1rbk1bnr/2q1p1pp/1p1p4/p3np1P/1Pp4R/N1P2PP1/PBQPP3/R3KBN1 b - - 0 13
FEN state: 1rbk1bnr/2q1p1pp/1p1p4/p3np1P/1Pp4R/N1P2PP1/PBQPP3/R3KBN1 b - - 0 13 ; Best move: b6b5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at d8, black bishop at f8, black knight at g8 and black rook at h8. Black queen at c7, black pawn at e7, black pawn at g7 and black pawn at h7. Black pawn at b6 and black pawn at d6. Black pawn at a5, black knight at e5, black pawn at f5 and white pawn at h5. White pawn at b4, black pawn at c4 and white rook at h4. White knight at a3, white pawn at c3, white pawn at f3 and white pawn at g3. White pawn at a2, white bishop at b2, white queen at c2, white pawn at d2 and white pawn at e2. White rook at a1, white king at e1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 13. Black to move.