1 files changed, 0 insertions, 50 deletions
diff --git a/challenge-062/sangeet-kar/python/ch-2a.py b/challenge-062/sangeet-kar/python/ch-2a.py
deleted file mode 100755
index 21ed5b6898..0000000000
--- a/challenge-062/sangeet-kar/python/ch-2a.py
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/usr/bin/env python
-
-import sys
-import heapq
-
-# 1. n_queens_3d finds the solution using beam search
-# 2. the higher the beam_width, the better is the solution. 
-# 3. with beam_width=1, it's very fast but the solution may not be optimal maximising the number of queens.
-# 4. with beam-width=-1, it searches the entire search space. Ensures best solution but slow as hell for high n
-# 5. I think one can find the best solution with beam-width 2-3 for n-values less than 8
-
-
-def n_queens_3d (n = 2, beam_width = 2):
-    solutions = []
-    place_queen ([(i, j, k) for i in range(n) for j in range(n) for k in range(n)], 
-                 [], 
-                 solutions, 
-                 beam_width=beam_width)
-    best = max(solutions, key=len)
-    print(f"queens: {len(best)}")
-    return indices_to_array( best, n)
-
-def place_queen (indices, queens, solutions, beam_width=2):
-    if not indices: 
-        solutions.append(queens)
-        return
-    if beam_width == -1:
-        best = ((index, [i for i in indices if is_available(index, i)]) for index in indices)
-    else:
-        best = heapq.nlargest(beam_width, 
-                              ((index, [i for i in indices if is_available(index, i)]) for index in indices), 
-                              key=lambda pair: len(pair[1]))
-    for pos, available in best:
-        place_queen (available, [*queens, pos], solutions, beam_width=beam_width)
-
-def is_available(ref, pos):
-    diff = {abs(i - j) for i, j in zip (ref, pos)}
-    return not ( len(diff) < 2 or (len(diff) == 2 and 0 in diff))
-
-def indices_to_array (indices, n):
-    array = [[[0 for _ in range(n)] for _ in range(n)] for _ in range(n)]
-    for i, j, k in indices:
-        array[i][j][k] = 1
-    return array
-
-n = int(sys.argv[1]) if len(sys.argv) > 1 else 2
-beam_width = int(sys.argv[2]) if len(sys.argv) > 2 else 2
-
-print(n_queens_3d (n, beam_width))
-