Su trabajo, para este golf, es escribir un programa que tome movimientos de un juego de reversi (othello) y muestre el resultado al usuario.

Entrada

Una cadena de números tomados del rango [0-7]. Cada par de números representa primero la coordenada X, luego la coordenada Y. Cualquier personaje que no esté en ese rango debe ser ignorado.

Salida

Una representación visual del resultado del juego, incluido quién lidera cuando finaliza la entrada. Puede ser una salida gráfica o de pulsación de tecla, pero debe ser una cuadrícula visual del juego, con un carácter / símbolo gráfico distinto para negro, blanco y vacío.

Además, su código debe generar un mensaje de error y detenerse cuando se ingresa un movimiento ilegal (el mismo cuadro más de una vez, o un cuadro que no voltea ninguna ficha).

Los saltos deben manejarse con gracia. Un salto ocurre cuando un color no tiene movimiento legal, su turno se salta y el otro jugador juega.

El negro siempre va primero.

Ejemplos

23
........
........
........
..bbb...
...bw...
........
........
........
b

232425140504032627
........
........
........
b.bbb...
bbbww...
b.b.....
..b.....
..b.....
b

2324322513
........
........
........
..bbb...
..www...
........
........
........
e

23242555
........
........
........
..bbb...
..bbw...
..b.....
........
........
e

Haskell - 1493 bytes

En esta versión, no hay mensajes de error detallados y la salida es mucho más básica. El cambio principal fue reemplazar Either String acon Maybe ay dado que ambas son mónadas, esto se logró simplemente intercambiando Right acon Just ay Left Stringcon Nothing.

{-# LANGUAGE OverloadedStrings #-}
import Prelude hiding ((>>=),concatMap,filter,foldl,head,last,map,null,replicate)
import Control.Applicative hiding (empty)
import Control.Monad hiding (replicateM)
import Data.Vector hiding ((++),concat,foldM,reverse,zip)
main=getLine>>= \s->h$t<$>(zip$cycle[w,v])<$>b s>>= \m->u(\b(c,x)->case d b x c of r@(Just _)->r;Nothing->if not$null$findIndices(\y->e$d b y c)$t[(x,y)|x<-[0..7],y<-[0..7]];then é;else d b x$not c)k$n m
 where b(x:y:s)=(:)(read [x],read [y])<$>b s;b(_:_)=é;b[]=è[];d b z c=let d=join$m(f b z c)$m(\v->(head v,last v))$replicateM 2$t[-1,0,1];in if null d;then Nothing;else u(\b (x,y)->case b!?y of Just r->(case r!?x of Just _->è$b//[(y,r//[(x,è c)])];Nothing->é);Nothing->é)b$n$d`snoc`z;e(Nothing)=w;e(Just _)=v;f b(x,y)c z@(u,v)=let r=x+u;s=y+v;t=(r,s);in (case g b t of Just(Just d)->if d==c;then l;else (case g b (r+u,s+v) of Just(Just _)->t`cons`f b t c z;_->l);Just(Nothing)->l;Nothing->l);g b(x,y)=(case b!?y of Just col->col!?x;Nothing->é);h(Just b)=p$(o$n$m(\r->o(n$m(\c->case c of Just False->"B";Just True->"W";Nothing->".")r)++"\n")b)++i(q(\(w,b)(rw,rb)->(w+rw,b+rb))(0,0)$m(\r->q(\s@(w,b)c->case c of Just True->(w+1,b);Just False->(w,b+1);_->s)(0,0)r)b);h Nothing=p"e";i(w,b)|w>b="W"++s w|b>w="B"++s b|v="N"++s(w+b);j=r 8 é;k=r 8 j//[(3,j//[(3,è v),(4,è w)]),(4,j//[(3,è w),(4,è v)])];l=empty;m=map;n=toList;o=concat;p=putStrLn;q=foldl;r=replicate;s=show;t=fromList;u=foldM;v=True;w=False;é=Nothing;è=Just

$ printf "232425140504032627" | ./nano-rve 
........
........
........
B.BBB...
BBBWW...
B.B.....
..B.....
..B.....
B11

Versión original - 4533 bytes

¡Jugaré golf cuando haya competencia! editar Ha llegado

{-# LANGUAGE OverloadedStrings #-}
import Prelude hiding ((>>=),concatMap,filter,foldl,map,null,replicate)
import Control.Applicative hiding (empty)
import Control.Monad
import Data.Either
import Data.Vector hiding ((++),concat,foldM,reverse,zip)

type Case = Maybe Bool
type Board = Vector (Vector Case)
type Coord = (Int,Int)

