1nb1k1nr/1p1pp1b1/1rp2p1p/q3Q1p1/2P4P/Np1KP3/P2P1PPN/BR3BR1 w k - 0 21
FEN state: 1nb1k1nr/1p1pp1b1/1rp2p1p/q3Q1p1/2P4P/Np1KP3/P2P1PPN/BR3BR1 w k - 0 21 ; Best move: e5a5
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at d7, black pawn at e7 and black bishop at g7. Black rook at b6, black pawn at c6, black pawn at f6 and black pawn at h6. Black queen at a5, white queen at e5 and black pawn at g5. White pawn at c4 and white pawn at h4. White knight at a3, black pawn at b3, white king at d3 and white pawn at e3. White pawn at a2, white pawn at d2, white pawn at f2, white pawn at g2 and white knight at h2. White bishop at a1, white rook at b1, white bishop at f1 and white rook at g1. Black kingside is the only castle move available. Half move number is 0. Full move number is 21. White to move.