1r1qk1nr/p1p2pb1/1pn4p/3bp3/1P1P1p2/2B2NP1/P1P1P2P/RN1K1BQR w - - 0 21
FEN state: 1r1qk1nr/p1p2pb1/1pn4p/3bp3/1P1P1p2/2B2NP1/P1P1P2P/RN1K1BQR w - - 0 21 ; Best move: g3f4
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at f7 and black bishop at g7. Black pawn at b6, black knight at c6 and black pawn at h6. Black bishop at d5 and black pawn at e5. White pawn at b4, white pawn at d4 and black pawn at f4. White bishop at c3, white knight at f3 and white pawn at g3. White pawn at a2, white pawn at c2, white pawn at e2 and white pawn at h2. White rook at a1, white knight at b1, white king at d1, white bishop at f1, white queen at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.