2r1bbn1/4k3/pqpp2pr/1p3p1p/1P1pP1PP/P2K2R1/N3NP2/n1B1QB2 w - - 0 21
FEN state: 2r1bbn1/4k3/pqpp2pr/1p3p1p/1P1pP1PP/P2K2R1/N3NP2/n1B1QB2 w - - 0 21 ; Best move: g4f5
The current state of the chess board is: Black rook at c8, black bishop at e8, black bishop at f8 and black knight at g8. Black king at e7. Black pawn at a6, black queen at b6, black pawn at c6, black pawn at d6, black pawn at g6 and black rook at h6. Black pawn at b5, black pawn at f5 and black pawn at h5. White pawn at b4, black pawn at d4, white pawn at e4, white pawn at g4 and white pawn at h4. White pawn at a3, white king at d3 and white rook at g3. White knight at a2, white knight at e2 and white pawn at f2. Black knight at a1, white bishop at c1, white queen at e1 and white bishop at f1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.