rnb1q1r1/pppp2pp/k4p2/4pn1P/1QP2PPb/3P3R/PP2P3/RNK2BN1 w - - 15 20
FEN state: rnb1q1r1/pppp2pp/k4p2/4pn1P/1QP2PPb/3P3R/PP2P3/RNK2BN1 w - - 15 20 ; Best move: b4b5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at e8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black pawn at g7 and black pawn at h7. Black king at a6 and black pawn at f6. Black pawn at e5, black knight at f5 and white pawn at h5. White queen at b4, white pawn at c4, white pawn at f4, white pawn at g4 and black bishop at h4. White pawn at d3 and white rook at h3. White pawn at a2, white pawn at b2 and white pawn at e2. White rook at a1, white knight at b1, white king at c1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 15. Full move number is 20. White to move.