r1bnk2r/1pp2p1p/p5qn/3pp1p1/1bP1P1P1/Q3K2B/PP1P1P1P/RNB1N2R b kq - 0 13
FEN state: r1bnk2r/1pp2p1p/p5qn/3pp1p1/1bP1P1P1/Q3K2B/PP1P1P1P/RNB1N2R b kq - 0 13 ; Best move: g6e4
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at d8, black king at e8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at f7 and black pawn at h7. Black pawn at a6, black queen at g6 and black knight at h6. Black pawn at d5, black pawn at e5 and black pawn at g5. Black bishop at b4, white pawn at c4, white pawn at e4 and white pawn at g4. White queen at a3, white king at e3 and white bishop at h3. White pawn at a2, white pawn at b2, white pawn at d2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white knight at e1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 13. Black to move.