Chess Viewer

Fernando Semprun

Endgames

🔍 Analyse Mode Active

Board
1 s 2 s 3s
Eval: Engine Off Depth: 0
PV: Engine Off

  • 🏃 Analyse Mode: Enter moves manually, Stockfish 17 available with depth 10.

  • 🧠 Stockfish Window: External window, depth 15-25, fixed board. To move manually, enter Analyse Mode first, then go to Stockfish Window if needed.

  • 📱 Mobile/iPad: Use Analyse Mode for best performance.

  • 📖 PGN Mode: Reproduce PGN file and variations. Stockfish Window available for analysis.

  • Definition
  • Rules

Definition

  • King is cut along a file

  • Rook is in front of the pawn

    • In a 1 file cut off, if the king is on the short side, defender switches to lateral checks
    • The pawn on the fifth is a win if defender king is on the long side and the pawn is a central pawn (c,d,e,f)
    • The interesting cases occur when the pawn is on the 4th

Pawn on the 4th Rank

  • Central Pawns (c,d,e,f)

    • 2 file cut off wins
    • 1 file cut off wins with K on the 7th

  • Knight Pawns (b,g)

    • 3 file cut off wins
    • 2 file cut off draws
    • 1 file cut off draws with king on the 6th or 7th

Pawn on the 3rd

  • 3 file cut off wins

Special Thanks to:

  • Paolo Casaschi (pgn4web) even if I have now replaced it with my own program
  • ChessBoard2 and Chess.js, from GitHub
  • Joe Workman and all the people at Weaver's Space, they are incredibly helpful