CODEWITHSUNDEEP
pythonpython-3.x
Newbiew9232
Newbiew9232

Reputation: 21

Python code for validating chess king movement

I am new to python and practising questions side by side. I came across a problem on snakify.org and solved using below code. Can this code be more simplified?

Problem statement:

Chess king moves horizontally, vertically or diagonally to any adjacent cell. Given two different cells of the chessboard, determine whether a king can go from the first cell to the second in one move. The program receives the input of four numbers from 1 to 8, each specifying the column and row number, first two - for the first cell, and then the last two - for the second cell. The program should output YES if a king can go from the first cell to the second in one move, or NO otherwise.

I tried this solution on various possible sets and works fine but still, wonder if the lines of code could be reduced?

x1 = int(input())
y1 = int(input())
x2 = int(input())
y2 = int(input())
def xcell(x1,x2):
    x=0
    if x1 -x2 > 0:
        x = x1 - x2
    elif  x1-x2 < 0:
        x = x2-x1
    else: x
    return x
def ycell(y1,y2):
    y=0
    if y1 -y2 >= 0:
        y = y1 - y2
    elif  y1-y2 < 0:
        y = y2-y1
    else: y
    return y
if ((xcell(x1,x2) == 1) & (ycell(y1,y2) == 0))or ((xcell(x1,x2) == 0) 
    (ycell(y1,y2) == 1))or((xcell(x1,x2) == 1) & (ycell(y1,y2) == 1)):
     print("YES")
else: print("NO")

The expected output is YES if the user provides input 4,4,5,4

Upvotes: 0

Views: 9894

Answers (2)

Aleksei R.
Aleksei R.

Reputation: 1

I am starting learning , I see it like this : `

x1=int(input("Введите значение x1:   "))
 y1=int(input("Введите значение y1:   "))
 x2=int(input("Введите значение x2:   "))
 y2=int(input("Введите значение y2:   "))

 if x1-1 == x2 or x1+1 == x2 and y1 +1 == y2 or y1-1 == y2:
     print("Yes")
 elif x1+1==y2-1 or x1+1==y2+1 and x1-1==y2-1 or x1-1==y2+1:
     print("Yes")
 else:
     print("No")

`

Upvotes: 0

danbanica
danbanica

Reputation: 3038

You can use the abs (absolute value) function to check the movement condition:

x1 = int(input())
y1 = int(input())
x2 = int(input())
y2 = int(input())

valid_move = abs(x1 - x2) <= 1 and abs(y1 - y2) <= 1 and (x1, y1) != (x2, y2)
print("YES" if valid_move else "NO")

Upvotes: 4

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