$ gnuchess
GNU Chess 6.2.5
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law.
White (1): coords
Coordinate display enabled
White (1) : d2 d4
1. d2 d4
black KQkq d3
8 r n b q k b n r
7 p p p p p p p p
6 . . . . . . . .
5 . . . . . . . .
4 . . . P . . . .
3 . . . . . . . .
2 P P P . P P P P
1 R N B Q K B N R
a b c d e f g h
Thinking...
white KQkq d6
8 r n b q k b n r
7 p p p . p p p p
6 . . . . . . . .
5 . . . p . . . .
4 . . . P . . . .
3 . . . . . . . .
2 P P P . P P P P
1 R N B Q K B N R
a b c d e f g h
My move is : d5
White (2) : c1 g5
2. c1 g5
black KQkq
8 r n b q k b n r
7 p p p . p p p p
6 . . . . . . . .
5 . . . p . . B .
4 . . . P . . . .
3 . . . . . . . .
2 P P P . P P P P
1 R N . Q K B N R
a b c d e f g h
Thinking...
white KQkq
8 r n b q k b n r
7 p p . . p p p p
6 . . p . . . . .
5 . . . p . . B .
4 . . . P . . . .
3 . . . . . . . .
2 P P P . P P P P
1 R N . Q K B N R
a b c d e f g h
My move is : c6
White (3) : e1 f3
Invalid move: e1 f3
White (3) : b1 c3
3. b1 c3
black KQkq
8 r n b q k b n r
7 p p . . p p p p
6 . . p . . . . .
5 . . . p . . B .
4 . . . P . . . .
3 . . N . . . . .
2 P P P . P P P P
1 R . . Q K B N R
a b c d e f g h
Thinking...
white KQkq
8 r n b q k b n r
7 p p . . p . p p
6 . . p . . p . .
5 . . . p . . B .
4 . . . P . . . .
3 . . N . . . . .
2 P P P . P P P P
1 R . . Q K B N R
a b c d e f g h
My move is : f6