r1b1kn2/p3q1r1/1ppp1n2/4p1pP/2B1p3/2P2P1N/Rb1P2P1/1NB1R1K1 w - - 4 21
FEN state: r1b1kn2/p3q1r1/1ppp1n2/4p1pP/2B1p3/2P2P1N/Rb1P2P1/1NB1R1K1 w - - 4 21 ; Best move: a2b2
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black knight at f8. Black pawn at a7, black queen at e7 and black rook at g7. Black pawn at b6, black pawn at c6, black pawn at d6 and black knight at f6. Black pawn at e5, black pawn at g5 and white pawn at h5. White bishop at c4 and black pawn at e4. White pawn at c3, white pawn at f3 and white knight at h3. White rook at a2, black bishop at b2, white pawn at d2 and white pawn at g2. White knight at b1, white bishop at c1, white rook at e1 and white king at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. White to move.