The Retrograde Analysis Corner
Raymond Smullyan
Thanks to
Wei-Hwa Huang <whuang(at)ngwee.ugcs.caltech.edu> Richard Sabey <richard_8978_sabey(at)hotmail.com>
for providing this list of errata!
(Note: In the above mail addresses, please replace the "(at)" by the "@" sign!)
p.???, "..."
Original: 3qk2r/p2pbp1p/1pp2np1/2nBpb2/8/NP2PN1P/P2P1P1P/R2QK3
Revised: 3qk2r/p2pbp1p/bpp2np1/2nBp3/8/NP2PN1P/P2P1P1P/R2QK3
p.34, line 5
Original: "nor could any White piece--even if the unknown were White--"
Revised: "nor could any Black piece--even if the unknown were Black--"
p.37, line 5
Original: "Therefore the pawn on g3 did *not* come from g2."
Revised: "Therefore the pawn on g3 did *not* come from f2."
p.52, line 6
"The only way White can even *check* Black is with the knight on g4 either moving to h6 or capturing the knight on f6." Or Rh8+.
P.103, "Thoughts of a Logician"
Original: r3k3/P5P1/1P1P1P2/3PpK2/8/8/6B1/8
Revised: r3k3/B5P1/1P1P1P2/3PpK2/8/8/6B1/8
p.120, "A Remarkable Monochromatic"
Original: 8/3p1p2/8/7p/8/8/k3P1P1/1N1QK3
Revised: 8/3p1p2/8/7p/8/8/k3P1P1/1N1QKB2
p.126, "On Marston's Island"
According to p.126, the coded stipulation for problem II is:
AK 63--3,4,5 14--12,18,2,21; 16--12,4,17,5,22?
According to p.130, AK 14--12 decodes to "what".
According to p.138, the coded stipulation is:
68--12,2,14,22, 14--3,15,8,12,9.
The code book is the same as before, and 14--12 decodes to "in".
p.127, "On Marston's Island"
In puzzle III, a "?" (question mark) has been added to h6, presumably to aid the solver. The text already reveals that h6 has an unknown.
The correct diagram is
4k3/1p1pp1pp/2p2p2/8/4P3/3P4/PPP2PP1/4K3
but at least one edition wrongly has wPg3 instead of g2.
p145, Moriarty's promblems, M1
Original: 2B5/8/6p1/6Pk/3P2qb/3p4/3PB1P1/2NrNKQR
Revised: 2B5/8/6p1/6Pk/3P2qb/3p4/3PB3/2NrNKQR
