rnb4r/2pkpB1p/6pb/pp6/1P2n1P1/P1P3q1/4PP1P/RNB1KQNR b KQ - 0 18
FEN state: rnb4r/2pkpB1p/6pb/pp6/1P2n1P1/P1P3q1/4PP1P/RNB1KQNR b KQ - 0 18 ; Best move: g3g4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black rook at h8. Black pawn at c7, black king at d7, black pawn at e7, white bishop at f7 and black pawn at h7. Black pawn at g6 and black bishop at h6. Black pawn at a5 and black pawn at b5. White pawn at b4, black knight at e4 and white pawn at g4. White pawn at a3, white pawn at c3 and black queen at g3. White pawn at e2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white queen at f1, white knight at g1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 18. Black to move.