Author: Bruce Moreland
Date: 09:32:59 01/05/98
You can get this in EPD at:
http://www.mi.uni-koeln.de/~kluebke/chess/epd/VA.EPD
You can see it with graphical boards and tons of text at:
http://www.mygale.org/01/albillo/cmain.htm#tests
I would like to point out that position 10 is hopelessly cooked, and the
explanation for it has some bugs.
This is a simple mate in 10 with KQ vs K. The problems are that:
1) There are 22 solutions to this problem, almost anything white can do
is a correct answer.
2) The problem is given as a mate in 9, but this isn't true. A couple
of the programs tested give this as a mate in 9, but they are wrong.
This suite also makes me wonder about what kinds of things a suite
should be testing, but mainly I wanted to point out this one cook. It
might be interesting to discuss some of the other positions as well.
bruce
----------------
a b c d e f g h
+---+---+---+---+---+---+---+---+
8 | |///| |///| |///| |/K/| 8
+---+---+---+---+---+---+---+---+
7 |///| |///| |///| |/Q/| | 7
+---+---+---+---+---+---+---+---+
6 | |///| |///| |///| |///| 6
+---+---+---+---+---+---+---+---+
5 |///| |///| |///| |///| | 5
+---+---+---+---+---+---+---+---+
4 | |///| |///| |///| |///| 4
+---+---+---+---+---+---+---+---+
3 |///| |///| k |///| |///| | 3
+---+---+---+---+---+---+---+---+
2 | |///| |///| |///| |///| 2
+---+---+---+---+---+---+---+---+
1 |///| |///| |///| |///| | 1
+---+---+---+---+---+---+---+---+
a b c d e f g h
7K/6Q/8/8/8/3k w - - 0 1
1. Qf6 (Qe5, Qb2, Qa1, Qh6, Qf8, Qg6+, Qg5, Qg4, Qg3+, Qg2, Qg1, Qg8,
Qf7, Qe7,
Qd7+, Qc7, Qb7, Qa7, Qh7+, Kh7, Kg8) Kc2 (Kc4, Kd2) 2. Qd4 (Qf3, Kg7)
Kb3 3.
Kg7 (Kh7, Kg8) Kc2 4. Kf6 (Kg6, Kf7) Kb3 5. Ke5 (Kf5, Ke6) Kc2 6. Qc4+
(Ke4,
Kd5) Kb1 (Kd1, Kb2, Kd2) 7. Qe2 Ka1 (Kc1) 8. Kd4 Kb1 9. Kc3 Ka1 (Kc1)
10. Qb2#
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