L'idée de ce défi est de trouver tous les mots d'un dictionnaire sur une grille de lettres. Votre entrée doit provenir de stdin ou de la fonction arg et aura le format suivant:

[your dictionary as a list of space sep words]
[a grid of letters]

Example:

The cool car
looc
thea
jopr

Règles pour trouver un match

Une correspondance est valide si elle se trouve en diagonale, horizontalement ou verticalement sur le plateau (insensible à la casse). La direction n'a pas d'importance (par exemple les lookcorrespondances kool). S'il y a plusieurs correspondances du même mot, marquez-les toutes.

Sortie:

Votre sortie sera la grille qui vous a été donnée - avec le changement mineur que les lettres seront séparées par des espaces et les lignes seront à double interligne. Exemple:

Input:
looc
thea
jopr

Output:
l o o c

t h e a

j o p r

Pour représenter une correspondance, vous mettrez une flèche entre les lettres qui vont ensemble. Les flèches ( /\-|X) pointeront vers chaque paire de lettres regroupées dans une correspondance. Xest utilisé en cas d' /\intersection.

Exemples:

Input:
The cool car
looc
thea
jopr

Output:
l-o-o-c
      |
t-h-e a
      |
j o p r

Input:
Atomic chess is cool
achess
btoikm
bloosi
nowmlp
hewiir
asdfec

Output:
a c-h-e-s-s
 \ \   /   
b t o i k m
   \ \ \   
b l o o s-i
     \ \   
n o w m l p
       \   
h e w i i r
         \ 
a s d f e c

Input:
This is very neat words var are fun rob bot robot
wotsdsearn
siiewfvery
chheruoawd
tetoennore
asbdrgrehe
aobyedycab
tweosttgwt

Output:
w o t s d s e a r n
     /             
s-i i e w f v-e-r-y
   /      |  \     
c h h e r u o a w d
 /     /  |    X   
t e t o e n n o r e
     /       X   \ 
a s b d r g r e h e
   /       /   \   
a o b y e d y c a b
 /       /       \ 
t w e o s t t g w t

JavaScript (ES6), 303 315

Principalement basé sur cette réponse

Modifier 1

• Suite au commentaire OP, ignorant la casse et forçant tout en minuscules.
• Correction des arguments, maintenant juste un seul argument de chaîne qui est divisé

Remarque: à l'aide de chaînes de modèle, il y a 3 sauts de ligne dans le code qui sont significatifs et inclus dans le nombre d'octets

l=>(l=l.toLowerCase().split`
`).shift(r=l[1].length*4).split` `.map(v=>[2,-2,r,-r,r+2,-r-2,r-2,2-r].map((d,k)=>o.map((t,p)=>[...v].some((c,i)=>z[i?(z[i=t+d/2]=z[i]>' '?'X':'-|\\/'[k>>1],t+=d):t=p]!=c,z=[...o])?0:o=z)),o=[...l.map(s=>' '.repeat(r/2-1)+`
${[...s].join` `}
`).join``.slice(r/2)])&&o.join``

Expliqué (obsolète)

