1r5r/ppqkpp1p/3pb1pb/2B1P3/P1p3nN/RPP2P1P/4P1P1/2QNKB1R b K - 0 21
FEN state: 1r5r/ppqkpp1p/3pb1pb/2B1P3/P1p3nN/RPP2P1P/4P1P1/2QNKB1R b K - 0 21 ; Best move: h6c1
The current state of the chess board is: Black rook at b8 and black rook at h8. Black pawn at a7, black pawn at b7, black queen at c7, black king at d7, black pawn at e7, black pawn at f7 and black pawn at h7. Black pawn at d6, black bishop at e6, black pawn at g6 and black bishop at h6. White bishop at c5 and white pawn at e5. White pawn at a4, black pawn at c4, black knight at g4 and white knight at h4. White rook at a3, white pawn at b3, white pawn at c3, white pawn at f3 and white pawn at h3. White pawn at e2 and white pawn at g2. White queen at c1, white knight at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 21. Black to move.