r1b5/3p1n1r/pp4k1/2b2pqp/N1PPp2P/P2P2P1/5P2/R1BQKB1R b KQ - 0 21
FEN state: r1b5/3p1n1r/pp4k1/2b2pqp/N1PPp2P/P2P2P1/5P2/R1BQKB1R b KQ - 0 21 ; Best move: g5e7
The current state of the chess board is: Black rook at a8 and black bishop at c8. Black pawn at d7, black knight at f7 and black rook at h7. Black pawn at a6, black pawn at b6 and black king at g6. Black bishop at c5, black pawn at f5, black queen at g5 and black pawn at h5. White knight at a4, white pawn at c4, white pawn at d4, black pawn at e4 and white pawn at h4. White pawn at a3, white pawn at d3 and white pawn at g3. White pawn at f2. White rook at a1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 21. Black to move.