1rbq1br1/ppn5/3p1p2/2p1pk1p/1QP2p2/2BPPPP1/P2N2BP/3R1K1R w - - 0 23
FEN state: 1rbq1br1/ppn5/3p1p2/2p1pk1p/1QP2p2/2BPPPP1/P2N2BP/3R1K1R w - - 0 23 ; Best move: b4b1
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at b7 and black knight at c7. Black pawn at d6 and black pawn at f6. Black pawn at c5, black pawn at e5, black king at f5 and black pawn at h5. White queen at b4, white pawn at c4 and black pawn at f4. White bishop at c3, white pawn at d3, white pawn at e3, white pawn at f3 and white pawn at g3. White pawn at a2, white knight at d2, white bishop at g2 and white pawn at h2. White rook at d1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 23. White to move.