r3kb2/1qn5/1ppp1nN1/p3p3/PPPPP1bp/3B2P1/1Q3P1P/R1B1K1R1 b q - 4 21
FEN state: r3kb2/1qn5/1ppp1nN1/p3p3/PPPPP1bp/3B2P1/1Q3P1P/R1B1K1R1 b q - 4 21 ; Best move: c7e6
The current state of the chess board is: Black rook at a8, black king at e8 and black bishop at f8. Black queen at b7 and black knight at c7. Black pawn at b6, black pawn at c6, black pawn at d6, black knight at f6 and white knight at g6. Black pawn at a5 and black pawn at e5. White pawn at a4, white pawn at b4, white pawn at c4, white pawn at d4, white pawn at e4, black bishop at g4 and black pawn at h4. White bishop at d3 and white pawn at g3. White queen at b2, white pawn at f2 and white pawn at h2. White rook at a1, white bishop at c1, white king at e1 and white rook at g1. Black queenside is the only castle move available. Half move number is 4. Full move number is 21. Black to move.