1rb1k2r/2qp4/pp3p1n/2p1pp1p/2P5/bP2KQ1P/P3n1P1/R1B2BNR b k - 1 21
FEN state: 1rb1k2r/2qp4/pp3p1n/2p1pp1p/2P5/bP2KQ1P/P3n1P1/R1B2BNR b k - 1 21 ; Best move: e2c1
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8 and black rook at h8. Black queen at c7 and black pawn at d7. Black pawn at a6, black pawn at b6, black pawn at f6 and black knight at h6. Black pawn at c5, black pawn at e5, black pawn at f5 and black pawn at h5. White pawn at c4. Black bishop at a3, white pawn at b3, white king at e3, white queen at f3 and white pawn at h3. White pawn at a2, black knight at e2 and white pawn at g2. White rook at a1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 1. Full move number is 21. Black to move.