- Added solutions by Cheok-Yin Fung.

- Added solutions by Roger Bell_West.
- Added solutions by Athanasius.
- Added solutions by Matthew Neleigh.
- Added solutions by Jan Krnavek.
- Added solutions by Bruce Gray.
- Added solutions by BarrOff.
- Added solutions by Avery Adams.
- Added solutions by Bob Lied.
- Added solutions by Robert DiCicco.
- Added solutions by Laurent Rosenfeld.
- Added solutions by Jaldhar H. Vyas.

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diff --git a/challenge-211/robert-dicicco/python/ch-1.py b/challenge-211/robert-dicicco/python/ch-1.py
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+++ b/challenge-211/robert-dicicco/python/ch-1.py
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+#!/usr/bin/env python
+'''
+-------------------------------------------
+AUTHOR: Robert DiCicco
+DATE  : 2023-04-09
+Challenge 211 Toeplitz Matrix ( Python )
+-------------------------------------------
+'''
+
+matrx = [ [4, 3, 2, 1],[5, 4, 3, 2],[6, 5, 4, 3], ]
+#matrx = [ [1,2,3],[3,2,1] ]
+
+rows = len(matrx)
+cols = len(matrx[0])
+
+r = 0
+c = 0
+
+outarr = []
+flag = 0
+
+def unique(list1):
+    unique_list = []
+    for x in list1:
+        if x not in unique_list:
+            unique_list.append(x)
+    return unique_list
+
+def CheckDiag(o):
+    global flag
+    arr_u = unique(o)
+    ln = len(arr_u)
+    if (ln != 1)  :
+        flag = -1
+
+def Diag(c,r):
+    outarr = []
+    while r < rows:
+        outarr.append(matrx[r][c])
+        if r ==  rows - 1:
+            CheckDiag(outarr)
+            return
+        else:
+            if c == cols - 1:
+                CheckDiag(outarr)
+                break
+            c += 1
+            r += 1
+
+print("Input: @matrix = ",matrx)
+
+c = 0
+r = 0
+
+while c < cols - 1:
+        Diag(c,r)
+        c += 1
+r = 1
+c = 0
+while r < rows - 1:
+    Diag(c,r)
+    r = r + 1
+
+print("Output: false") if (flag == -1) else print("Output: true")
+
+'''
+-------------------------------------------
+SAMPLE OUTPUT
+python .\Toeplitz.py
+Input: @matrix =  [[4, 3, 2, 1], [5, 4, 3, 2], [6, 5, 4, 3]]
+Output: true
+
+python .\Toeplitz.py
+Input: @matrix =  [[1, 2, 3], [3, 2, 1]]
+Output: false
+-------------------------------------------
+'''
+
+