I dont know if I am mad or sad or laughing or disgusted or

[kgburcham]

[d] r1b2rk1/pp4bp/2p3p1/4q2n/NQPN1p1P/1P5n/P3PPB1/2BRRK2 b - -

Everyone here knows about SMP variation, it is old news.
I used to think it was cool, because I could use it to solve test positions that no one else was solving.
Now I don't know if I just think it is so stupid, it is funny, or if I am mad that I have purchased software that is broken with SMP variations, anyway.

So here is another crazy example.
I read where Richard talked about Critter in this position so I wanted to find out for myself.
On the 6 core pc, I just loaded windows 8, so I did not have Critter loaded yet.
On the first run I get this:

Using 6 thread(s), 4096 MB hash LP=on
Engine: Critter 1.6a 64-bit (4096 MB)
by Richard Vida
13/42 0:01 -1.69++ 1...f3 2.Nxf3 Qg3 3.Qc5 b6 4.Qe3 Qg4 5.Qe7 Bf5 6.Qd6 N5f4 7.Bxf4 Nxf4 8.Bh1 Rae8 9.Rd2 Re6 10.Qc7 Bf6 11.Qxa7 Rfe8 12.Qxb6 Qh3+ 13.Kg1 Nxe2+ 14.Rdxe2 Rxe2 (7.060.002) 4563
13/44 0:01 -1.98++ 1...f3 2.Nxf3 Qg3 3.Qc5 b6 4.Qe3 Qg4 5.Qe7 Bf5 6.Qd6 N5f4 7.Bxf4 Nxf4 8.Bh1 Rae8 9.e3 Nh3 10.Qg3 Qxg3 11.fxg3 Bg4 12.Ke2 Be5 13.c5 Bxg3 14.cxb6 axb6 (7.586.636) 4542
13/44 0:01 -2.40++ 1...f3 2.Nxf3 Qg3 3.Qc5 b6 4.Qe3 Qg4 5.Qe7 Bf5 6.Qd6 N5f4 7.Bxf4 Nxf4 8.Bh1 Rae8 9.e3 Nh3 10.Qg3 Qxg3 11.fxg3 Bg4 12.Ke2 Be5 13.c5 Bxg3 14.cxb6 axb6 (8.552.740) 4546
13/46 0:02 -3.04++ 1...f3 2.Nxf3 Qg3 3.Qc5 b6 4.Qe3 Qg4 5.Qe7 Bf5 6.Qd6 N5f4 7.Bxf4 Nxf4 8.Bh1 Rae8 9.e3 Nh3 10.Qg3 Qxg3 11.fxg3 Bg4 12.Ke2 Be5 13.c5 Bxg3 14.cxb6 axb6 (10.586.399) 4768
13/46 0:02 -3.47 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 Bxf3 5.Rxf3 Rxf3 6.exf3 Qh2 7.Bxh3 Qh1+ 8.Ke2 Re8+ 9.Be3 Nf4+ 10.Kd2 Rd8+ 11.Qd5+ Rxd5+ 12.cxd5 Qxf3 13.Be6+ Nxe6 14.dxe6 Qd5+ (12.907.077) 5045
14/46 0:02 -3.47 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 Bxf3 5.Rxf3 Rxf3 6.exf3 Qh2 7.Bxh3 Qh1+ 8.Ke2 Re8+ 9.Be3 Nf4+ 10.Kd2 Rd8+ 11.Qd5+ Rxd5+ 12.cxd5 Qxf3 13.Be6+ Nxe6 14.dxe6 Qd5+ (14.140.335) 5241
15/48 0:03 -3.69++ 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 Bxf3 5.Rxf3 Rxf3 6.exf3 Qh2 7.Bxh3 Qh1+ 8.Ke2 Re8+ 9.Be6+ Rxe6+ 10.Be3 Nf4+ 11.Kd2 Qxf3 12.Nc3 b6 13.Qg5 Rd6+ 14.Kc2 Nd3 (19.097.405) 5894
