rn2k1nr/1pp1b1p1/p2qbp2/3P1P1p/P1PPp2P/5QPR/1P1NK3/R1B2BN1 b q - 3 17
FEN state: rn2k1nr/1pp1b1p1/p2qbp2/3P1P1p/P1PPp2P/5QPR/1P1NK3/R1B2BN1 b q - 3 17 ; Best move: e4f3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7, black bishop at e7 and black pawn at g7. Black pawn at a6, black queen at d6, black bishop at e6 and black pawn at f6. White pawn at d5, white pawn at f5 and black pawn at h5. White pawn at a4, white pawn at c4, white pawn at d4, black pawn at e4 and white pawn at h4. White queen at f3, white pawn at g3 and white rook at h3. White pawn at b2, white knight at d2 and white king at e2. White rook at a1, white bishop at c1, white bishop at f1 and white knight at g1. Black queenside is the only castle move available. Half move number is 3. Full move number is 17. Black to move.