r1bq2kr/p2p1ppp/npp1p3/1Q2b2n/8/P1P1PPP1/1PBPN2P/RNB2K1R b - - 4 12
FEN state: r1bq2kr/p2p1ppp/npp1p3/1Q2b2n/8/P1P1PPP1/1PBPN2P/RNB2K1R b - - 4 12 ; Best move: c6b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at g8 and black rook at h8. Black pawn at a7, black pawn at d7, black pawn at f7, black pawn at g7 and black pawn at h7. Black knight at a6, black pawn at b6, black pawn at c6 and black pawn at e6. White queen at b5, black bishop at e5 and black knight at h5. White pawn at a3, white pawn at c3, white pawn at e3, white pawn at f3 and white pawn at g3. White pawn at b2, white bishop at c2, white pawn at d2, white knight at e2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 12. Black to move.