rnb1k2r/1p5p/p2P1p2/q2pp1p1/P1P3n1/2QP4/4PPBP/RNB1K1NR b KQkq - 3 13
FEN state: rnb1k2r/1p5p/p2P1p2/q2pp1p1/P1P3n1/2QP4/4PPBP/RNB1K1NR b KQkq - 3 13 ; Best move: a5c5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at b7 and black pawn at h7. Black pawn at a6, white pawn at d6 and black pawn at f6. Black queen at a5, black pawn at d5, black pawn at e5 and black pawn at g5. White pawn at a4, white pawn at c4 and black knight at g4. White queen at c3 and white pawn at d3. White pawn at e2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white knight at g1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 3. Full move number is 13. Black to move.