15/59 0:03 -4.01++ 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 Bxf3 5.Rxf3 Rxf3 6.exf3 Qh2 7.Bxh3 Qh1+ 8.Ke2 Re8+ 9.Be6+ Rxe6+ 10.Be3 Nf4+ 11.Kd2 Qxf3 12.Nc3 b6 13.Qg5 Rd6+ 14.Kc2 Nd3 (26.044.741) 6652
15/59 0:05 -4.49++ 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 Bxf3 5.Rxf3 Rxf3 6.exf3 Qh2 7.Bxh3 Qh1+ 8.Ke2 Re8+ 9.Be6+ Rxe6+ 10.Be3 Nf4+ 11.Kd2 Qxf3 12.Nc3 b6 13.Qg5 Rd6+ 14.Kc2 Nd3 (38.230.592) 7291
15/59 0:07 -5.20 1...f3 2.Nxf3 Qg3 3.Qxf8+ Bxf8 4.Be3 Bg4 5.Nc5 Bxc5 6.Bxc5 Bxf3 7.exf3 Qh2 8.Bxh3 Qxh3+ 9.Kg1 Qxf3 (56.862.253) 7815
16/59 0:09 -5.52 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 b6 5.Nxb6 axb6 6.Qe3 Rae8 7.Qxb6 Bxf3 8.Rxf3 Rxf3 9.exf3 Rxe1+ 10.Kxe1 Qxg2 11.Qd8+ Bf8 12.Bh6 Qxf2+ 13.Kd1 Qxf3+ 14.Kd2 Qf2+ (88.234.775) 8872
17/59 0:12 -5.48 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 b6 5.Nxb6 axb6 6.Qe3 Rae8 7.Qxb6 Bxf3 8.Rxf3 Rxf3 9.exf3 Rxe1+ 10.Kxe1 Qxg2 11.Qd8+ Bf8 12.Bh6 Qxf2+ 13.Kd1 Qxf3+ 14.Kc2 Ng7 (112.749.281) 9337
18/59 0:21 -5.54 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 b6 5.Nxb6 axb6 6.Qe3 Rae8 7.Qxb6 Bxf3 8.Rxf3 Rxf3 9.exf3 Rxe1+ 10.Kxe1 Qxg2 11.Qd8+ Bf8 12.Bh6 Qxf2+ 13.Kd1 Qxf3+ 14.Kc2 Ng7 (225.431.700) 10730
19/64 0:36 -5.88++ 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 b6 5.Nxb6 axb6 6.Qe3 Rae8 7.Qxb6 Bxf3 8.Rxf3 Rxf3 9.exf3 Rxe1+ 10.Kxe1 Qxg2 11.Qd8+ Bf8 12.Bh6 Qxf2+ 13.Kd1 Qxf3+ 14.Kc2 Ng7 (416.054.591) 11416
19/64 0:54 -6.07 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 b6 5.Red1 Rae8 6.Qe3 Rxe3 7.Bxe3 Qc7 8.Bxh3 Bxh3+ 9.Ke1 Bg4 10.Nc3 Bf5 11.Rd4 Bxd4 12.Bxd4 Rd8 13.Rd2 Re8 14.Rd1 Nf4 (643.635.892) 11706
20/64 1:30 -6.24 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 b6 5.Red1 Rae8 6.Qe3 Rxe3 7.Bxe3 Qc7 8.Bxh3 Bxh3+ 9.Ke1 Bg4 10.Nc3 Bf5 11.Rd4 Bxd4 12.Rxd4 Rd8 13.Rxd8+ Qxd8 14.Bg5 Qd6 (1.096.333.208) 12138
21/65 3:08 -6.55 1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 b6 5.Red1 Rae8 6.Qe3 Rxe3 7.Bxe3 Qc7 8.Bxh3 Bxh3+ 9.Ke1 Bg4 10.Nc3 Bf5 11.Rd4 Bxd4 12.Rxd4 Rd8 13.Rxd8+ Qxd8 14.c5 bxc5 (2.385.113.955) 12627
best move: f4-f3 time: 4:59.922 min n/s: 12.818.981 nodes: 3.837.567.213

