r1b1kbnr/1pp2n2/3ppqpp/p7/4PN1P/3P4/P1P1BPP1/R1B1K1R1 w - - 3 20
FEN state: r1b1kbnr/1pp2n2/3ppqpp/p7/4PN1P/3P4/P1P1BPP1/R1B1K1R1 w - - 3 20 ; Best move: a1b1
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7 and black knight at f7. Black pawn at d6, black pawn at e6, black queen at f6, black pawn at g6 and black pawn at h6. Black pawn at a5. White pawn at e4, white knight at f4 and white pawn at h4. White pawn at d3. White pawn at a2, white pawn at c2, white bishop at e2, white pawn at f2 and white pawn at g2. White rook at a1, white bishop at c1, white king at e1 and white rook at g1. Both players have exhausted their castles. Half move number is 3. Full move number is 20. White to move.