MESON Chess Problem Database

Problem Display
PID: 60986 (5K2/8/2P1p3/R2pkBp1/2RN4/2B3pP/2PP1N2/5r2 w - - 0 1)

Guidelli, Giorgio

Good Companions (July), 1917

5K2/8/2P1p3/R2pkBp1/2RN4/2B3pP/2PP1N2/5r2

#2

11 + 6

3132 The Good Companion Two-Mover 1922
14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sd3#
    • 1...Kd6
      • 2.Sb5#
    • 1...Kf6
      • 2.Sg4#
  • Tries
    • 1.Sd3+?
      • 1...Kd6
        • 2.Sb5#
      • 1...Kf6!
    • 1.Sg4+?
      • 1...Kd6
        • 2.Sb5#
      • 1...Kf4!
    • 1.Sf3+?
      • 1...Kd6
        • 2.Be5#
      • 1...Kxf5!
    • 1.Bd3?
      • threat
        • 2.Sf5#
      • 1...Kd6
        • 2.Sb5#
      • 1...Kf6
        • 2.Sg4#
      • 1...Kf4!
    • 1.Bg4?
      • threat
        • 2.Sf5#
      • 1...Kf4
        • 2.Se2#
        • 2.Sxe6#
      • 1...Kd6
        • 2.Sb5#
      • 1...Kf6!
    • 1.Bg6?
      • threat
        • 2.Sf5#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Sb5#
      • 1...Kf6!
  • Keys
    • 1.Bh7!
      • threat
        • 2.Sf5#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Sb5#
      • 1...Kf6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINP(c),S_FLIGHT::S(C)
    • K(d);N_SPINP(c),S_FLIGHT::S(G)
  • Tries
    • Try
      • S(C);CHECK,P_SPINB(I)
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::S(G)
      • Refutation
        • K(d);N_PINB(I),N_SPINP(c),S_FLIGHT
    • Try
      • S(C);CHECK,P_SPINB(I)
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::S(G)
      • Refutation
        • K(d);N_PINB(I),N_SPINP(c),S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::B(D)
      • Refutation
        • K(d);P-FLIGHT,XB(I)
    • Try
      • B(I);P_SPINS(C)
      • Threat
        • B(D)+S(G)
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::S(G)
        • K(d);N_PINS(C),N_SPINP(c),S_FLIGHT::S(C)
      • Refutation
        • K(d);N_PINS(C),N_SPINP(c),S_FLIGHT
    • Try
      • B(I);P_SPINS(C)
      • Threat
        • B(D)+S(G)
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::S(G)
      • Refutation
        • K(d);N_PINS(C),N_SPINP(c),S_FLIGHT
    • Try
      • B(I);P_SPINS(C)
      • Threat
        • B(D)+S(G)
      • Vars
        • K(d);N_PINS(C),N_SPINP(c),S_FLIGHT::S(C)
        • K(d);N_SPINP(c),S_FLIGHT::S(G)
      • Refutation
        • K(d);N_PINS(C),N_SPINP(c),S_FLIGHT
  • Actual
    • B(I);P_SPINS(C)
    • Threat
      • B(D)+S(G)
    • Vars
      • K(d);N_PINS(C),N_SPINP(c),S_FLIGHT::S(C)
      • K(d);N_SPINP(c),S_FLIGHT::S(G)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).