rnb1kb1r/5pp1/qn1pp3/Ppp4p/1P1P2P1/3Q1P1B/N3P2P/1RB1K1NR w K - 10 23
FEN state: rnb1kb1r/5pp1/qn1pp3/Ppp4p/1P1P2P1/3Q1P1B/N3P2P/1RB1K1NR w K - 10 23 ; Best move: a2c3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at f7 and black pawn at g7. Black queen at a6, black knight at b6, black pawn at d6 and black pawn at e6. White pawn at a5, black pawn at b5, black pawn at c5 and black pawn at h5. White pawn at b4, white pawn at d4 and white pawn at g4. White queen at d3, white pawn at f3 and white bishop at h3. White knight at a2, white pawn at e2 and white pawn at h2. White rook at b1, white bishop at c1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 10. Full move number is 23. White to move.