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First solution in Uncategorized category for Pawn Brotherhood by ArkadiuszFrankowiak
def safe_pawns(pawns):
safePawns = 0
for i in pawns:
col, row = list(i)
# pawn in row 1 cannot be protected by others
if row == 1:
continue
# protect by left col pawn
if 'a' not in col:
if chr(ord(col) - 1) + str(int(row) - 1) in pawns:
safePawns += 1
continue
# protect by right col pawn
if 'h' not in col:
if chr(ord(col) + 1) + str(int(row) - 1) in pawns:
safePawns += 1
return safePawns
if __name__ == '__main__':
# These "asserts" using only for self-checking and not necessary for
# auto-testing
assert safe_pawns({"b4", "d4", "f4", "c3", "e3", "g5", "d2"}) == 6
assert safe_pawns({"b4", "c4", "d4", "e4", "f4", "g4", "e5"}) == 1
Jan. 24, 2016
