The matches are as follows
[(9, 0), (8, 5), (7, 4), (2, 9), (0, 2), (3, 1), (6, 6), (1, 3), (5, 8), (4, 7)]
Round 0
Chosen matches: [(0, 0), (1, 1), (2, 2), (3, 3), (4, 4), (5, 5), (6, 6), (7, 7), (8, 8), (9, 9)]
Correct pairs in this round:  1
Round 1
Chosen matches: [(0, 9), (1, 5), (2, 7), (3, 2), (4, 8), (5, 3), (6, 6), (7, 4), (8, 0), (9, 1)]
Correct pairs in this round:  2
Round 2
Chosen matches: [(0, 5), (1, 2), (2, 9), (3, 1), (4, 8), (5, 7), (6, 6), (7, 0), (8, 3), (9, 4)]
Correct pairs in this round:  3
Round 3
Chosen matches: [(0, 2), (1, 4), (2, 9), (3, 7), (4, 8), (5, 1), (6, 6), (7, 3), (8, 5), (9, 0)]
Correct pairs in this round:  5
Round 4
Chosen matches: [(0, 1), (1, 0), (2, 9), (3, 7), (4, 8), (5, 4), (6, 6), (7, 2), (8, 5), (9, 3)]
Correct pairs in this round:  3
Round 5
Chosen matches: [(0, 7), (1, 4), (2, 9), (3, 0), (4, 8), (5, 2), (6, 6), (7, 3), (8, 1), (9, 5)]
Correct pairs in this round:  2
Round 6
Chosen matches: [(0, 2), (1, 3), (2, 0), (3, 7), (4, 8), (5, 1), (6, 6), (7, 5), (8, 9), (9, 4)]
Correct pairs in this round:  3
Round 7
Chosen matches: [(0, 2), (1, 9), (2, 3), (3, 4), (4, 8), (5, 7), (6, 6), (7, 1), (8, 5), (9, 0)]
Correct pairs in this round:  4
Round 8
Chosen matches: [(0, 2), (1, 3), (2, 9), (3, 1), (4, 7), (5, 8), (6, 6), (7, 4), (8, 5), (9, 0)]
Correct pairs in this round:  10
All pairs were identified correctly in round 8