Here is 12 core on first run:
Using 12 thread(s), 4096 MB hash LP=on
Engine: Critter 1.6a 64-bit (4096 MB)
by Richard Vida
11/39 0:01 -2.08++ 1...Nxf2 2.Kxf2 Re8 3.Kg1 (3.681.725) 2317
11/39 0:02 -2.98 1...Nxf2 2.Nf3 Nh3 3.Bxh3 Bxh3+ 4.Kg1 Qf5 5.Nh2 Ng3 6.c5 Rae8 7.Qc4+ Qf7 8.Qxf7+ Rxf7 9.Kf2 Ne4+ 10.Kg1 (6.075.324) 2347
12/39 0:02 -2.79-- 1...Nxf2 2.Nf3 Nh3 3.Bxh3 Bxh3+ 4.Kg1 Qf5 5.Nh2 Ng3 6.c5 Rae8 7.Qc4+ Qf7 8.Qxf7+ Rxf7 9.Kf2 Ne4+ 10.Kg1 (6.184.164) 2329
12/39 0:02 -2.52-- 1...Nxf2 2.Nf3 Nh3 3.Bxh3 Bxh3+ 4.Kg1 Qf5 5.Nh2 Ng3 6.c5 Rae8 7.Qc4+ Qf7 8.Qxf7+ Rxf7 9.Kf2 Ne4+ 10.Kg1 (6.193.352) 2308
12/39 0:02 -2.11-- 1...Nxf2 2.Nf3 Nh3 3.Bxh3 Bxh3+ 4.Kg1 Qf5 5.Nh2 Ng3 6.c5 Rae8 7.Qc4+ Qf7 8.Qxf7+ Rxf7 9.Kf2 Ne4+ 10.Kg1 (6.213.593) 2288
12/39 0:02 -1.50-- 1...Nxf2 2.Nf3 Nh3 3.Bxh3 Bxh3+ 4.Kg1 Qf5 5.Nh2 Ng3 6.c5 Rae8 7.Qc4+ Qf7 8.Qxf7+ Rxf7 9.Kf2 Ne4+ 10.Kg1 (6.265.879) 2284
12/39 0:02 -0.58-- 1...Nxf2 2.Nf3 Nh3 3.Bxh3 Bxh3+ 4.Kg1 Qf5 5.Nh2 Ng3 6.c5 Rae8 7.Qc4+ Qf7 8.Qxf7+ Rxf7 9.Kf2 Ne4+ 10.Kg1 (6.443.713) 2272
12/42 0:03 -2.13 1...Nxf2 2.Kxf2 f3 3.Bxf3 Qg3+ 4.Ke3 Rd8 5.Qe7 Bf6 6.Qe4 Rxd4 7.Rxd4 Bf5 8.Red1 Bxe4 9.Rxe4 Qh2 10.Rh1 Qd6 11.Bxh5 gxh5 12.Rg1+ Kf7 13.Kf3 Qh2 14.Rg2 Qh3+ (8.309.467) 2143
13/45 0:04 -2.00-- 1...Nxf2 2.Kxf2 f3 3.Bxf3 Qg3+ 4.Ke3 Rd8 5.Qe7 Bf6 6.Qe4 Rxd4 7.Rxd4 Bf5 8.Red1 Bxe4 9.Rxe4 Qh2 10.Rh1 Qd6 11.Bxh5 gxh5 12.Rg1+ Kf7 13.Kf3 Qh2 14.Rg2 Qh3+ (13.036.409) 2915
13/45 0:05 -1.80-- 1...Nxf2 2.Kxf2 f3 3.Bxf3 Qg3+ 4.Ke3 Rd8 5.Qe7 Bf6 6.Qe4 Rxd4 7.Rxd4 Bf5 8.Red1 Bxe4 9.Rxe4 Qh2 10.Rh1 Qd6 11.Bxh5 gxh5 12.Rg1+ Kf7 13.Kf3 Qh2 14.Rg2 Qh3+ (19.025.716) 3724
13/49 0:05 -2.26++ 1...Nxf2 2.Kxf2 f3 3.Bxf3 Qg3+ 4.Ke3 Rd8 5.Qe7 Bf6 6.Qe4 Rxd4 7.Rxd4 Bf5 8.Red1 Bxe4 9.Rxe4 Qh2 10.Rh1 Qd6 11.Bxh5 gxh5 12.Rg1+ Kf7 13.Kf3 Qh2 14.Rg2 Qh3+ (22.549.774) 3911
13/54 0:06 -2.46++ 1...Nxf2 2.Kxf2 f3 3.Bxf3 Qg3+ 4.Ke3 Rd8 5.Qe7 Bf6 6.Qe4 Rxd4 7.Rxd4 Bf5 8.Red1 Bxe4 9.Rxe4 Qh2 10.Rh1 Qd6 11.Bxh5 gxh5 12.Rg1+ Kf7 13.Kf3 Qh2 14.Rg2 Qh3+ (24.344.525) 3973
13/64 0:07 -2.37 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd3 Nf4+ 9.Kc2 Qf2+ 10.Rd2 Qxe1 11.Bc3 Ne2 12.Rd1 Qf2 13.Rd2 Bh6 14.Nxe2 Bf5+ (26.747.258) 3774
14/64 0:07 -2.23-- 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd3 Nf4+ 9.Kc2 Qf2+ 10.Rd2 Qxe1 11.Bc3 Ne2 12.Rd1 Qf2 13.Rd2 Bh6 14.Nxe2 Bf5+ (27.482.494) 3755
14/64 0:07 -2.52++ 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd3 Nf4+ 9.Kc2 Qf2+ 10.Rd2 Qxe1 11.Bc3 Ne2 12.Rd1 Qf2 13.Rd2 Bh6 14.Nxe2 Bf5+ (30.968.850) 3954
14/64 0:07 -2.44 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd3 Nf4+ 9.Kc2 Qf2+ 10.Rd2 Qxe1 11.Rd1 Bf5+ 12.Qxf5 Ng2 13.Rxe1 Nxe1+ 14.Kb1 gxf5 (31.555.715) 3983
15/64 0:08 -2.29-- 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd3 Nf4+ 9.Kc2 Qf2+ 10.Rd2 Qxe1 11.Rd1 Bf5+ 12.Qxf5 Ng2 13.Rxe1 Nxe1+ 14.Kb1 gxf5 (32.802.027) 3985
15/64 0:08 -2.33 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd3 Nf4+ 9.Kc2 Qf2+ 10.Rd2 Qxe1 11.Rd1 Bf5+ 12.Qxf5 Qf2+ 13.Rd2 Qxd2+ 14.Kxd2 gxf5 (35.553.144) 4117
