sep> view
 |a|b|c|d|e|f|g|h|
-+-+-+-+-+-+-+-+-+
8|k| |R| | | | | |
-+-+-+-+-+-+-+-+-+
7| |Q| | |p|p| | |
-+-+-+-+-+-+-+-+-+
6|R|P| | | | |p| |
-+-+-+-+-+-+-+-+-+
5| | | | | | | | |
-+-+-+-+-+-+-+-+-+
4| | | | | | | | |
-+-+-+-+-+-+-+-+-+
3| | | | | | | | |
-+-+-+-+-+-+-+-+-+
2| | | | |P|P|P| |
-+-+-+-+-+-+-+-+-+
1| | | | | | | | |
-+-+-+-+-+-+-+-+-+
sep> move c8 b8
--------------------------------------
King could move here: a/7
    Piece a/6 could kill the King with way: 0/1
    Piece b/6 could kill the King with way: -1/1
    Piece b/7 could kill the King with way: -1/0
King could move here: b/7
    Piece b/8 could kill the King with way: 0/-1
King could move here: b/8
    Piece b/7 could kill the King with way: 0/1
--------------------------------------
Lukas checkmate: 0 (should be 1)
--------------------------------------
Rc8-b8++
White(White) wins!