rnbn2r1/2p2qkp/p3p2b/1P1p1Pp1/1P2P3/2PPNP1P/1B3K1R/1R2QBN1 b - - 2 21
FEN state: rnbn2r1/2p2qkp/p3p2b/1P1p1Pp1/1P2P3/2PPNP1P/1B3K1R/1R2QBN1 b - - 2 21 ; Best move: e6f5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black knight at d8 and black rook at g8. Black pawn at c7, black queen at f7, black king at g7 and black pawn at h7. Black pawn at a6, black pawn at e6 and black bishop at h6. White pawn at b5, black pawn at d5, white pawn at f5 and black pawn at g5. White pawn at b4 and white pawn at e4. White pawn at c3, white pawn at d3, white knight at e3, white pawn at f3 and white pawn at h3. White bishop at b2, white king at f2 and white rook at h2. White rook at b1, white queen at e1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. Black to move.