16/64 0:09 -2.18-- 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd3 Nf4+ 9.Kc2 Qf2+ 10.Rd2 Qxe1 11.Rd1 Bf5+ 12.Qxf5 Qf2+ 13.Rd2 Qxd2+ 14.Kxd2 gxf5 (43.495.530) 4649
16/64 0:10 -2.47++ 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd3 Nf4+ 9.Kc2 Qf2+ 10.Rd2 Qxe1 11.Rd1 Bf5+ 12.Qxf5 Qf2+ 13.Rd2 Qxd2+ 14.Kxd2 gxf5 (52.599.041) 5109
16/64 0:11 -2.69++ 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd3 Nf4+ 9.Kc2 Qf2+ 10.Rd2 Qxe1 11.Rd1 Bf5+ 12.Qxf5 Qf2+ 13.Rd2 Qxd2+ 14.Kxd2 gxf5 (61.537.363) 5544
16/64 0:12 -2.81 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qa5 b6 14.Qa6 Qxb4+ (70.819.605) 5769
17/64 0:15 -2.81 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qa5 b6 14.Qa6 Qxb4+ (111.990.838) 7400
18/64 0:19 -2.81 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qa5 b6 14.Qa6 Qxb4+ (179.851.133) 9459
19/66 0:28 -2.98++ 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qa5 b6 14.Qa6 Qxb4+ (336.463.645) 11743
19/69 0:39 -3.25++ 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qa5 b6 14.Qa6 Qxb4+ (494.638.135) 12670
19/69 0:55 -3.64++ 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qa5 b6 14.Qa6 Qxb4+ (773.257.949) 13961
19/69 0:59 -3.59 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qxa7 Qxb4+ 14.Kc2 Qxc4+ (827.045.014) 13977
20/69 1:12 -3.38 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qxa7 Qxb4+ 14.Kc2 Qxc4+ (1.104.352.081) 15186
21/69 1:43 -3.59++ 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qxa7 Qxb4+ 14.Kc2 Qxc4+ (1.717.505.677) 16621
21/74 2:50 -3.81 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rd2 Bxd2 11.Kxd2 Nf4 12.Qg5 Qf2+ 13.Kc3 Qe3+ 14.Kb4 Nd3+ (3.051.122.595) 17873
22/74 5:21 -4.03 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qa5 b6 14.Qa6 Qxb4+ (6.293.601.577) 19545
23/74 8:09 -3.99 1...Nxf2 2.Kxf2 f3 3.Bxf3 Bh3 4.Qc5 Qg3+ 5.Ke3 Rad8 6.Bb2 Rxf3+ 7.exf3 Re8+ 8.Kd2 Bh6+ 9.Kc2 Rxe1 10.Rxe1 Qxe1 11.b4 Qd2+ 12.Kb3 Bf8 13.Qa5 b6 14.Qa6 Qxb4+ (10.207.031.979) 20850
23/74 11:30 -4.28++ 1...f3 2.Nxf3 Qe4 3.Nc5 Qxh4 4.Be3 Qg4 5.Nd3 N5f4 6.Nxf4 Nxf4 7.Bxf4 Qxf4 8.Qe7 Bc3 9.e3 Qf6 10.Qxf6 Bxf6 11.e4 Be6 12.Nd4 (14.704.529.934) 21295
23/74 13:15 -4.66++ 1...f3 2.Nxf3 Qe4 3.Nc5 Qxh4 4.Be3 Qg4 5.Nd3 N5f4 6.Nxf4 Nxf4 7.Bxf4 Qxf4 8.Qe7 Bc3 9.e3 Qf6 10.Qxf6 Bxf6 11.e4 Be6 12.Nd4 (16.974.252.045) 21333
23/74 17:25 -5.22++ 1...f3 2.Nxf3 Qe4 3.Nc5 Qxh4 4.Be3 Qg4 5.Nd3 N5f4 6.Nxf4 Nxf4 7.Bxf4 Qxf4 8.Qe7 Bc3 9.e3 Qf6 10.Qxf6 Bxf6 11.e4 Be6 12.Nd4 (22.410.010.616) 21428
23/74 22:19 -5.90 1...f3 2.Nxf3 Ng3+ 3.fxg3 Qxg3 4.Be3 Bg4 5.Qc5 Bxf3 6.exf3 Rxf3+ 7.Bxf3 Qxf3+ 8.Bf2 Nf4 9.Qg5 Rf8 10.Rd8 Qh1+ 11.Bg1 Qh3+ 12.Kf2 Bd4+ 13.Rxd4 Ne6+ 14.Ke2 Nxg5 (28.939.832.826) 21604
24/81 25:35 -6.11 1...f3 2.Nxf3 Ng3+ 3.fxg3 Qxg3 4.Be3 Bg4 5.Qc5 Bxf3 6.exf3 Rxf3+ 7.Bxf3 Qxf3+ 8.Bf2 Nf4 9.Qg5 Rf8 10.Rd8 Qh1+ 11.Bg1 Qh3+ 12.Kf2 Bd4+ 13.Rxd4 Ne6+ 14.Ke2 Nxg5 (33.317.427.432) 21701
best move: f4-f3 time: 32:42.782 min n/s: 21.974.108 nodes: 43.123.396.566

