16 puzzle game: Difference between revisions
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[[Category:Games]]
16 numbered pieces of the puzzle are placed out of order on a 4 X 4 grid. The correct order to win is to order the pieces
as 1 through 16, read left to right, top to bottom:
<pre>
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
</pre>
How to Play: The aim is to get the pieces back in order by clicking on the yellow arrows (choosing a location to rotate a row or column) to slide the pieces left or right, up or down.
<pre>
1 14 3 4 1 2 3 4
5 2 7 8 --> 5 6 7 8
9 6 11 12 9 10 11 12
13 10 15 16 13 14 15 16
^
</pre>
The Easy puzzle target is 3 moves, for the Hard puzzle it is 12 moves (or less!). Can it be that simple?
;Task:
Line 8 ⟶ 29:
See details: [https://web.archive.org/web/20190202094051/http://www.bsswebsite.me.uk/Puzzlewebsite/Fifteenpuzzle/sixteen.htm
Line 17 ⟶ 38:
:* [[15_Puzzle_Game|15 Puzzle Game]]
<br><br>
=={{header|AutoHotkey}}==
With Solver, See [[16_puzzle_game/autohotkey]]
=={{header|FreeBASIC}}==
{{trans|Wren}}
<syntaxhighlight lang="vb">Const easy = 1, hard = 4
Dim Shared As Byte n(1 To 16)
Sub initGrid ()
For i As Byte = 0 To 15
n(i) = i + 1
Next
End Sub
Sub rotate (ix() As Byte)
Dim As Byte last = n(ix(3))
For i As Byte = 3 To 1 Step -1
n(ix(i)) = n(ix(i-1))
Next
n(ix(0)) = last
End Sub
Function hasWon () As Boolean
For i As Byte = 0 To 15
If n(i) <> i+1 Then Return False
Next
Return True
End Function
Sub setDiff (level As Byte)
Dim As Byte moves = Iif(level = easy, 3, 12)
Dim As Byte rc(), j, i
For i = 0 To moves
Redim As Byte rc(20)
Dim As Byte r = Int(Rnd * 2)
Dim As Byte s = Int(Rnd * 4)
If r = 0 Then ' rotate random row
For j = s*4 To (s+1)*4
rc(j) = j
Next
Else ' rotate random column
For j = s To s+16 Step 4
rc(j) = j
Next
End If
rotate(rc())
If hasWon() Then ' do it again
i = -1
End If
i += 1
Next
Print Using !"\nTarget is ## moves."; moves
End Sub
Sub drawGrid ()
Print !"\n D1 D2 D3 D4"
Print " +-------------------+"
Print Using "R1 | ## | ## | ## | ## | L1"; n(0); n(1); n(2); n(3)
Print " |----+----+----+----|"
Print Using "R2 | ## | ## | ## | ## | L2"; n(4); n(5); n(6); n(7)
Print " |----+----+----+----|"
Print Using "R3 | ## | ## | ## | ## | L3"; n(8); n(9); n(10); n(11)
Print " |----+----+----+----|"
Print Using "R4 | ## | ## | ## | ## | L4"; n(12); n(13); n(14); n(15)
Print " +-------------------+"
Print !" U1 U2 U3 U4\n"
End Sub
'--- Programa Principal ---
Randomize Timer
Dim As Byte level = easy
Dim As String diff
Print "Enter difficulty level easy or hard E/H: ";
Do
Input ; "", diff
Loop Until Instr("eEhH", diff)
If Ucase(diff) = "H" Then level = hard
Cls
Print "Sixteen Puzzle"
initGrid()
setDiff(level)
Dim As Byte ix(0 To 3)
Print "When entering moves, you can also enter Q to quit or S to start again."
Dim As Byte c, moves = 0
Dim As String*2 move
Do
drawGrid()
If hasWon() Then
Print "Congratulations, you have won the game in"; moves; " moves!!"
