r1b1qb1r/1ppnpkp1/p4n2/P2p1p1p/1R3P2/1P4P1/2PPP1BP/1NB1QRKN b - - 13 13
FEN state: r1b1qb1r/1ppnpkp1/p4n2/P2p1p1p/1R3P2/1P4P1/2PPP1BP/1NB1QRKN b - - 13 13 ; Best move: e7e5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at c7, black knight at d7, black pawn at e7, black king at f7 and black pawn at g7. Black pawn at a6 and black knight at f6. White pawn at a5, black pawn at d5, black pawn at f5 and black pawn at h5. White rook at b4 and white pawn at f4. White pawn at b3 and white pawn at g3. White pawn at c2, white pawn at d2, white pawn at e2, white bishop at g2 and white pawn at h2. White knight at b1, white bishop at c1, white queen at e1, white rook at f1, white king at g1 and white knight at h1. Both players have exhausted their castles. Half move number is 13. Full move number is 13. Black to move.