1n1k1b1r/1b1p1pp1/rpp4p/p3pn2/P1P1P3/3B1PPN/Q4K1P/1NR5 w - - 4 20
FEN state: 1n1k1b1r/1b1p1pp1/rpp4p/p3pn2/P1P1P3/3B1PPN/Q4K1P/1NR5 w - - 4 20 ; Best move: e4f5
The current state of the chess board is: Black knight at b8, black king at d8, black bishop at f8 and black rook at h8. Black bishop at b7, black pawn at d7, black pawn at f7 and black pawn at g7. Black rook at a6, black pawn at b6, black pawn at c6 and black pawn at h6. Black pawn at a5, black pawn at e5 and black knight at f5. White pawn at a4, white pawn at c4 and white pawn at e4. White bishop at d3, white pawn at f3, white pawn at g3 and white knight at h3. White queen at a2, white king at f2 and white pawn at h2. White knight at b1 and white rook at c1. Both players have exhausted their castles. Half move number is 4. Full move number is 20. White to move.