While Inkey = "": Wend
Exit Do
End If
Do
Print "Moves so far = "; moves
Input "Enter move : ", move
Select Case Trim(Ucase(move))
Case "D1", "D2", "D3", "D4"
c = Cint(Right(move,1)) - 49
ix(0) = 0 + c
ix(1) = 4 + c
ix(2) = 8 + c
ix(3) = 12 + c
rotate(ix())
moves += 1
Exit Do
Case "L1", "L2", "L3", "L4"
c = Cint(Right(move,1)) - 49
ix(0) = 3 + 4*c
ix(1) = 2 + 4*c
ix(2) = 1 + 4*c
ix(3) = 0 + 4*c
rotate(ix())
moves += 1
Exit Do
Case "U1", "U2", "U3", "U4"
c = Cint(Right(move,1)) - 49
ix(0) = 12 + c
ix(1) = 8 + c
ix(2) = 4 + c
ix(3) = 0 + c
rotate(ix())
moves += 1
Exit Do
Case "R1", "R2", "R3", "R4"
c = Cint(Right(move,1)) - 49
ix(0) = 0 + 4*c
ix(1) = 1 + 4*c
ix(2) = 2 + 4*c
ix(3) = 3 + 4*c
rotate(ix())
moves += 1
Exit Do
Case "Q"
Exit Do, Do
Case "S"
Cls
initGrid()
setDiff(level)
moves = 0
Exit Do
Case Else
Print "Invalid move, try again."
End Select
Loop
Loop
'--------------------------
Sleep</syntaxhighlight>
=={{header|FutureBasic}}==
<syntaxhighlight lang="future basic">
begin enum
_down = 1
_right
_up
_left
_new = 100
_restrt
_help
_end
end enum
str63 board, startPos, winBoard
void local fn init
window 1,,(0,0,340,340)
int x
for x = 1 to 4
button 10+x,,,@"⬇️",(x*50+20,270,50,50),,NSBezelStyleTexturedSquare
ControlSetFontWithName( 10+x, @"Menlo", 32 )
button 30+x,,,@"⬆️",(x*50+20, 20,50,50),,NSBezelStyleTexturedSquare
ControlSetFontWithName( 30+x, @"Menlo", 32 )
button 25-x,,,@"➡️",( 20,x*50+20,50,50),,NSBezelStyleTexturedSquare
ControlSetFontWithName( 25-x, @"Menlo", 32 )
button 45-x,,,@"⬅️",(270,x*50+20,50,50),,NSBezelStyleTexturedSquare
ControlSetFontWithName( 45-x, @"Menlo", 32 )
next
button _new ,,,@"New", ( 20,270,50,50),,NSBezelStyleTexturedSquare
button _end ,,,@"Quit", ( 20, 20,50,50),,NSBezelStyleTexturedSquare
button _restrt,,,@"Redo", (270,270,50,50),,NSBezelStyleTexturedSquare
button _help ,,,@"Help", (270, 20,50,50),,NSBezelStyleTexturedSquare
for x = 1 to 16
winBoard += chr$(x)
next
board = winBoard
end fn
void local fn drawBoard
int c = 1, x, y, z
cls
for y = 70 to 220 step 50
for x = 70 to 220 step 50
rect fill (x,y,48,48), fn coloryellow
if board[c] > 9 then z = x-3 else z = x+6
print %(z,y+6) str(board[c]);
c++
next
next
end fn
void local fn move( tag as int )
int r, d, rc = (tag mod 10)
select tag / 10
case _up : d = +4
case _right : d = -1 : rc *= 4
case _down : d = -4 : rc += 12
case else : d = +1 : rc = rc * 4 - 3
end select
for r = rc to rc + 2 * d step d
swap board[r], board[r+d]
next
if board == winBoard then window 1, @"!!! YOU WON !!!" : text,,fn colorRed
fn drawBoard
end fn
void local fn newGame
window 1, @"16 PUZZLE GAME"
int r
for r = 1 to 16
swap board[r], board[rnd(16)]
next
startPos = board
text @"Arial bold", 32, fn colorblue
fn drawBoard
end fn
void local fn ask( tag as long )
CFStringRef s1, s2 : int btn
select tag
case _help
s1 = @"Use the arrow buttons to move numbers in rows and columns.\n¬
Win by arranging the numbers in order, left to right, top to bottom:"
s2 = @" 1 2 3 4 \n 5 6 7 8 \n 9 10 11 12\n 13 14 15 16"
btn = alert 1, NSAlertStyleInformational, s1, s2, @"Okay"
case _new : if board == winBoard then fn newGame : exit fn
s1 = @"Leave this puzzle\nand start a new one?"
btn = alert 1, NSAlertStyleInformational, s1,,@"New puzzle;Cancel"
if btn == NSAlertFirstButtonReturn then fn newGame
case _restrt
s1 = @"Restart this puzzle\nfrom the beginning?"
