r1q2b1r/p1k1ppp1/n1p4n/P2pP2p/2PP2bP/NRQ1KPPR/1P1B4/5BN1 b - - 4 22
FEN state: r1q2b1r/p1k1ppp1/n1p4n/P2pP2p/2PP2bP/NRQ1KPPR/1P1B4/5BN1 b - - 4 22 ; Best move: d5c4
The current state of the chess board is: Black rook at a8, black queen at c8, black bishop at f8 and black rook at h8. Black pawn at a7, black king at c7, black pawn at e7, black pawn at f7 and black pawn at g7. Black knight at a6, black pawn at c6 and black knight at h6. White pawn at a5, black pawn at d5, white pawn at e5 and black pawn at h5. White pawn at c4, white pawn at d4, black bishop at g4 and white pawn at h4. White knight at a3, white rook at b3, white queen at c3, white king at e3, white pawn at f3, white pawn at g3 and white rook at h3. White pawn at b2 and white bishop at d2. White bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 22. Black to move.