[kgburcham]

To a person that does not understand the internal workings of an engine, I would have to conclude that this software is broken.
I would think that this could be improved.
Of course I am sure that most are saying this is just the way it is.
I dont except this, I think someone will come along someday and fix the SMP variation problem. Also we know that all programs have this same issue. I would like to understand what is going on in the engine that we have so much variation and how these programs can overlook bm.
kgburcham

[Dr.Wael Deeb]

To a person that does not understand the internal workings of an engine, I would have to conclude that this software is broken.
I would think that this could be improved.
Of course I am sure that most are saying this is just the way it is.
I dont except this, I think someone will come along someday and fix the SMP variation problem. Also we know that all programs have this same issue. I would like to understand what is going on in the engine that we have so much variation and how these programs can overlook bm.
kgburcham

It's crazy indeed nad it will shake your faith in the accuracy of the engine's evaluation.....

Did you try this position loading the chess engine as SP

Just curious.........

[yanquis1972]

hmm. i at least don't see it as a problem. more like what one might label a 'quirk'. i suppose if you play competitive comp chess, as i believe i've seen you mention you do, you might view this as potentially unfair, in that (eg) when i just ran this w/ my quad, critter found the move in only 2 mins, as opposed to the nearly 12 for your uberhardware.

i'd still counter that this can be seen as more of a quirk than anything...it may level the playing field to a slight degree, but it i think it's nice to know there will be some variety. and it makes games a little more interesting, no? and finally, i''ve always assumed that, with more cores, the broader the search, & thus on average, the more likely a move is to be found at lower depth than usual. so you still retain an advantage in that regard (if this is even true).

[kgburcham]

To a person that does not understand the internal workings of an engine, I would have to conclude that this software is broken.
I would think that this could be improved.
Of course I am sure that most are saying this is just the way it is.
I dont except this, I think someone will come along someday and fix the SMP variation problem. Also we know that all programs have this same issue. I would like to understand what is going on in the engine that we have so much variation and how these programs can overlook bm.
kgburcham

It's crazy indeed nad it will shake your faith in the accuracy of the engine's evaluation.....
Did you try this position loading the chess engine as SP
Just curious.........

No I did not try with one core.
kgburcham

[ernest]

Everyone here knows about SMP variation

Hi Kim,

Dualcore, 1024 MB hash, 1st try:

Code: Select all

Analysis by Critter 1.6a 32-bit gtb:
1...a5 2.Qc5 Bg4 3.Qxe5 Bxe5 4.Nb6 Rad8 
  +/=  (0.29)   Depth: 6/12   00:00:00  13kN
1...Re8 2.e4 Qf6 3.Nf3 b6 4.Bb2 
  =  (0.25)   Depth: 6/12   00:00:00  17kN
1...Qf6 2.Nf3 a5 3.Qd6 Qxd6 4.Rxd6 Bf5 
  =  (0.00)   Depth: 6/12   00:00:00  30kN
1...Qf6 2.Nf3 Re8 3.Bb2 Bf8 4.Qc3 Bg7 5.Qxf6 Bxf6 
  =  (0.08)   Depth: 7/12   00:00:00  39kN
1...Qf6 2.Nf3 Re8 3.Bb2 Bf8 4.Qc3 Qxc3 5.Bxc3 Bf5 
  =  (0.08)   Depth: 8/14   00:00:00  48kN
1...Qf6 2.Nf3 Qf5 3.Bb2 Bxb2 4.Nxb2 c5 5.Qc3 Nf6 6.Nd3 Ne4 
  =  (0.08)   Depth: 9/20   00:00:00  95kN
1...Re8 2.e4 Qf6 3.Nf3 b6 4.Bb2 
  =  (0.00 !)   Depth: 9/20   00:00:00  109kN
1...Re8 2.e4 Qc7 3.Nf3 Bg4 4.Nc5 Qe7 5.a3 Bxf3 6.Bxf3 Qxh4 
  =  (0.00)   Depth: 9/20   00:00:00  141kN
1...Re8 2.e4 Qc7 3.Nf3 Bg4 4.Nc5 Qe7 5.a3 Bxf3 6.Bxf3 Qxh4 
  =  (-0.08 !)   Depth: 10/22   00:00:00  218kN
1...Re8 2.e4 Bg4 3.Nf3 Qc7 4.Nc5 Qe7 5.Nd3 Qxb4 6.Nxb4 Bc3 7.Bd2 Bf6 
  =  (-0.05)   Depth: 10/23   00:00:00  295kN
1...Re8 2.e4 Bg4 3.Nf3 Qc7 4.Nc5 Qe7 5.Nd3 Qxb4 6.Nxb4 Rad8 7.Nd3 b6 8.c5 Rd7 
  =  (-0.13 !)   Depth: 11/27   00:00:00  446kN
1...Re8 2.e4 Bg4 3.Nf3 Qc7 4.Qd6 Qxd6 5.Rxd6 Bf8 6.Rdd1 Rad8 7.Rxd8 Rxd8 8.Bb2 Bb4 9.Rc1 c5 
  =  (-0.18)   Depth: 11/27   00:00:00  641kN
1...Nxf2 2.Kxf2 Re8 3.Nf3 
  =/+  (-0.26 !)   Depth: 11/33   00:00:00  895kN
1...Nxf2 2.Kxf2 f3 3.exf3 Qg3+ 4.Kg1 Bxd4+ 5.Rxd4 Bh3 6.Re2 Rae8 
  =  (0.00)   Depth: 11/33   00:00:00  1355kN
1...Re8 2.e4 Bg4 3.Nf3 Qc7 4.Qd6 Qxd6 5.Rxd6 Bf8 6.Rdd1 Rad8 7.Rxd8 Rxd8 8.Bb2 Bb4 9.Rc1 b6 10.Bc3 Bxc3 11.Nxc3 Bxf3 12.Bxf3 
  =  (-0.20)   Depth: 11/33   00:00:00  1404kN
1...Re8 2.e4 Bg4 3.Nf3 Qc7 4.Qd6 Qxd6 5.Rxd6 Bf8 6.Rdd1 Rad8 7.Rxd8 Rxd8 8.Bb2 Bb4 9.Rc1 Be7 10.Bc3 Nf6 
  =  (-0.19)   Depth: 12/33   00:00:00  1639kN
1...f3 2.Nxf3 Qe4 3.Nc5 Qxh4 4.Be3 Qe7 5.Qd2 N3f4 6.Qd6 Qxd6 7.Rxd6 b6 8.Ne4 
  =/+  (-0.29 !)   Depth: 12/33   00:00:01  2264kN
1...Re8 2.e4 Bg4 3.Nf3 Qc7 4.Qd6 Qxd6 5.Rxd6 Bf8 6.Rdd1 Rad8 7.Rxd8 Rxd8 8.Bb2 Bb4 9.Rc1 Be7 10.Bc3 Nf6 