// Note a pattern : in golfed code (but not in the following explanation),
//                  simple operations that have to done before calling .map or .every
//                  are inserted as parameter 2,3,etc... to the same function
//                  as each parameter is evaluated before calling a function
// 
F=( l, // word list as a space separated string
    o, // character grid as a newline separated string - each row is the same length
    // default parameters used as local variables
    r = 4 * o.search`\n` // offset from a line to next nonblank line in resulting output
  )=>(
    w = ' ', // shortcut for blank
    // given the input string in o, build the result as a single dimension array filled with blanks
    // between characters and runs of blank chars betweem each row 
    // .map used as a shorter .forEach
    z = w, // init z to a single blank
    [...o].map( c=> // for each char of o execute the following
                c > w // check if c is a letter (>' ') or a newline
                 ? z+=w+c // if c is a letter, add ' '+c to z
                 : ( // if c is a newline add chars to array o
                     z = z.slice(2), // remove the first 2 char of z ('  ' or '\n ')
                     z = [...z], // convert to array
                     o.push(...z, // push one by one the chars of z
                            c, // then c (a newline)
                            ...z.fill(w), // the same number of char as z, but all blanks
                            z = c // a newline again, meanwhile reset z
                           )
                   )
            , o=[] // o is reset to an empty array just in the map call 
                   // reusing o just to avoid another global variable (no real need in fact)
    ), // end of .map call 
    l.split` `.map( // split l into words and exec the following for each word
      v => [2,-2,r,-r,r+2,-r-2,r-2,2-r].map( // for each scan direction
        (d,k) => // d is the move offset , k is the index 0 to 7
        o.map( // for each char in (including fill blanks and newlines, the scan will fail for them) 
          (t,p) => // t is the first character but NOT USED (var t reused), p is the start position
          (
            z=[...o], // make a copy of o in z
            t = p-d, // current position-d goes in t, it will be incremented before using
            [...v].every( // check the following conditions for every char of word v
            (c,i) => // c: current char of word, i: index used to differentiate the first check when i==0
              (
                // while scanning I already modify the result working copy in z
                i ? // if i != 0 
                  // fill the intermediate position with the right fiil character
                  // based on direction index in k, or X if the position is already full
                  z[i = t+d/2] = z[i] > w ? 'X' : '--||\\\\//'[k]
                : 0, // else do nothing
                // case insensitive comparison, if not a letter parseInt returns NaN that is != from any value
                // this is the condition retured to the .every function
                parseInt(c,36)==parseInt(o[t+=d],36) // meanwhile increment position in T
              )  
            ) ? // check the result of .every
            o = z // if true, update o from the working copy
            : 0 // if false do nothing
          ) // end of o.map operations
        ) // end of o.map function call
      ) // end of direction list map function call
    ) // end of l.split.map function call
    , o.join``
  )

TESTER

console.log=(...x)=>O.textContent+=x.join` `+`\n`;

F=l=>
  (l=l.toLowerCase().split`\n`)
  .shift(r=l[1].length*4).split` `.map(v=>[2,-2,r,-r,r+2,-r-2,r-2,2-r].map((d,k)=>o.map((t,p)=>
    [...v].some((c,i)=>z[i?(z[i=t+d/2]=z[i]>' '?'X':'-|\\/'[k>>1],t+=d):t=p]!=c
    ,z=[...o])?0:o=z)
  ),o=[...l.map(s=>' '.repeat(r/2-1)+`\n${[...s].join` `}\n`).join``.slice(r/2)])
  &&o.join``
  


console.log(F('Atomic chess is cool\nachess\nbtoikm\nbloosi\nnowmlp\nhewiir\nasdfec'))


console.log(F("RANDOM VERTICAL HORIZONTAL WIKIPEDIA Tail WordSearch CODEGOLF UNICORN\nWVERTICALL\nROOAFFLSAB\nACRILIATOA\nNDODKONWDC\nDRKESOODDK\nOEEPZEGLIW\nMSIIHOAERA\nALRKRRIRER\nKODIDEDRCD\nHELWSLEUTH"))

<pre id=O></pre>

Javascript (ES6), 908 901 609 603 556 552 octets

a=>(a=a.toLowerCase().replace(/\n/g,`

`).split`
`,b=a.slice(2).map(r=>r.length?r.replace(/./g,i=>i+` `).trim().split``:Array(a[2].length*2-1).fill(` `)),a[0].split` `.forEach(c=>{for(y=0;y<b.length;y+=2){for(x=0;x<b[y].length;x+=2){c[0]==b[y][x]&&(d=[-2,0,2]).map(l=>{d.map(k=>{e=`\\|/
-o-
/|\\`.split(`
`)[l/2+1][k/2+1];try{(f=(g,h,j)=>g>=c.length?1:(ch=c[g],((k||l)&&b[j+l][h+k]==ch&&f(g+1,h+k,j+l))?(b[j+l/2][h+k/2]=((b[j+l/2][h+k/2]=='\\'&&e=='/')||(b[j+l/2][h+k/2]=='/'&&e=='\\'))?'x':e):0))(1,x,y);}catch(e){}})})}}}),b.map(r=>r.join``).join`
`)

Non golfé:

inp => (
    inp = inp.toLowerCase().replace(/\n/g, `

`).split `
`,
    puzzle = inp.slice(2).map(r => r.length ? r.replace(/./g, i => i + ` `).trim().split `` : Array(inp[2].length * 2 - 1).fill(` `)),

    inp[0].split ` `.forEach(word => {
        for (y = 0; y < puzzle.length; y += 2) {
            for (x = 0; x < puzzle[y].length; x += 2) {
                word[0] == puzzle[y][x] &&
                    (dirs = [-2, 0, 2]).map(ydir => {
                        dirs.map(xdir => {
                            symb = `\\|/
-o-
/|\\`.split(`
`)[ydir / 2 + 1][xdir / 2 + 1];

