rnb1k1n1/2p4r/p2q1P2/RP1p1p1p/5PpP/4B1P1/1PPNP2R/1Q1K1BN1 b q - 6 18
FEN state: rnb1k1n1/2p4r/p2q1P2/RP1p1p1p/5PpP/4B1P1/1PPNP2R/1Q1K1BN1 b q - 6 18 ; Best move: g8f6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black knight at g8. Black pawn at c7 and black rook at h7. Black pawn at a6, black queen at d6 and white pawn at f6. White rook at a5, white pawn at b5, black pawn at d5, black pawn at f5 and black pawn at h5. White pawn at f4, black pawn at g4 and white pawn at h4. White bishop at e3 and white pawn at g3. White pawn at b2, white pawn at c2, white knight at d2, white pawn at e2 and white rook at h2. White queen at b1, white king at d1, white bishop at f1 and white knight at g1. Black queenside is the only castle move available. Half move number is 6. Full move number is 18. Black to move.