btn = alert 1, NSAlertStyleInformational,s1,,@"Restart;Cancel"
if btn == NSAlertFirstButtonReturn then board = startPos : fn drawBoard
case _end
btn = alert 1, NSAlertStyleInformational,@"Quit 16 GAME?",,@"Quit;Cancel"
if btn == NSAlertFirstButtonReturn then end
end select
end fn
void local fn doDialog(ev as long, tag as long)
select ev
case _btnClick : if tag < _new then fn move( tag ) else fn ask( tag )
case _windowWillClose : end
end select
end fn
on dialog fn doDialog
fn init
fn newGame
handleevents
</syntaxhighlight>
{{out}}
[[File:16 Puzzle Game.png]]
=={{header|Go}}==
<
import (
Line 196 ⟶ 481:
}
}
}</
{{out}}
Line 267 ⟶ 552:
Congratulations, you have won the game in 3 moves!!
</pre>
=={{header|J}}==
Assumes a recent release of jqt:<syntaxhighlight lang="j">require'ide/qt/gl2'
coinsert'jgl2'
NB. event handlers
game_reset_button=: {{ draw COUNT=: #SETUP=: EMPTY [BOARD=: WIN }}
game_restart_button=: {{ draw COUNT=: 0 [rotate"1 SETUP [BOARD=: WIN }}
game_easy_button=: {{ setup 3 }}
game_hard_button=: {{ setup 15 }}
game_board_mbldown=: {{
loc=. (20+40*i.5)I.2{._".sysdata
if. 1=#ndx=. loc -. 0 5 do.
side=. 2#.<:>.loc%4 NB. _2: left, _1 top, 1 bottom, 2 right
draw rotate side, ndx
end.
}}
NB. game logic
BOARD=: WIN=: 1+i.4 4
message=: {{
color=. (COUNT>#SETUP){::;:'black red'
A=. '<span style="color: ',color,'">' [Z=. '</span>'
if. BOARD-:WIN do. A,'You win',Z return. end.
A,(":COUNT),Z,' of ',":#SETUP
}}
setup=: {{ game_restart_button SETUP=: (_2 _1 1 2{~?y#4),.1+?y#4 }}
rotate=: {{
COUNT=: COUNT+1
'side ndx'=. y-0 1
flip=. |: if. 2=|side do. flip=. ] end.
BOARD=: flip ((*side)|.ndx{flip BOARD) ndx} flip BOARD
}}
NB. rendering
wd {{)n
pc game closeok;
cc board isidraw;
set board wh 200 200;
cc msg static center;
bin h;
cc easy button;
set easy tooltip start game which can be completed in 3 moves;
cc hard button;
set hard tooltip start game which can be completed in 15 moves;
bin z; bin h;
cc restart button;
cc reset button;
set reset tooltip set board to initial position, ending any current game;
pshow;
}}
draw=: {{
glclear''
glbrush glrgb 3#224 NB. silver
glrect 0 0 200 200
glbrush glrgb 0 0 255 NB. blue
glrect T=:20 20 40 40+"1]40*4 4 1 1#:i.4 4
glbrush glrgb 255 255 0 NB. yellow
glpolygon (,200-])(,;"1@(_2<@|.\"1]))0 30 0 50 10 40+"1(i.4)*/6$0 40
gltextcolor glrgb 3#255 NB. white
glfont '"lucidia console" 16'
BOARD {{ gltext ":x [ gltextxy y+5 0*_1^1<#":x }}"_2(30+40*4 4#:|:i.4 4)
if. EMPTY-:SETUP do.
wd {{)n
set msg text <b>easy</b> or <b>hard</b> to start;
set restart enable 0;
set restart caption;
}} else. wd {{)n
set msg text MESSAGE;
set restart enable 1;
set restart caption restart;
}} rplc 'MESSAGE';message''
end.
glpaint''
}}
NB. start:
game_reset_button''</syntaxhighlight>
=={{header|Javascript}}==
Line 357 ⟶ 721:
}
</pre>
<
class Puzzle {
constructor() {
Line 511 ⟶ 875:
new Puzzle();
</syntaxhighlight>
=={{header|Julia}}==
<
function puzzle16app(bsize)
Line 624 ⟶ 988:
puzzle16app(4)
</syntaxhighlight>
=={{header|Nim}}==
Line 630 ⟶ 994:
{{libheader|gintro}}
Not a direct translation as there are a lot of differences, but, at least, the graphical interface is similar and the logic is the same.
