1rbqk2r/ppnpp2p/5pp1/6b1/5PK1/4P1PP/PPPPQ3/1RB2BNR b k - 0 13
FEN state: 1rbqk2r/ppnpp2p/5pp1/6b1/5PK1/4P1PP/PPPPQ3/1RB2BNR b k - 0 13 ; Best move: b7b5
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at b7, black knight at c7, black pawn at d7, black pawn at e7 and black pawn at h7. Black pawn at f6 and black pawn at g6. Black bishop at g5. White pawn at f4 and white king at g4. White pawn at e3, white pawn at g3 and white pawn at h3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at d2 and white queen at e2. White rook at b1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 13. Black to move.