1rb2b1r/p1k1n1p1/1p1p3p/1BpPp3/4P3/PP3PR1/2P3q1/R1BQK1N1 w - - 0 21
FEN state: 1rb2b1r/p1k1n1p1/1p1p3p/1BpPp3/4P3/PP3PR1/2P3q1/R1BQK1N1 w - - 0 21 ; Best move: g3g2
The current state of the chess board is: Black rook at b8, black bishop at c8, black bishop at f8 and black rook at h8. Black pawn at a7, black king at c7, black knight at e7 and black pawn at g7. Black pawn at b6, black pawn at d6 and black pawn at h6. White bishop at b5, black pawn at c5, white pawn at d5 and black pawn at e5. White pawn at e4. White pawn at a3, white pawn at b3, white pawn at f3 and white rook at g3. White pawn at c2 and black queen at g2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white knight at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.