-- fmap (toList) $ replicateM 2 [-1,0,1] -- minus (0,0)
directions :: Vector Coord
directions = fromList [(-1,-1),(-1,0),(-1,1),(0,-1),(0,1),(1,-1),(1,0),(1,1)]

--  [(x,y) | x <- [0..7], y <- [0..7]]
allCoords :: Vector Coord
allCoords = fromList [(0,0),(0,1),(0,2),(0,3),(0,4),(0,5),(0,6),(0,7),(1,0),(1,1),(1,2),(1,3),(1,4),(1,5),(1,6),(1,7),(2,0),(2,1),(2,2),(2,3),(2,4),(2,5),(2,6),(2,7),(3,0),(3,1),(3,2),(3,3),(3,4),(3,5),(3,6),(3,7),(4,0),(4,1),(4,2),(4,3),(4,4),(4,5),(4,6),(4,7),(5,0),(5,1),(5,2),(5,3),(5,4),(5,5),(5,6),(5,7),(6,0),(6,1),(6,2),(6,3),(6,4),(6,5),(6,6),(6,7),(7,0),(7,1),(7,2),(7,3),(7,4),(7,5),(7,6),(7,7)]


initBoard :: Board
initBoard = vs // [(3,v1),(4,v2)]
    where va = replicate 8 Nothing
          v1 = va // [(3,Just True),(4,Just False)]
          v2 = va // [(3,Just False),(4,Just True)]
          vs = replicate 8 va

showBoard :: Board -> String
showBoard b = (concat $ toList $ map (showRow) b) ++ (showScore b)
    where showCase :: Case -> String
          showCase c = case c of 
              Just False -> "░B"
              Just True -> "▓W"
              Nothing -> "██"
          showRow :: Vector Case -> String
          showRow r = concat (toList $ map (showCase) r) ++ "\n"

showScore :: Board -> String
showScore b = winner score ++ "\n"
    where scoreCase :: (Int,Int) -> (Maybe Bool) -> (Int,Int)
          scoreCase (w,b) (Just True) = (w+1,b)
          scoreCase (w,b) (Just False) = (w,b+1)
          scoreCase s _ = s
          scoreRow :: Vector Case -> (Int,Int)
          scoreRow r = foldl (scoreCase) (0,0) r
          score :: (Int,Int)
          score = foldl (\(w,b) (rw,rb) -> (w+rw,b+rb)) (0,0) $ map (scoreRow) b
          winner :: (Int,Int) -> String
          winner (w,b) | w > b = "White with " ++ show w ++ " against Black with " ++ show b ++ "."
                       | b > w = "Black with " ++ show b ++ " against White with " ++ show w ++ "."
                       | otherwise = "Nobody with " ++ show (w+b) ++ "."

printBoard :: Board -> IO ()
printBoard b = putStrLn $ showBoard b
pm :: Either String Board -> IO ()
pm (Right b) = printBoard b
pm (Left s)  = putStrLn s

lookupBoard :: Board -> Coord -> Either String Case
lookupBoard b (x,y) = case b !? y of
    Just col -> case col !? x of
        Just c -> Right c
        Nothing -> Left "x is out of bounds"
    Nothing -> Left "y is out of bounds"

updateBoard :: Board -> Coord -> Bool -> Either String Board
updateBoard b (x,y) c = case b !? y of
    Just r -> case r !? x of
        Just _ -> Right $ b // [(y,r // [(x,Just c)])] 
        Nothing -> Left "x is out of bounds"
    Nothing -> Left "y is out of bounds"

makePath :: Board -> Coord -> Bool -> Coord -> Vector Coord
makePath b (x,y) c (px,py) = case lookupBoard b (nx,ny) of
        Right (Just pc) -> if pc == c
            then empty
            else case lookupBoard b (nx+px,ny+py) of
                Right (Just _) -> (nx,ny) `cons` makePath b (nx,ny) c (px,py)
                _ -> empty
        Right (Nothing) -> empty
        Left _ -> empty
    where nx = x+px
          ny = y+py

makeMove :: Board -> Coord -> Bool -> Either String Board
makeMove b xy@(x,y) c = if null cases 
        then Left $ "impossible move " ++ show xy ++ "."
        else foldM (\ob (cx,cy) -> updateBoard ob (cx,cy) c) b $ toList $ cases `snoc` (x,y)
    where cases = join $ map (makePath b (x,y) c) directions

makeMoves :: Board -> Vector (Bool,Coord) -> Either String Board
makeMoves b ms = foldM (\ob (c,xy) -> case makeMove ob xy c of
    rb@(Right _) -> rb
    Left _ -> if not $ null $ findIndices (\xy -> isRight $ makeMove ob xy c) allCoords
        then Left $ "wrong move " ++ show xy ++ "."
        else makeMove ob xy (not c)) b $ toList ms


