1rbqkb2/p1p2ppr/4pn2/1p1p1n2/7p/2NBP1PP/PPPPKP2/R1B1Q1NR b - - 5 12
FEN state: 1rbqkb2/p1p2ppr/4pn2/1p1p1n2/7p/2NBP1PP/PPPPKP2/R1B1Q1NR b - - 5 12 ; Best move: b5b4
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at c7, black pawn at f7, black pawn at g7 and black rook at h7. Black pawn at e6 and black knight at f6. Black pawn at b5, black pawn at d5 and black knight at f5. Black pawn at h4. White knight at c3, white bishop at d3, white pawn at e3, white pawn at g3 and white pawn at h3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at d2, white king at e2 and white pawn at f2. White rook at a1, white bishop at c1, white queen at e1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 5. Full move number is 12. Black to move.