rnbqkb2/2ppppp1/7r/1p2n2p/pP2PPP1/P1QP1N2/2P2KBP/R1B2NR1 b - - 3 21
FEN state: rnbqkb2/2ppppp1/7r/1p2n2p/pP2PPP1/P1QP1N2/2P2KBP/R1B2NR1 b - - 3 21 ; Best move: e5f3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at c7, black pawn at d7, black pawn at e7, black pawn at f7 and black pawn at g7. Black rook at h6. Black pawn at b5, black knight at e5 and black pawn at h5. Black pawn at a4, white pawn at b4, white pawn at e4, white pawn at f4 and white pawn at g4. White pawn at a3, white queen at c3, white pawn at d3 and white knight at f3. White pawn at c2, white king at f2, white bishop at g2 and white pawn at h2. White rook at a1, white bishop at c1, white knight at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 3. Full move number is 21. Black to move.