  =  (-0.19)   Depth: 12/33   00:00:01  2616kN
1...Re8 2.e4 Bg4 3.Nf3 Qc7 4.Qd6 Qxd6 5.Rxd6 Bf8 6.Rdd1 Rad8 7.Rxd8 Rxd8 8.Bb2 Bb4 9.Rc1 Be7 10.Bc3 Nf6 
  =  (-0.19)   Depth: 13/33   00:00:01  3532kN
1...f3 2.Nxf3 Qg3 3.Be3 Bg4 4.Qxb7 Bxf3 5.exf3 Qh2 6.Bxh3 Ng3+ 
  =/+  (-0.28 !)   Depth: 13/38   00:00:02  3849kN
1...f3 2.Nxf3 Qg3 3.Be3 Bg4 4.Qxb7 Bxf3 5.exf3 Qh2 6.Bxh3 Ng3+ 
  =/+  (-0.41 !)   Depth: 13/38   00:00:02  3939kN
1...f3 2.Nxf3 Qg3 3.Be3 Bg4 4.Qxb7 Bxf3 5.exf3 Qh2 6.Bxh3 Ng3+ 
  =/+  (-0.60 !)   Depth: 13/48   00:00:02  4315kN
1...f3 2.Nxf3 Qg3 3.Be3 Bg4 4.Qxb7 Bxf3 5.exf3 Qh2 6.Bxh3 Ng3+ 
  -/+  (-0.89 !)   Depth: 13/48   00:00:02  4730kN
1...f3 2.Nxf3 Qg3 3.Be3 Bg4 4.Rd2 Bxf3 5.exf3 Qh2 6.Bxh3 Qxh3+ 7.Kg1 Rxf3 8.Red1 Qg4+ 9.Kf1 Raf8 10.Qe7 Ng3+ 11.Ke1 Ne4 
  -/+  (-1.31 !)   Depth: 13/48   00:00:02  5212kN
1...f3 2.Nxf3 Qg3 3.Be3 Bg4 4.Rd2 Bxf3 5.exf3 Qh2 6.Bxh3 Qxh3+ 7.Kg1 Rxf3 8.Red1 Qg4+ 9.Kf1 Raf8 10.Qe7 Ng3+ 11.Ke1 Ne4 
  -+  (-1.95 !)   Depth: 13/48   00:00:03  6094kN
1...f3 2.Nxf3 Qg3 3.Be3 Bg4 4.Qxb7 Bxf3 5.exf3 Qh2 6.Rd7 Qg1+ 7.Ke2 Qxg2 8.Qxc6 Nxf2 9.Kd2 Nf6 10.Rxg7+ Kxg7 11.Qb7+ Kg8 12.Kc3 
  -+  (-2.90)   Depth: 13/50   00:00:05  11354kN
1...f3 2.Nxf3 Qg3 3.Be3 Bg4 4.Qxb7 Bxf3 5.exf3 Qh2 6.Rd7 Qg1+ 7.Ke2 Qxg2 8.Qxc6 Ng1+ 9.Kd3 Nxf3 10.Qd5+ Kh8 11.Re2 Ne5+ 12.Kc2 Qf1 
  -+  (-3.08 !)   Depth: 14/50   00:00:07  14348kN
1...f3 2.Nxf3 Qg3 3.Be3 Bg4 4.Qxb7 Bxf3 5.exf3 Qh2 6.Rd7 Qg1+ 7.Ke2 Qxg2 8.Qxc6 Ng1+ 9.Kd3 Nxf3 10.Qd5+ Kh8 11.Re2 Ne5+ 12.Kc2 Qf1 
  -+  (-3.35 !)   Depth: 14/50   00:00:08  17591kN
1...f3 2.Nxf3 Qg3 3.Be3 Bg4 4.Qxb7 Bxf3 5.exf3 Qh2 6.Rd7 Qg1+ 7.Ke2 Qxg2 8.Qxc6 Ng1+ 9.Kd3 Nxf3 10.Qd5+ Kh8 11.Re2 Ne5+ 12.Kc2 Qf1 
  -+  (-3.75 !)   Depth: 14/50   00:00:11  23347kN
1...f3 2.Nxf3 Qg3 3.Qc5 Bg4 4.Rd3 b6 5.Red1 Qxg2+ 6.Kxg2 bxc5 7.Rd6 N5f4+ 8.Bxf4 Nxf4+ 9.Kg3 Bh5 10.Re1 Rae8 11.e3 Ne2+ 12.Rxe2 Bxf3 13.Red2 Be5+ 14.Kh3 Bxd6 15.Rxd6 
  -+  (-3.88)   Depth: 14/50   00:00:14  29192kN

