MESON Chess Problem Database

Problem Display
PID: 231541 (8/5B2/5k2/5NN1/5R1B/4K3/8/8 w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1927

8/5B2/5k2/5NN1/5R1B/4K3/8/8

#2

6 + 1

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Sf3#
  • Tries
    • 1.Se4+?
      • 1...Ke5
        • 2.Bf6#
      • 1...Kxf7!
    • 1.Sh7+?
      • 1...Ke5
        • 2.Bf6#
      • 1...Kxf7!
    • 1.Bf2?
      • 1...Kxg5
        • 2.Bh4#
      • 1...Ke5!
    • 1.Bg3?
      • 1...Kxg5
        • 2.Bh4#
      • 1...Ke5!
    • 1.Ba2?
      • 1...Ke5
        • 2.Sf3#
        • 2.Sf7#
      • 1...Kg6!
    • 1.Bb3?
      • 1...Ke5
        • 2.Sf3#
        • 2.Sf7#
      • 1...Kg6!
    • 1.Bc4?
      • 1...Ke5
        • 2.Sf3#
        • 2.Sf7#
      • 1...Kg6!
    • 1.Bg8?
      • 1...Ke5
        • 2.Sf3#
      • 1...Kg6!
  • Keys
    • 1.Be1!
      • 1...Ke5
        • 2.Bc3#
      • 1...Kxg5
        • 2.Bh4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT,XB(F)
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT,XB(F)
    • Try
      • B(C);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(F);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(F);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(a);S_FLIGHT::B(C)
      • K(a);OGATEB,S_FLIGHT,XS(E)::B(C)
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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).