1r1k1b1r/ppN1pp1p/1qnp4/2p1Pbp1/8/3NK1P1/PPPB1P1P/2R1QB1R w - - 4 20
FEN state: 1r1k1b1r/ppN1pp1p/1qnp4/2p1Pbp1/8/3NK1P1/PPPB1P1P/2R1QB1R w - - 4 20 ; Best move: c7d5
The current state of the chess board is: Black rook at b8, black king at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, white knight at c7, black pawn at e7, black pawn at f7 and black pawn at h7. Black queen at b6, black knight at c6 and black pawn at d6. Black pawn at c5, white pawn at e5, black bishop at f5 and black pawn at g5. White knight at d3, white king at e3 and white pawn at g3. White pawn at a2, white pawn at b2, white pawn at c2, white bishop at d2, white pawn at f2 and white pawn at h2. White rook at c1, white queen at e1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 20. White to move.