2r1kb1r/p1p4p/b2qp2n/n2pPP2/1pPP1p1P/1QN1B3/PP2K1R1/1R3BN1 b k - 0 18
FEN state: 2r1kb1r/p1p4p/b2qp2n/n2pPP2/1pPP1p1P/1QN1B3/PP2K1R1/1R3BN1 b k - 0 18 ; Best move: a5b3
The current state of the chess board is: Black rook at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7 and black pawn at h7. Black bishop at a6, black queen at d6, black pawn at e6 and black knight at h6. Black knight at a5, black pawn at d5, white pawn at e5 and white pawn at f5. Black pawn at b4, white pawn at c4, white pawn at d4, black pawn at f4 and white pawn at h4. White queen at b3, white knight at c3 and white bishop at e3. White pawn at a2, white pawn at b2, white king at e2 and white rook at g2. White rook at b1, white bishop at f1 and white knight at g1. Black kingside is the only castle move available. Half move number is 0. Full move number is 18. Black to move.