Umpire: E. B. Cook
2 pr. ‘W. King’ (A la mémoire de Szen)
Two of the problems of the second prize winner ‘W. King’ were later published in American Chess-Nuts (1868) under S. Loyd’s name as problems 476 and 412, and were also published in Chess Strategy as problems 474 (p. 237) and 284 (p. 151).
Additionally, some of the problems from the sets Stratagems and Toils (problems 51, November and 55, December), and Dreams of Germany (Chess Monthly, vol. II (1858), January, p. 27; corr., December, p. 386) also reappeared in American Chess-Nuts under Loyd's name, as well as in Chess Strategy. (The set Dreams of Germany is not in the list of sets in Chess Monthly, although a set Dreams of the Rhine is mentioned.)
The S. Loyd #4 may be misprinted. Problem 365, American Chess-Nuts (1868), p. 256, exchanges the positions of black Pawn f4 and black Bishop f6. While it seems unlikely that E. B. Cook would have failed to discover this fault if it had been present in the transcription he examined, no mention of a misprint has been found in the consulted copies of Chess Monthly, nor have an earlier and correct reprint been found either.
Solutions for the problems below were not found in the copies of Chess Monthly used. Instead, additional sources (as cited) were consulted. In two cases, no authoritiative key moves were found: they instead have computer solution key moves in brackets.
As regards section B, T. M. Brown complained in The Clipper (1858-01-30) that his set Fortune knocks once at every man’s door (problems 98 and 99) was not given an award.
E. B. Cook responded (The Clipper, 1858-02-14) that the set published in The Clipper did not correspond with the transcript received by him. In the following issue (1858-02-20) he specifies that in this transcript (which is described as certified by Brown as to its correctness) the a2 pawn of the s#12 is white, not black as in the diagram published in Clipper.
Howewer, the s#12 was also published as problem 60, Chess Monthly (January, 1858), p. , in which the mentioned pawn is indeed black, possibly indicating a transcription error. No further information has been found.
1 Prize: S. Loyd
Key: 1. Ng4+
Source: 45, Chess Monthly (Nov., 1857), p. ;
68, Loyd: Chess Strategy, p. 43.
Key: [1. Rxf4] [*] = Faulty: Multiple key moves
Source: 46, Chess Monthly (Nov., 1857), p. 
Note: This problem may be misprinted (see notes).
Key: [1. Qh6+]
Source: 47, Chess Monthly (Nov., 1857), p. 
2 Prize: ‘W. King’ (pseud. for S. Loyd)
Key: 1. Bc7
Source: Source: 48, Chess Monthly (Nov., 1857), p. ; 474, Loyd: Chess Strategy, p. 237
Key: 1. Qa5+
Source: 49, Chess Monthly (Nov., 1857), p. ; 284, Loyd: Chess Strategy, p. 151
Key: [1. Qf3+]
Source: 49, Chess Monthly (Nov., 1857), p.