r4b1r/pp1b1k1p/nnp1p1p1/3p1pP1/P2P1P2/1P2B1q1/2P1PN1P/RN1QKB1R b Q - 2 18
FEN state: r4b1r/pp1b1k1p/nnp1p1p1/3p1pP1/P2P1P2/1P2B1q1/2P1PN1P/RN1QKB1R b Q - 2 18 ; Best move: g3e3
The current state of the chess board is: Black rook at a8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black bishop at d7, black king at f7 and black pawn at h7. Black knight at a6, black knight at b6, black pawn at c6, black pawn at e6 and black pawn at g6. Black pawn at d5, black pawn at f5 and white pawn at g5. White pawn at a4, white pawn at d4 and white pawn at f4. White pawn at b3, white bishop at e3 and black queen at g3. White pawn at c2, white pawn at e2, white knight at f2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White queenside is the only castle move available. Half move number is 2. Full move number is 18. Black to move.