r1b1kbr1/1p1pp3/n6n/N1p2p1p/2B1P1p1/1PPQ1P1N/P2P2PP/1RB2K1R b q - 4 15
FEN state: r1b1kbr1/1p1pp3/n6n/N1p2p1p/2B1P1p1/1PPQ1P1N/P2P2PP/1RB2K1R b q - 4 15 ; Best move: g4h3
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at b7, black pawn at d7 and black pawn at e7. Black knight at a6 and black knight at h6. White knight at a5, black pawn at c5, black pawn at f5 and black pawn at h5. White bishop at c4, white pawn at e4 and black pawn at g4. White pawn at b3, white pawn at c3, white queen at d3, white pawn at f3 and white knight at h3. White pawn at a2, white pawn at d2, white pawn at g2 and white pawn at h2. White rook at b1, white bishop at c1, white king at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 4. Full move number is 15. Black to move.