                            try {
                                (findWord = (chnum, xcoord, ycoord) =>
                                    chnum >= word.length ? 1 : (
                                        ch = word[chnum],
                                        ((xdir || ydir) && puzzle[ycoord + ydir][xcoord + xdir] == ch && findWord(chnum + 1, xcoord + xdir, ycoord + ydir)) ?
                                            (puzzle[ycoord + ydir / 2][xcoord + xdir / 2] = ((puzzle[ycoord + ydir / 2][xcoord + xdir / 2] == '\\' && symb == '/') || (puzzle[ycoord + ydir / 2][xcoord + xdir / 2] == '/' && symb == '\\')) ? 'x' : symb)
                                            : 0
                                    )
                                )(1, x, y);
                            } catch (e) {}
                        })
                    })
            }
        }
    }),

    puzzle.map(r => r.join ``).join `
`
)

Test (devrait fonctionner avec les navigateurs modernes qui prennent en charge ES6):

func=a=>(a=a.toLowerCase().replace(/\n/g,`

`).split`
`,b=a.slice(2).map(r=>r.length?r.replace(/./g,i=>i+` `).trim().split``:Array(a[2].length*2-1).fill(` `)),a[0].split` `.forEach(c=>{for(y=0;y<b.length;y+=2){for(x=0;x<b[y].length;x+=2){c[0]==b[y][x]&&(d=[-2,0,2]).map(l=>{d.map(k=>{e=`\\|/
-o-
/|\\`.split(`
`)[l/2+1][k/2+1];try{(f=(g,h,j)=>g>=c.length?1:(ch=c[g],((k||l)&&b[j+l][h+k]==ch&&f(g+1,h+k,j+l))?(b[j+l/2][h+k/2]=((b[j+l/2][h+k/2]=='\\'&&e=='/')||(b[j+l/2][h+k/2]=='/'&&e=='\\'))?'x':e):0))(1,x,y);}catch(e){}})})}}}),b.map(r=>r.join``).join`
`);

<textarea id="_input">Atomic chess is cool
achess
btoikm
bloosi
nowmlp
hewiir
asdfec</textarea>
<br />
<button onclick="document.getElementById('_output').innerHTML = func(document.getElementById('_input').value)">Run!</button>
<br />
<pre id="_output"></pre>

Python 3, 1387

k=input().lower().split(" ")
a=[]
while 1:
 a.append(input())
 if not a[-1]:a.pop();break
b=sum([[list(' '.join(list(i))),[' ']*(len(i)*2-1)]for i in a],[])[:-1]
w,h=len(a[0]),len(a)
for l in range(h):
 r=a[l];c=list([1 if w in r else 2 if w in r[::-1] else 0, w] for w in k)
 for t,v in c:
  if not t:continue
  if t==2:v=v[::-1]
  i=r.index(v)
  for m in range(i,i+len(v)-1):b[l*2][m*2+1]="-"
for l in range(w):
 u=''.join(x[l]for x in a);_=list([1 if w in u else 2 if w in u[::-1]else 0,w]for w in k)
 for t,v in _:
  if not t:continue
  if t==2:v=v[::-1]
  i=u.index(v)
  for m in range(i,i+len(v)-1):b[m*2+1][l*2]="|"
def d(g,r=1,o=0):
 if g>=len(a[0]):o=g-w+1;g=w-1
 f=range(0,min(g+1,h-o));return[a[i+o][w-1-(g-i)if r else g-i]for i in f],[(i+o,w-1-(g-i)if r else g-i)for i in f]
for l in range(w+h-1):
 x,c=d(l);_=''.join(x);z=list([1 if w in _ else 2 if w in _[::-1]else 0,w]for w in k) 
 for t,v in z:
  if not t:continue
  if t==2:v=v[::-1]
  i=_.index(v)
  for m in range(i,i+len(v)-1):b[c[m][0]*2+1][c[m][1]*2+1]="\\"
for l in range(w+h-1):
 x,c=d(l,0);_=''.join(x);z=list([1 if w in _ else 2 if w in _[::-1]else 0,w]for w in k)
 for t,v in z:
  if not t:continue
  if t==2:v=v[::-1]
  i=_.index(v)
  for m in range(i,i+len(v)-1):y=c[m][0]*2+1;x=c[m][1]*2-1;j=b[y][x];b[y][x]="x"if j=="\\"else"/"
print('\n'.join(''.join(x) for x in b))

