1r1q1bn1/p1p1pp1r/bp2kn1p/6p1/P1Pp2PN/2N4P/1P1PP1B1/R1BQK1R1 w - - 0 21
FEN state: 1r1q1bn1/p1p1pp1r/bp2kn1p/6p1/P1Pp2PN/2N4P/1P1PP1B1/R1BQK1R1 w - - 0 21 ; Best move: a4a5
The current state of the chess board is: Black rook at b8, black queen at d8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at c7, black pawn at e7, black pawn at f7 and black rook at h7. Black bishop at a6, black pawn at b6, black king at e6, black knight at f6 and black pawn at h6. Black pawn at g5. White pawn at a4, white pawn at c4, black pawn at d4, white pawn at g4 and white knight at h4. White knight at c3 and white pawn at h3. White pawn at b2, white pawn at d2, white pawn at e2 and white bishop at g2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white rook at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.