r1b3nr/3p1p2/n5pb/ppp1k3/1Pp4P/4PP1P/P2K4/RN3BNR b - - 3 21
FEN state: r1b3nr/3p1p2/n5pb/ppp1k3/1Pp4P/4PP1P/P2K4/RN3BNR b - - 3 21 ; Best move: e5f6
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at d7 and black pawn at f7. Black knight at a6, black pawn at g6 and black bishop at h6. Black pawn at a5, black pawn at b5, black pawn at c5 and black king at e5. White pawn at b4, black pawn at c4 and white pawn at h4. White pawn at e3, white pawn at f3 and white pawn at h3. White pawn at a2 and white king at d2. White rook at a1, white knight at b1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 3. Full move number is 21. Black to move.