<
import gintro/[glib, gobject, gtk, gio]
Line 823 ⟶ 1,187:
let app = newApplication(PuzzleApp, "Rosetta.Puzzle16Game")
discard app.connect("activate", activate)
discard app.run()</
=={{header|Perl}}==
<
use strict; # http://www.rosettacode.org/wiki/16_Puzzle_Game
Line 913 ⟶ 1,277:
@again = @board;
$message = $steps = 0;
}</
=={{header|Phix}}==
NB arrow keys not tested on linux, but "UDLR" should work...
<!--<
<span style="color: #008080;">constant</span> <span style="color: #000000;">level</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">5<span style="color: #0000FF;">,</span>
<span style="color: #000000;">ESC<span style="color: #0000FF;">=<span style="color: #000000;">27<span style="color: #0000FF;">,</span> <span style="color: #000000;">UP<span style="color: #0000FF;">=<span style="color: #000000;">328<span style="color: #0000FF;">,</span> <span style="color: #000000;">DOWN<span style="color: #0000FF;">=<span style="color: #000000;">336<span style="color: #0000FF;">,</span> <span style="color: #000000;">LEFT<span style="color: #0000FF;">=<span style="color: #000000;">331<span style="color: #0000FF;">,</span> <span style="color: #000000;">RIGHT<span style="color: #0000FF;">=<span style="color: #000000;">333</span>
Line 988 ⟶ 1,352:
<span style="color: #008080;">if</span> <span style="color: #000000;">d<span style="color: #0000FF;">=<span style="color: #000000;">0</span> <span style="color: #008080;">then</span> <span style="color: #008080;">exit</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">while
<!--</
{{out}}
(a level 2 game)
Line 1,016 ⟶ 1,380:
Solved!
</pre>
=={{header|Raku}}==
For brevity, changed to zero-based and skipped some error handling.
{{trans|Go}}
<syntaxhighlight lang="raku" line># 20210914 Raku programming solution
my (\easy,\hard) = 1,4 ; my @n = ^16; my \level = $ = easy ; my \moves = $ = 0;
sub hasWon { @n eq ^16 }
sub setDiff($level) {
say "\nTarget is ", ( moves = $level == hard ?? 12 !! 3 ).Str, " moves.";
for ^moves {
my \s = (^4).roll;
@n[ ( [ s, s+4 ... s+12 ] , [ s*4 .. s*4+3 ] ).roll ] .= rotate ;
redo if hasWon
}
}
sub drawGrid {
say "\n U1 U2 U3 U4";
say " ╔════╦════╦════╦════╗";
printf "L1 ║ %2d ║ %2d ║ %2d ║ %2d ║ R1\n", @n[0..3];
say " ╠════╬════╬════╬════╣";
printf "L2 ║ %2d ║ %2d ║ %2d ║ %2d ║ R2\n", @n[4..7];
say " ╠════╬════╬════╬════╣";
printf "L3 ║ %2d ║ %2d ║ %2d ║ %2d ║ R3\n", @n[8..11];
say " ╠════╬════╬════╬════╣";
printf "L4 ║ %2d ║ %2d ║ %2d ║ %2d ║ R4\n", @n[12..15];
say " ╚════╩════╩════╩════╝";
say " D1 D2 D3 D4\n"
}
sub init {
loop {
print "Enter difficulty level easy or hard E/H : ";
given $*IN.get.uc {
when 'E'|'H' { level = $_ eq 'H' ?? hard !! easy ; last }
default { say "Invalid response, try again." }
}
}
setDiff(level);
moves = 0;
}
init;
loop {
drawGrid;
if hasWon() {
say "Congratulations, you have won the game in {moves} moves.\n" and exit
}
say "When entering moves, you can also enter Q to quit or S to start again.";
say "\nMoves so far = {moves}\n";
print "Enter move : " ;
given $*IN.get.uc {
my \c = .substr(*-1).ord - 49 ; moves++ ;
when 'D1'|'D2'|'D3'|'D4' { @n[ (12,8,4,0) >>+>> c ] .= rotate }
when 'L1'|'L2'|'L3'|'L4' { @n[ (0,1,2,3) >>+>> 4*c ] .= rotate }
when 'U1'|'U2'|'U3'|'U4' { @n[ (0,4,8,12) >>+>> c ] .= rotate }
when 'R1'|'R2'|'R3'|'R4' { @n[ (3,2,1,0) >>+>> 4*c ] .= rotate }
when 'Q' { exit }
when 'S' { init }
default { say "\nInvalid move, try again." and moves-- }
}
}</syntaxhighlight>
=={{header|REXX}}==
Line 1,023 ⟶ 1,453:
and the answer can be in any case (lower or uppercase).
