1nbq1rn1/r1k2p2/1p1p3b/P1p1P1p1/2P2BP1/P2p1N1B/1Q1N1P1P/R3K2R w KQ - 0 23
FEN state: 1nbq1rn1/r1k2p2/1p1p3b/P1p1P1p1/2P2BP1/P2p1N1B/1Q1N1P1P/R3K2R w KQ - 0 23 ; Best move: b2b6
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black rook at f8 and black knight at g8. Black rook at a7, black king at c7 and black pawn at f7. Black pawn at b6, black pawn at d6 and black bishop at h6. White pawn at a5, black pawn at c5, white pawn at e5 and black pawn at g5. White pawn at c4, white bishop at f4 and white pawn at g4. White pawn at a3, black pawn at d3, white knight at f3 and white bishop at h3. White queen at b2, white knight at d2, white pawn at f2 and white pawn at h2. White rook at a1, white king at e1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 23. White to move.