Author: Robert Hyatt
Date: 16:40:50 08/28/04
Go up one level in this thread
On August 28, 2004 at 18:40:43, martin fierz wrote:
>aloha!
>
>after all the cloning talk, here's something to test your favorite engine with:
>i played a weakish IM today and got the following position after 56...Qg6+
>57.Kf2:
>
>[D] 8/6kp/8/3p4/1P4q1/P4p2/5K2/4Q3 b - - 0 57
>
>it took me a couple of seconds to see that after 57...Qh4+ 58. Kf1 Qxe1+ 59.
>Kxe1 Kf6 black is completely winning due to the floating square (it's nice to
>see that reading dvoretzky is some good!) and so i played that and won :-)
>
>interestingly, when i entered this game in chessbase running fritz7 in the
>background, fritz didn't seem to see this at all within a minute or so. so
>question to all: how long does your favorite engine need to see the line ...Qh4+
>Kf1 Qxe1+ with a HUGE plus score (i.e. +9 or so - that is what my assessment of
>the position was after a couple of seconds...)?
>
>i don't want to claim that this is the only win, but it is by far the easiest
>one, and fritz 7 misses it completely.
>
>cheers
> martin
Crafty instantly says Qg2+ is +6 here, it sees the queen trade in a different
way than your check.
6 0.13 -5.61 1. ... Qg2+ 2. Ke3 f2 3. Qxf2 d4+ 4.
Ke2 d3+ 5. Ke3 Qxf2+ 6. Kxf2 Kf6 7.
a4
6-> 0.13 -5.61 1. ... Qg2+ 2. Ke3 f2 3. Qxf2 d4+ 4.
Ke2 d3+ 5. Ke3 Qxf2+ 6. Kxf2 Kf6 7.
a4
7 0.18 -5.53 1. ... Qg2+ 2. Ke3 Kf8 3. Qb1 Qe2+
4. Kf4 Qe4+ 5. Qxe4 dxe4 6. Ke3 h5
7. Kxe4
7-> 0.19 -5.53 1. ... Qg2+ 2. Ke3 Kf8 3. Qb1 Qe2+
4. Kf4 Qe4+ 5. Qxe4 dxe4 6. Ke3 h5
7. Kxe4
8 0.31 -5.45 1. ... Qg2+ 2. Ke3 Kf8 3. Qb1 Kg8 4.
Qf5 Qe2+ 5. Kf4 Qe4+ 6. Qxe4 dxe4 7.
Ke3 Kf7 8. Kxe4
8-> 0.35 -5.45 1. ... Qg2+ 2. Ke3 Kf8 3. Qb1 Kg8 4.
Qf5 Qe2+ 5. Kf4 Qe4+ 6. Qxe4 dxe4 7.
Ke3 Kf7 8. Kxe4
9 0.71 -5.45 1. ... Qg2+ 2. Ke3 Kf8 3. Qb1 Kg8 4.
Qf5 Qe2+ 5. Kf4 Qe4+ 6. Qxe4 dxe4 7.
Ke3 Kf7 8. a4 <HT>
9-> 0.80 -5.45 1. ... Qg2+ 2. Ke3 Kf8 3. Qb1 Kg8 4.
Qf5 Qe2+ 5. Kf4 Qe4+ 6. Qxe4 dxe4 7.
Ke3 Kf7 8. a4 <HT>
10 0.83 -1 1. ... Qg2+!!
10 1.92 -5.89 1. ... Qg2+ 2. Ke3 Kf8 3. Qb1 Qe2+
4. Kf4 Qe4+ 5. Qxe4 dxe4 6. Ke3 Ke7
7. a4 Ke6 8. Kxe4 f2
10-> 2.19 -5.89 1. ... Qg2+ 2. Ke3 Kf8 3. Qb1 Qe2+
4. Kf4 Qe4+ 5. Qxe4 dxe4 6. Ke3 Ke7
7. a4 Ke6 8. Kxe4 f2
11 2.22 -1 1. ... Qg2+!!
11 5.45 -6.72 1. ... Qg2+ 2. Ke3 Kf8 3. Qb1 Qe2+
4. Kf4 Qe4+ 5. Qxe4 dxe4 6. Ke3 Ke7
7. a4 Ke6 8. a5 Kd5 9. b5
11-> 6.28 -6.72 1. ... Qg2+ 2. Ke3 Kf8 3. Qb1 Qe2+
4. Kf4 Qe4+ 5. Qxe4 dxe4 6. Ke3 Ke7
7. a4 Ke6 8. a5 Kd5 9. b5
12 18.36 -6.63 1. ... Qg2+ 2. Ke3 Kf8 3. Qd2 d4+ 4.
Kd3 Qxd2+ 5. Kxd2 Ke7 6. a4 Kd6 7.
a5 h5 8. Kd3 Kd7 9. b5 f2
12-> 20.80 -6.63 1. ... Qg2+ 2. Ke3 Kf8 3. Qd2 d4+ 4.
Kd3 Qxd2+ 5. Kxd2 Ke7 6. a4 Kd6 7.
a5 h5 8. Kd3 Kd7 9. b5 f2
13 1:04 -6.55 1. ... Qg2+ 2. Ke3 Kf8 3. Qd2 d4+ 4.
Kd3 Qxd2+ 5. Kxd2 Ke7 6. a4 Kd7 7.
a5 Kc8 8. b5 h5 9. b6 <HT>
13-> 1:11 -6.55 1. ... Qg2+ 2. Ke3 Kf8 3. Qd2 d4+ 4.
Kd3 Qxd2+ 5. Kxd2 Ke7 6. a4 Kd7 7.
a5 Kc8 8. b5 h5 9. b6 <HT>
14 1:12 -1 1. ... Qg2+!!
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