From the introduction, words are made by moving from adjacent letter to adjacent
letter vertically, horizontally, or diagonally; a letter may be returned to in
a word, but the same letter can't be used twice in a row.  The Boggle
board in the game played ended up with 16 different letters: ABEFGILMNOPRSTUY.
By clue 5, in forming the word BEST, Chad made two consecutive horizontal
moves; so he either went B-E-S in a straight line or E-S-T.  However, from the
word OFTEN in clue 2, the E and T must also touch, which they cannot do in the
second case.  We will solve the letter adjacencies first, then determine the
orientation later; so we put these letters on the Boggle board
arbitrarily as follows:
 
   BES   BES 
   .T.   ..T 
 
By clue 2, the N must be adjacent to both the T (ANT) and E (OFTEN); the N
must also touch the S (SNAG in clue 1).  The N must therefore fit in our
arbitrary arrangement as follows:
  
   BES   BES 
   .TN   .NT 
 
Given the word SLIT (1) and the first of our two possible arrangements, we
would have:
  
   BES. 
   .TNL 
   ..I. 
 
However, there is no way to form SULTAN in clue 1.  So, our second
arrangement from above is the only one possible:
  
   BES 
   .NT 
 
From SULTAN (1), the A must be adjacent to both N and T:
  
   BES   BES 
   .NT   .NT 
   .A.   ..A 
 
However, since the L must touch the S in SLIT (1) and touch the
A in LAMP (3), there is no way the first arrangement can work; and
the L must be added as
  
   BES. 
   .NTL 
   ..A. 
 
From SULTAN (1),
  
   BESU 
   .NTL 
   ..A. 
 
SLIT (1),
  
   BESU 
   .NTL 
   ..AI 
 
and OFTEN (2) we get
  
   BESU 
   .NTL 
   .FAI 
 
Since the G in SNAG (1) must go below A in what is the 4th row,
the Y and R in RYE in clue 4 fill out the other three rows:
  
   BESU 
   YNTL 
   RFAI 
 
There are three ways that the G in SNAG (1) can fit:
  
   BESU   BESU   BESU 
   YNTL   YNTL   YNTL 
   RFAI   RFAI   RFAI 
   .G..   ..G.   ...G 
 
Given the first possibility, the M and P in LAMP (3) would have to fit in
to the right of the G and the O in OFTEN (2) to the left--but MOAT (3)
cannot be made.  Trying the second arrangement, M and P from LAMP would be
to the left of G--but there would be no way to make OFTEN.  So the third
arrangement remains.  We try all arrangements of the M and P from LAMP with
O from OFTEN:
  
   BESU   BESU   BESU 
   YNTL   YNTL   YNTL 
   RFAI   RFAI   RFAI 
   OPMG   OMPG   PMOG 
 
Only the third one allows MOAT (3) to be made.  We now test the various
alternative orientations:
  
  BESU  USEB  BYRP  PRYB 
  YNTL  LTNY  ENFM  MFNE 
  RFAI  IAFR  STAO  OATS 
  PMOG  GOMP  ULIG  GILU 
 
  PMOG  GOMP  ULIG  GILU 
  RFAI  IAFR  STAO  OATS 
  YNTL  LTNY  ENFM  MFNE 
  BESU  USEB  BYRP  PRYB 
 
By clue 4, RYE was partly formed by an  upper left-to-lower right
diagonal move, so only two of the arrangements are possible:
  
  PRYB  PMOG 
  MFNE  RFAI 
  OATS  YNTL 
  GILU  BESU 
 
However, by clue 5, B wasn't in the upper-right-hand corner.  The
Boggle board was as follows:
  
  PMOG 
  RFAI 
  YNTL 
  BESU 
 
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