1nb1kbr1/r2pqp1p/p1P5/1p2p3/PN2nPp1/6PP/1PP1P1B1/1RBQK1NR b K - 6 15
FEN state: 1nb1kbr1/r2pqp1p/p1P5/1p2p3/PN2nPp1/6PP/1PP1P1B1/1RBQK1NR b K - 6 15 ; Best move: e7b4
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at g8. Black rook at a7, black pawn at d7, black queen at e7, black pawn at f7 and black pawn at h7. Black pawn at a6 and white pawn at c6. Black pawn at b5 and black pawn at e5. White pawn at a4, white knight at b4, black knight at e4, white pawn at f4 and black pawn at g4. White pawn at g3 and white pawn at h3. White pawn at b2, white pawn at c2, white pawn at e2 and white bishop at g2. White rook at b1, white bishop at c1, white queen at d1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 6. Full move number is 15. Black to move.