rnb1k1nr/p2p3p/3q1p1b/1p2p1p1/3pP1P1/2PP4/PPN1BP1P/R1B1QKR1 w - - 0 13
FEN state: rnb1k1nr/p2p3p/3q1p1b/1p2p1p1/3pP1P1/2PP4/PPN1BP1P/R1B1QKR1 w - - 0 13 ; Best move: b2b4
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 knight at g8 and black rook at h8. Black pawn at a7, black pawn at d7 and black pawn at h7. Black queen at d6, black pawn at f6 and black bishop at h6. Black pawn at b5, black pawn at e5 and black pawn at g5. Black pawn at d4, white pawn at e4 and white pawn at g4. White pawn at c3 and white pawn at d3. White pawn at a2, white pawn at b2, white knight at c2, white bishop at e2, white pawn at f2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at e1, white king at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 13. White to move.