r5kr/5p2/pp4p1/q1p2bnp/3PP3/PPP2PPP/3KN3/RNB4R w - - 0 21
FEN state: r5kr/5p2/pp4p1/q1p2bnp/3PP3/PPP2PPP/3KN3/RNB4R w - - 0 21 ; Best move: e4f5
The current state of the chess board is: Black rook at a8, black king at g8 and black rook at h8. Black pawn at f7. Black pawn at a6, black pawn at b6 and black pawn at g6. Black queen at a5, black pawn at c5, black bishop at f5, black knight at g5 and black pawn at h5. White pawn at d4 and white pawn at e4. White pawn at a3, white pawn at b3, white pawn at c3, white pawn at f3, white pawn at g3 and white pawn at h3. White king at d2 and white knight at e2. White rook at a1, white knight at b1, white bishop at c1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.