1rb3r1/ppp3pp/2k1p2n/2np4/PB1P1NPq/b3PP2/1PP3BP/RN1Q1K1R b - - 12 15
FEN state: 1rb3r1/ppp3pp/2k1p2n/2np4/PB1P1NPq/b3PP2/1PP3BP/RN1Q1K1R b - - 12 15 ; Best move: a3b4
The current state of the chess board is: Black rook at b8, black bishop at c8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at g7 and black pawn at h7. Black king at c6, black pawn at e6 and black knight at h6. Black knight at c5 and black pawn at d5. White pawn at a4, white bishop at b4, white pawn at d4, white knight at f4, white pawn at g4 and black queen at h4. Black bishop at a3, white pawn at e3 and white pawn at f3. White pawn at b2, white pawn at c2, white bishop at g2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 12. Full move number is 15. Black to move.