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remove_checking.py
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remove_checking.py
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# remove_checking.py
# project:sudoku
# littzhch
# 20200716
# 20200718
# 20200801
def _core(zero_idxs, current_idx, size, sdk, success):
zero_idx = zero_idxs[current_idx]
nums = sdk.get_possible_nums(zero_idx)
if not nums:
return success
else:
if current_idx == size:
if len(nums) >= 2:
return 2
else:
return success + 1
else:
for num in nums:
sdk.num_update(zero_idx, num)
success = _core(zero_idxs, current_idx + 1, size, sdk, success)
if success >= 2:
return 2
sdk.num_update(zero_idx, 0)
return success
def remove_check(sdk):
sdk.idx_update()
zero_idxs = sdk.zero_idx
size = len(zero_idxs) - 1
success = _core(zero_idxs, 0, size, sdk, 0)
if success >= 2:
return False
return True