movesFromString :: String -> Either String (Vector (Bool,Coord))
movesFromString cs = fromList <$> (zip $ cycle [False,True]) <$> coords cs
    where coords (x:y:cs) = (:) (read [x],read [y]) <$> coords cs
          coords (_:cs) = Left "invalid coordinates string"
          coords [] = Right []

isRight :: Either a b -> Bool
isRight (Left _) = False
isRight (Right _) = True

main=getLine>>= \s->pm$movesFromString s>>=makeMoves initBoard

Nota: Su segundo ejemplo debe ser 2324251 4 0504032627.

Pruebas

Con capturas de pantalla para evitar quemaduras en los ojos.

$ printf "232425140504032627" | ./rve

$ printf "2324" | ./rve

$ printf "1" | ./rve
invalid coordinates string

$ printf "24" | ./rve
wrong move (2,4).

Es posible obtenerlo impossible move (x,y)cuando usa innardics (funciones de las entrañas del programa y que no debe usar) y x/y is out of bounds.

Javascript (E6) 399 412 450

Editar: la pantalla del tablero es más corta y agradable, corta un poco de carbón

V=(p,b)=>b[p]==(r=0)&&[1,8,9,10].map(d=>r|=(A=(p,d,c=0)=>b[p+=d]==-v?A(p,d,1)&&(b[p]=v):c&b[p]==v)(p,d)|A(p,-d))|r&&(b[p]=v)
L=console.log
l=prompt().replace(/[^0-7]/g,'')
for(i=B=[];++i<73;)B[i]=i%9?i-31&&i-41?i-32&&i-40?0:1:-1:-B
for(v=i=1;l[i];i+=2,v=-v)V(p=l[i]*9+-~l[i-1],B)||!B.some((x,i)=>V(i,[...B]))&&(V(p,B,v=-v))||L(l='Err')
t=0,L(B.map(x=>(t+=~~x,'\nO ☻'[x+2|0]))+(t?t<0?'O':'☻'+t:'='))

Sin golf

V = (p, b) =>      // Verify a move and if it is legal, apply the move to the board
b[p]==(r=0) &&     // check if empty cell and init accumulator r
[1,8,9,10].map(d=> // Execute flip check for each of 4 positive direction (and 4 negative too)
  r |= (            
  A=(p,d,c=0) =>   // Recursive function for flip check, if find it valid modify the board during return phase
  b[p+=d] == -v    // If position contains a disk of other color
   ? A(p,d,1) && (b[p]=v) // recursive call. Then if returns true, set the cell in the flip sequence
   : c & b[p]==v   // at end of check, if find the righe disk and if not the first call, return true
  )                // Definition of A function ends here
  (p,d)|A(p,-d)    // Call A 2 times with d and -2 to get all 8 directions
) | r              // now, r is true if any of the 8 flip checks has gone well
&& (b[p]=v);       // if true, set the verified cell too

L=console.log;

l=prompt().replace(/[^0-7]/g,'');            // Get input & discard invalid chars

for (i=B=[];++i<73;) // Create empty board as a single dimension array, NaN mark a row end
  B[i] = i%9 
    ? i-31 && i-41 
      ? i-32 && i-40 
        ? 0: 1: -1: -B //starting values at center, -B evaluate to NaN

for(v=i=1;    // v is the disk color, init to 1 == black
  l[i];       // repeat while inside input string
  i+=2, v=-v) // to char of input at time, set color to opposite
    V( p=l[i]*9+-~l[i-1], B)      // calc position in p from the input, and call Verify
    ||                            // if not valid, could be Error or Skip
      !B.some((x,i)=>V(i,[...B])) // Check if there are no moves for the current color, for each cell call V on a copy of the board
      &&
      (V(p,B,v=-v)) // If no moves found, try to apply the move for the opposite color
    ||
      L(l='Err');   // If failed, it is Error. Change variable l to end the loop

t=0, // Display the board while counting disk difference into 't'
L( 
  B.map(x=>(t+=~~x,'\nO ☻'[x+2|0])) // map array elements to suitable chars, then auto conversion to string give a nice effect
  + (t?t<0?'O':'☻'+t:'=')
) // Display leading and count difference or '='

Prueba

Prueba en la consola de JavaScript (FireFox): 232425140504032627 , , , , , , , , , , , , , , , , , , , , , , , , , , , ,☻, ,☻,☻,☻, , , , ,☻,☻,☻,O,O, , , , ,☻, ,☻, , , , , , , , ,☻, , , , , , , , ,☻, , , , , , ☻9