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Subject: Junior 4.6 bugs

Author: Kai Lübke

Date: 03:56:27 06/15/98


Experimenting with Junior 4.6, I found bugs in the way the program
handles the following test positions:

Albillo 20: Ng4? with immediate "draw" though it's a mate in 9 (false
KNNKP endgame knowledge)
[I don't understand why Junior doesn't even *try* to search the position
here.]

Albillo 27: Be4 with immediate "mate in 2" though it's mate in 9
(doesn't see promotion to knight which
prolongs mate)

Killer 01 (8/5P1k/7p/6pP/5pP1/5PpK/6P1/8 w - - ): plays f8Q?? which is a
stalemate. Does not see
f8N! (for example) which easily wins for white

=> doesn't even consider underpromotion, just as if it didn't know it at
all!

---
Shep



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