Un "est" a été manqué dans le deuxième exemple

Atomic chess is cool
achess
btoikm
bloosi
nowmlp
hewiir
asdfec

a c-h-e-s-s
 \ \   /
b t o i k m
   \ \ \
b l o o s-i
     \ \
n o w m l p
       \
h e w i i r
         \
a s d f e c

Sorta non golfé

words = input().lower().split(" ")
square = []
while 1:
 square.append(input())
 if not square[-1]:square.pop();break

solved = sum([[list(' '.join(list(i))),[' ']*(len(i)*2-1)]for i in square], [])[:-1]
w,h = len(square[0]), len(square)


for l in range(h):
 r = square[l]
 rm = list([1 if w in r else 2 if w in r[::-1] else 0, w] for w in words)
 for t,v in rm:
  if not t:continue
  v = v[::-1] if t==2 else v
  i = r.index(v)

  for m in range(i,i+len(v)-1):solved[l*2][m*2+1]="-"

for l in range(w):
 u = ''.join(x[l] for x in square)
 um = list([1 if w in u else 2 if w in u[::-1] else 0, w] for w in words)
 for t,v in um:
  if not t:continue
  v = v[::-1] if t==2 else v
  i = u.index(v)

  for m in range(i,i+len(v)-1):solved[m*2+1][l*2]="|"

def d(m,ind,r=1,o=0):
 if ind>=len(m[0]):o=ind-len(m[0])+1;ind=len(m[0])-1
 f=range(0,min(ind+1,len(m)-o));return[m[i+o][len(m[0])-1-(ind-i)if r else ind-i]for i in f],[(i+o,len(m[0])-1-(ind-i)if r else ind-i)for i in f]

for l in range(w+h-1):
 x,c = d(square,l)
 dl = ''.join(x)
 dlm = list([1 if w in dl else 2 if w in dl[::-1] else 0, w] for w in words)
 for t,v in dlm:
  if not t:continue
  v = v[::-1] if t==2 else v
  i = dl.index(v)
  for m in range(i,i+len(v)-1):solved[c[m][0]*2+1][c[m][1]*2+1]="\\"

for l in range(w+h-1):
 x,c = d(square,l,0)
 dr = ''.join(x)
 drm = list([1 if w in dr else 2 if w in dr[::-1] else 0, w] for w in words)
 for t,v in drm:
  if not t:continue
  v = v[::-1] if 

t==2 else v
  i = dr.index(v)
  for m in range(i,i+len(v)-1):y=c[m][0]*2+1;x=c[m][1]*2-1;j=solved[y][x];solved[y][x]="x"if j=="\\"else"/"

print('\n'.join(''.join(x) for x in solved))

Mathematica, 478 octets

f[j_,k_]:=({m,p}=ToCharacterCode@*StringSplit/@{j,ToLowerCase@k};
    t=Transpose;v=Length@m[[1]];i=MapIndexed;r=RotateLeft;
    y@d_:=t@i[r[PadLeft[#,2v d],#2 d]&,m];z[m_,d_,p_]:=i[r[#,#2d]&,t@m][[All,p]];
    c[m_,s_]:=(a=0~Table~{v};a[[Join@@(Range[#,#2-1]&@@@SequencePosition[#,s|Reverse@s])]]=1;a)&/@m;
    FromCharacterCode@Flatten@Riffle[#,10]&@
        Flatten[BitOr@@({{m,8m~c~#},{4t@c[t@m,#],2z[y@1~c~#,-1,-v;;-1]+z[c[y@-1,#],1,2;;v+1]}}&/@p)
            /.{0->32,1->47,2->92,3->88,4->124,8->45},{{3,1},{4,2}}])

Cas de test:

f["wotsdsearn\nsiiewfvery\nchheruoawd\ntetoennore\nasbdrgrehe\naobyedycab\ntweosttgwt",
    "This is very neat words var are fun rob bot robot"]
(*
w o t s d s e a r n 
     /              
s-i i e w f v-e-r-y 
   /      |  \      
c h h e r u o a w d 
 /     /  |    X    
t e t o e n n o r e 
     /       X   \  
a s b d r g r e h e 
   /       /   \    
a o b y e d y c a b 
 /       /       \  
t w e o s t t g w t 
*)