r3k2r/1pn1n3/2ppp3/3PbpPp/p5P1/6N1/PR1P1N1P/B2QKB1R w Kk - 4 23
FEN state: r3k2r/1pn1n3/2ppp3/3PbpPp/p5P1/6N1/PR1P1N1P/B2QKB1R w Kk - 4 23 ; Best move: b2b7
The current state of the chess board is: Black rook at a8, black king at e8 and black rook at h8. Black pawn at b7, black knight at c7 and black knight at e7. Black pawn at c6, black pawn at d6 and black pawn at e6. White pawn at d5, black bishop at e5, black pawn at f5, white pawn at g5 and black pawn at h5. Black pawn at a4 and white pawn at g4. White knight at g3. White pawn at a2, white rook at b2, white pawn at d2, white knight at f2 and white pawn at h2. White bishop at a1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside and black kingside castles are available. Half move number is 4. Full move number is 23. White to move.