r1b1qknr/1pp1b3/1P5p/3p1pp1/3p2P1/RNBn3P/2PKPP2/3Q1BNR w - - 1 20
FEN state: r1b1qknr/1pp1b3/1P5p/3p1pp1/3p2P1/RNBn3P/2PKPP2/3Q1BNR w - - 1 20 ; Best move: a3a8
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at e8, black king at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7 and black bishop at e7. White pawn at b6 and black pawn at h6. Black pawn at d5, black pawn at f5 and black pawn at g5. Black pawn at d4 and white pawn at g4. White rook at a3, white knight at b3, white bishop at c3, black knight at d3 and white pawn at h3. White pawn at c2, white king at d2, white pawn at e2 and white pawn at f2. White queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 20. White to move.