4k2r/2qpbpp1/br5p/pppP3P/PnN1pP1P/1P2P1BN/Q1P5/R3KB1R b KQk - 3 21
FEN state: 4k2r/2qpbpp1/br5p/pppP3P/PnN1pP1P/1P2P1BN/Q1P5/R3KB1R b KQk - 3 21 ; Best move: b5c4
The current state of the chess board is: Black king at e8 and black rook at h8. Black queen at c7, black pawn at d7, black bishop at e7, black pawn at f7 and black pawn at g7. Black bishop at a6, black rook at b6 and black pawn at h6. Black pawn at a5, black pawn at b5, black pawn at c5, white pawn at d5 and white pawn at h5. White pawn at a4, black knight at b4, white knight at c4, black pawn at e4, white pawn at f4 and white pawn at h4. White pawn at b3, white pawn at e3, white bishop at g3 and white knight at h3. White queen at a2 and white pawn at c2. White rook at a1, white king at e1, white bishop at f1 and white rook at h1. White kingside, white queenside and black kingside castles are available. Half move number is 3. Full move number is 21. Black to move.