<br>Not all errors are checked so as to keep the program simpler.
<
sep= copies("─",8); pad=left('',1+length(sep) ) /*pad=9 blanks. SEP is used for msgs.*/
parse arg N hard seed . /*obtain optional arguments from the CL*/
Line 1,109 ⟶ 1,539:
say pad ind bot; say;
say translate(col, '+', "-") ind ind ind "+ means shift a column up"; say
return</
{{out|output|text= when using the default inputs:}}
<pre>
Line 1,164 ⟶ 1,594:
=={{header|Ring}}==
<
# Project : Sixteen Puzzle Game
Line 1,692 ⟶ 2,122:
psave()
return
</syntaxhighlight>
Output image:
[https://www.dropbox.com/s/dy1zmw6xpo2o55v/CalmoSoftSixteenPuzzleGame.jpg?dl=0 16 Puzzle Game]
=={{header|Wren}}==
{{trans|Go}}
{{libheader|Wren-iterate}}
{{libheader|Wren-fmt}}
{{libheader|Wren-ioutil}}
{{libheader|Wren-str}}
<syntaxhighlight lang="wren">import "random" for Random
import "./iterate" for Stepped
import "./fmt" for Fmt
import "./ioutil" for Input
import "./str" for Str
var rand = Random.new()
var easy = 1
var hard = 4
var n = List.filled(16, 0)
var initGrid = Fn.new {
for (i in 0..15) n[i] = i + 1
}
var rotate = Fn.new { |ix|
var last = n[ix[3]]
for (i in 3..1) n[ix[i]] = n[ix[i-1]]
n[ix[0]] = last
}
var hasWon = Fn.new {
for (i in 0...15) {
if (n[i] != i+1) return false
}
return true
}
var setDiff = Fn.new { |level|
var moves = (level == easy) ? 3 : 12
var rc = []
var i = 0
while (i < moves) {
rc.clear()
var r = rand.int(2)
var s = rand.int(4)
if (r == 0) { // rotate random row
for (j in s*4...(s+1)*4) rc.add(j)
} else { // rotate random column
for (j in Stepped.new(s...s+16, 4)) rc.add(j)
}
var rca = rc.toList
rotate.call(rca)
if (hasWon.call()) { // do it again
i = -1
}
i = i + 1
}
System.print("Target is %(moves) moves.")
}
var drawGrid = Fn.new {
System.print()
System.print(" D1 D2 D3 D4")
System.print(" ╔════╦════╦════╦════╗")
Fmt.print ("R1 ║ $2d ║ $2d ║ $2d ║ $2d ║ L1", n[0], n[1], n[2], n[3])
System.print(" ╠════╬════╬════╬════╣")
Fmt.print ("R2 ║ $2d ║ $2d ║ $2d ║ $2d ║ L2", n[4], n[5], n[6], n[7])
System.print(" ╠════╬════╬════╬════╣")
Fmt.print ("R3 ║ $2d ║ $2d ║ $2d ║ $2d ║ L3", n[8], n[9], n[10], n[11])
System.print(" ╠════╬════╬════╬════╣")
Fmt.print ("R4 ║ $2d ║ $2d ║ $2d ║ $2d ║ L4", n[12], n[13], n[14], n[15])
System.print(" ╚════╩════╩════╩════╝")
System.print(" U1 U2 U3 U4\n")
}
initGrid.call()
var level = easy
var diff = Input.option("Enter difficulty level easy or hard E/H : ", "eEhH")
if (diff == "h" || diff == "H") level = hard
setDiff.call(level)
var ix = List.filled(4, 0)
System.print("When entering moves, you can also enter Q to quit or S to start again.")
var moves = 0
while (true) {
drawGrid.call()
if (hasWon.call()) {
System.print("Congratulations, you have won the game in %(moves) moves!!")
