2b1kb1r/2pq1p2/prnp1Bp1/1P2p2p/QPP3n1/R2PP3/5PPP/1NN1KB1R b Kk - 0 13
FEN state: 2b1kb1r/2pq1p2/prnp1Bp1/1P2p2p/QPP3n1/R2PP3/5PPP/1NN1KB1R b Kk - 0 13 ; Best move: a6b5
The current state of the chess board is: Black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at c7, black queen at d7 and black pawn at f7. Black pawn at a6, black rook at b6, black knight at c6, black pawn at d6, white bishop at f6 and black pawn at g6. White pawn at b5, black pawn at e5 and black pawn at h5. White queen at a4, white pawn at b4, white pawn at c4 and black knight at g4. White rook at a3, white pawn at d3 and white pawn at e3. White pawn at f2, white pawn at g2 and white pawn at h2. White knight at b1, white knight at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside and black kingside castles are available. Half move number is 0. Full move number is 13. Black to move.