strelka fails in stability test

[Uri Blass]

Strelkla crashed after a minute of search and this result is reproducable

New game - Rybka 1.0 Beta 32-bit, Friend mode
[d]qqqqkqq1/1q4q1/8/8/8/8/8/QQQQKQQ1 w - - 0 1

Analysis by Strelka 1.8 UCI:

1.Qg1-e3+ Qg8-e6 2.Qd1-a4+ Qb7-c6 3.Qb1xb8 Qg7xa1
-+ (-25.82) Depth: 1 00:00:00
1.Qg1-e3+ Qg8-e6 2.Qf1xf8+ Qg7xf8 3.Qb1-g6+ Qb7-f7
-+ (-25.77) Depth: 2 00:00:00
1.Qc1-e3+ Qc8-e6 2.Qd1-h5+ Ke8-d7 3.Qb1xb7+ Qa8xb7 4.Qf1-d3+ Kd7-c8
-+ (-25.85) Depth: 3 00:00:01
1.Qd1-h5+ Qg7-f7 2.Qc1-e3+ Qd8-e7 3.Qf1xf7+ Qg8xf7 4.Qh5xf7+ Qf8xf7 5.Qa1-h8+ Ke8-d7 6.Qb1xb7+ Qa8xb7 7.Qh8xc8+ Qb8xc8 8.Qg1-g4+ Kd7-d6 9.Qg4-d4+ Kd6-c6 10.Qe3xe7 Qb7xe7+ 11.Ke1-d2
-+ (-27.19) Depth: 4 00:00:05
1.Qf1xf8+ Ke8xf8 2.Qa1xg7+ Qb7xg7 3.Qg1xg7+ Kf8xg7 4.Qb1-b2+ Qb8xb2 5.Qc1xb2+ Kg7-g6 6.Qb2-c2+ Qc8xc2 7.Qd1xc2+ Kg6-f6
-+ (-26.99) Depth: 5 00:00:11
1.Qf1xf8+ Ke8xf8 2.Qa1xg7+ Qb7xg7 3.Qg1xg7+ Kf8xg7 4.Qb1-b2+ Qb8xb2 5.Qc1xb2+ Kg7-g6 6.Qb2-c2+ Qc8xc2 7.Qd1xc2+ Kg6-f6 8.Qc2-c3+ Kf6-f5 9.Qc3-c5+ Kf5-f4
-+ (-27.01) Depth: 6 00:00:27 13012kN

(, 12.10.2007)

[genorb]

Hi Uri,

I didn't test Strelka, but Hiarcs 11.2 has problems with this kind of position.

Using your position, In Shredder Gui I cannot get any output from Hiarcs and in Arena I got this nonsense analysis (I selected white to play!!)

Hiarcs 11.2:
11/24 00:00 230.572 368.325 +0.05 Qg8f6 Qb1c3 Qg1f3 Qb8c6 Qf3e5+ Qc8f5 Qe5xc6+ Qb7xc6 Qc1f4 Qa8b8
12/24 00:01 407.573 352.267 0.00 Qg8f6 Qb1c3 Qg1f3 Qb8c6 Qf3e5+ Qc8f5 Qe5xc6+ Qb7xc6 Qc1f4 Qa8b8 Qa1b1
13/25 00:03 1.138.727 329.683 +0.02 Qb1c3 Qb8c6 Qg1f3 Qc8f5 Qf3h4 Qf5c8
14/26 00:08 2.648.563 313.291 +0.07 Qb1c3 Qb8c6 Qc1f4 Qc8f5 Qg1f3 Qg8f6 Qc3b5 Qa8c8 Qf3h4 Qf5g4
15/32 00:28 8.258.461 292.977 +0.02
15/32 00:29 8.613.921 293.080 +0.02 Qb8c6 Qb1c3 Qg8f6 Qg1f3 Qf6d5 Qf1c4 Qd5xc3+ Qd8d6+

Hiarcs 11.2 has also the same kind of problems with this position

[d]nnn5/nkn5/nnn5/8/8/5QQQ/5QKQ/5QQQ w - - 0 1