return
}
while (true) {
System.print("Moves so far = %(moves)\n")
var move = Str.upper(Input.text("Enter move : ", 1).trim())
if (move == "D1" || move == "D2" || move == "D3" || move == "D4") {
var c = move[1].bytes[0] - 49
ix[0] = 0 + c
ix[1] = 4 + c
ix[2] = 8 + c
ix[3] = 12 + c
rotate.call(ix)
moves = moves + 1
break
} else if (move == "L1" || move == "L2" || move == "L3" || move == "L4") {
var c = move[1].bytes[0] - 49
ix[0] = 3 + 4*c
ix[1] = 2 + 4*c
ix[2] = 1 + 4*c
ix[3] = 0 + 4*c
rotate.call(ix)
moves = moves + 1
break
} else if (move == "U1" || move == "U2" || move == "U3" || move == "U4") {
var c = move[1].bytes[0] - 49
ix[0] = 12 + c
ix[1] = 8 + c
ix[2] = 4 + c
ix[3] = 0 + c
rotate.call(ix)
moves = moves + 1
break
} else if (move == "R1" || move == "R2" || move == "R3" || move == "R4") {
var c = move[1].bytes[0] - 49
ix[0] = 0 + 4*c
ix[1] = 1 + 4*c
ix[2] = 2 + 4*c
ix[3] = 3 + 4*c
rotate.call(ix)
moves = moves + 1
break
} else if (move == "Q") {
return
} else if (move == "S") {
initGrid.call()
setDiff.call(level)
moves = 0
break
} else {
System.print("Invalid move, try again.")
}
}
}</syntaxhighlight>
{{out}}
Sample (very easy!) game:
<pre>
Enter difficulty level easy or hard E/H : e
Target is 3 moves.
When entering moves, you can also enter Q to quit or S to start again.
D1 D2 D3 D4
╔════╦════╦════╦════╗
R1 ║ 3 ║ 4 ║ 1 ║ 2 ║ L1
╠════╬════╬════╬════╣
R2 ║ 5 ║ 6 ║ 7 ║ 8 ║ L2
╠════╬════╬════╬════╣
R3 ║ 9 ║ 10 ║ 11 ║ 12 ║ L3
╠════╬════╬════╬════╣
R4 ║ 16 ║ 13 ║ 14 ║ 15 ║ L4
╚════╩════╩════╩════╝
U1 U2 U3 U4
Moves so far = 0
Enter move : l1
D1 D2 D3 D4
╔════╦════╦════╦════╗
R1 ║ 4 ║ 1 ║ 2 ║ 3 ║ L1
╠════╬════╬════╬════╣
R2 ║ 5 ║ 6 ║ 7 ║ 8 ║ L2
╠════╬════╬════╬════╣
R3 ║ 9 ║ 10 ║ 11 ║ 12 ║ L3
╠════╬════╬════╬════╣
R4 ║ 16 ║ 13 ║ 14 ║ 15 ║ L4
╚════╩════╩════╩════╝
U1 U2 U3 U4
Moves so far = 1
Enter move : l1
D1 D2 D3 D4
╔════╦════╦════╦════╗
R1 ║ 1 ║ 2 ║ 3 ║ 4 ║ L1
╠════╬════╬════╬════╣
R2 ║ 5 ║ 6 ║ 7 ║ 8 ║ L2
╠════╬════╬════╬════╣
R3 ║ 9 ║ 10 ║ 11 ║ 12 ║ L3
╠════╬════╬════╬════╣
R4 ║ 16 ║ 13 ║ 14 ║ 15 ║ L4
╚════╩════╩════╩════╝
U1 U2 U3 U4
Moves so far = 2
Enter move : l4
D1 D2 D3 D4
╔════╦════╦════╦════╗
R1 ║ 1 ║ 2 ║ 3 ║ 4 ║ L1
╠════╬════╬════╬════╣
R2 ║ 5 ║ 6 ║ 7 ║ 8 ║ L2
╠════╬════╬════╬════╣
R3 ║ 9 ║ 10 ║ 11 ║ 12 ║ L3
╠════╬════╬════╬════╣
R4 ║ 13 ║ 14 ║ 15 ║ 16 ║ L4
╚════╩════╩════╩════╝
U1 U2 U3 U4
Congratulations, you have won the game in 3 moves!!
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