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I have to design a relatively simple game-type programm on pascal

It has to generate a way, which the player will have to guess. They way can only go horizontaly or verticaly. Im usign 10x10 array for this. The problems start, when im making the way for player and checking if randomly roled next piece is possible. Im checking if adjescent pieces of next piece are already road. There should only be one piece there, the way hes comming from, and no any other for it not to merge. There the programm stucks in loop;

heres the code

```
program KD;
Uses crt;
Var
mass:array[1..10,1..10] of integer;
mass2: array[1..10,1..10] of integer;
Sx, Sy, TSx, TSy, CSx, CSy, mov, itcheck, itcase, IT,P:integer;
Label start;
Label nextfield;
Label endgen;
Label nextmove;
Label endgame;
function nextmoveitcheck(ITSx, ITSy: integer):integer;
Begin
itcase:=0;
begin
if (itsx=1) or (itsx=10) then
itcase:=(itcase+1);
if (itsy=1) or (itsy=10) then
itcase:=(itcase+1);
end;
Begin
Itcheck:=0;
if (itsx+1<>11) then
Begin
CSx:=(itsx+1);
CSy:=(itsy);
if (mass[CSx][CSy]=1) then
itcheck:=(itcheck+1);
end;
if (itsx-1<>0) then
Begin
CSx:=(itsx-1);
CSy:=(itsy);
if (mass[CSx][CSy]=1) then
itcheck:=(itcheck+1);
end;
if (itsy+1<>11) then
Begin
CSx:=itsx;
CSy:=(itsy+1);
if (mass[CSx][CSy]=1) then
itcheck:=(itcheck+1);
end;
if (itsy-1<>0) then
Begin
CSx:=itsx;
CSy:=(itsy-1);
if (mass[CSx][CSy]=1) then
itcheck:=(itcheck+1);
end;
end;
begin
case itcase of
0:
begin
if (itcheck=4) then
nextmoveitcheck:=1;
if (itcheck>1) then
nextmoveitcheck:=2;
if (itcheck=1) then
nextmoveitcheck:=3;
end;
1:
begin
if (itcheck=3) then
nextmoveitcheck:=1;
if (itcheck=2) then
nextmoveitcheck:=2;
if (itcheck=1) then
nextmoveitcheck:=3;
end;
2:
begin
if (itcheck=2) then
nextmoveitcheck:=1;
if (itcheck=1) then
nextmoveitcheck:=3;
end;
end;
end;
writeln(itcheck);
end;
Begin
begin
for Sx:=1 to 10 do
for Sy:=1 to 10 do
Begin
mass[Sx][Sy]:=0;
mass2[Sx][Sy]:=0;
end;
end;
Mass[1][1]:=1;
mass2[1][1]:=1;
mass[10][10]:=1;
mass2[10][10]:=1;
Start:
Begin
Clrscr;
randomize;
Sx:=1;
Sy:=1;
nextfield:
Begin
mov:=random(4);
Case mov of
0:
Begin
TSx:=(Sx+1);
TSy:=Sy;
end;
1:
Begin
TSx:=(Sx-1);
TSy:=Sy;
end;
2:
begin
TSx:=Sx;
TSy:=(Sy+1);
end;
3:
Begin
TSx:=Sx;
TSy:=(Sy-1);
end;
end;
end;
If (TSx=0) or (TSx=11) or (TSy=0) or (TSy=11) then
goto nextfield;
if (TSx=10) and (TSy=10) then
goto endgen;
IT:=(nextmoveitcheck(Tsx, Tsy));
case it of
1:
Begin
goto start
end;
2:
Begin
goto nextfield
end;
3:
Begin
Sx:=TSx;
Sy:=TSy;
mass[Sx][Sy]:=1;
writeln('Field generation succesfull');
goto nextfield;
end;
end;
endgen:
writeln('Field has been generated, press any key to start!');
readln;
end;
Begin
Sx:=1;
Sy:=1;
nextmove:
Clrscr;
writeln;
for TSx:=1 to 10 do
Begin
writeln;
for TSy:=1 to 10 do
Begin
If (TSx=Sx) and (TSy=Sy) then
write ('S':2);
If ((TSy=Sy+1) or (Tsy=sy-1)) and ((TSx=Sx+1) or (Tsx=Sx-1)) then
write ('P':2)
else
write (mass2[TSx][TSy]:2);
end;
end;
end;
Begin
writeln;
writeln('Your current possition is ' ,Sx, ' and ' ,Sy);
Writeln('please input two numbers betwen 1 to 10');
Readln(CSx);
Readln(Csy);
If (CSy=23) then
Begin
Begin
For TSx:=1 to 10 do
Begin
writeln;
For TSy:=1 to 10 do
Begin
write(mass[TSx][TSy]:2);
end;
end;
end;
readln;
end;
if (CSy=0) or (Csy=11) or (Csx=0) or (Csx=11) then
Begin
writeln('impossible move, press any key to try again');
readln;
goto nextmove;
end;
If (Csy<>Sy+1) or (Csy<>Sy-1) then
Begin
writeln('impossible move, press any key to try again');
readln;
goto nextmove;
end;
If (CSx<>Sx+1) or (CSx<>Sx-1) then
Begin
writeln('impossible move, press any key to try again');
readln;
goto nextmove;
end;
if (CSy=10) and (CSx=10) then
goto endgame;
If (mass[Csx][Csy]=1) then
Begin
writeln('You move on, press any key to continue');
Mass2[Sx][Sy]:=1;
Sx:=Csx;
Sy:=csy;
readln;
goto nextmove;
end;
if (mass[CSx][CSy]=0) then
Begin
writeln('Incorect move, try again! (Press any key to continue)');
readln;
goto nextmove;
end;
end;
endgame:
Begin
writeln('You have won the game! congratz!');
writeln('Press 1 to quit, press any key to play again!');
readln(P);
if P<>1 then
goto start;
end;
end.
```