1nbk2r1/3r3q/pPp2pp1/3pp3/1b2PPPP/P2P4/1P1N1n2/R1B1KB1R b - - 0 21
FEN state: 1nbk2r1/3r3q/pPp2pp1/3pp3/1b2PPPP/P2P4/1P1N1n2/R1B1KB1R b - - 0 21 ; Best move: b4c5
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at d8 and black rook at g8. Black rook at d7 and black queen at h7. Black pawn at a6, white pawn at b6, black pawn at c6, black pawn at f6 and black pawn at g6. Black pawn at d5 and black pawn at e5. Black bishop at b4, white pawn at e4, white pawn at f4, white pawn at g4 and white pawn at h4. White pawn at a3 and white pawn at d3. White pawn at b2, white knight at d2 and black knight at f2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.