2r1kbnr/n1p1p3/5ppp/p3P3/P1pP1P2/q7/1RPK2PP/1NB1R1N1 w k - 1 23
FEN state: 2r1kbnr/n1p1p3/5ppp/p3P3/P1pP1P2/q7/1RPK2PP/1NB1R1N1 w k - 1 23 ; Best move: b1a3
The current state of the chess board is: Black rook at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black knight at a7, black pawn at c7 and black pawn at e7. Black pawn at f6, black pawn at g6 and black pawn at h6. Black pawn at a5 and white pawn at e5. White pawn at a4, black pawn at c4, white pawn at d4 and white pawn at f4. Black queen at a3. White rook at b2, white pawn at c2, white king at d2, white pawn at g2 and white pawn at h2. White knight at b1, white bishop at c1, white rook at e1 and white knight at g1. Black kingside is the only castle move available. Half move number is 1. Full move number is 23. White to move.