rn2kb2/1b1p1pp1/1pp5/pN2p3/1q2n1p1/1P3P2/P1PPK2N/1RBQ1B1R w q - 6 15
FEN state: rn2kb2/1b1p1pp1/1pp5/pN2p3/1q2n1p1/1P3P2/P1PPK2N/1RBQ1B1R w q - 6 15 ; Best move: b5c7
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black bishop at f8. Black bishop at b7, black pawn at d7, black pawn at f7 and black pawn at g7. Black pawn at b6 and black pawn at c6. Black pawn at a5, white knight at b5 and black pawn at e5. Black queen at b4, black knight at e4 and black pawn at g4. White pawn at b3 and white pawn at f3. White pawn at a2, white pawn at c2, white pawn at d2, white king at e2 and white knight at h2. White rook at b1, white bishop at c1, white queen at d1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 6. Full move number is 15. White to move.