Computer Chess / Stockfish evaluations become so volatile

Powered by mwForum 2.27.4 © 1999-2012 Markus Wichitill