2b1k1n1/rnpp1p1r/p2q4/1p2p1p1/1P1b2P1/B3PPRP/P1PKB3/R1QN4 w - - 0 20
FEN state: 2b1k1n1/rnpp1p1r/p2q4/1p2p1p1/1P1b2P1/B3PPRP/P1PKB3/R1QN4 w - - 0 20 ; Best move: e3d4
The current state of the chess board is: Black bishop at c8, black king at e8 and black knight at g8. Black rook at a7, black knight at b7, black pawn at c7, black pawn at d7, black pawn at f7 and black rook at h7. Black pawn at a6 and black queen at d6. Black pawn at b5, black pawn at e5 and black pawn at g5. White pawn at b4, black bishop at d4 and white pawn at g4. White bishop at a3, white pawn at e3, white pawn at f3, white rook at g3 and white pawn at h3. White pawn at a2, white pawn at c2, white king at d2 and white bishop at e2. White rook at a1, white queen at c1 and white knight at d1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.