Other tries: indeed I get a battle between f3 and Nxf2 (and sometimes Re8), you can watch that with MultiPV.

[kgburcham]

Hi Ernest
I find smp variations aggravating.
How many bm are missed in games because of the smp problems?
I would think some day someone will come along that has the ability to improve this problem.
All of my life I have "fixed things" and made things better, so it is difficult for me to accept that this variation cannot be fixed.
kgburcham

[kbhearn]

Hi Ernest
I find smp variations aggravating.
How many bm are missed in games because of the smp problems?
I would think some day someone will come along that has the ability to improve this problem.
All of my life I have "fixed things" and made things better, so it is difficult for me to accept that this variation cannot be fixed.
kgburcham

You're looking at it the wrong way. SMP randomness is sometimes finding moves quickly that otherwise wouldn't be found for a great deal longer, not missing stuff that would otherwise be found.

[kgburcham]

Hi Ernest
I find smp variations aggravating.
How many bm are missed in games because of the smp problems?
I would think some day someone will come along that has the ability to improve this problem.
All of my life I have "fixed things" and made things better, so it is difficult for me to accept that this variation cannot be fixed.
kgburcham

You're looking at it the wrong way. SMP randomness is sometimes finding moves quickly that otherwise wouldn't be found for a great deal longer, not missing stuff that would otherwise be found.

What?
I don't understand.
You are looking at the positive examples of quick results.
There are many many examples that the program says, "yup I can find that position in 10 seconds" then set it up again clear hash, everything the same and it wont find it in 10 minutes, now if the score difference if just .2 then I am ok with that, but when the bm is a larger score and it still wont show it then I think someone should fix it.

[kbhearn]

The point is it's the quick result that's the 'bug' if anything, not the take forever result.