MESON Chess Problem Database

Problem Display
PID: 227872 (8/8/8/6p1/1p3pB1/bK6/1p3Nkp/1R5N w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1926

8/8/8/6p1/1p3pB1/bK6/1p3Nkp/1R5N

#2

5 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Bh3#
  • Tries
    • 1.Ka2?
      • 1...f3
        • 2.Bh3#
      • 1...b3+!
    • 1.Kc2?
      • 1...f3
        • 2.Bh3#
      • 1...b3+!
    • 1.Ka4?
      • 1...f3
        • 2.Bh3#
      • 1...b3!
    • 1.Kc4?
      • 1...f3
        • 2.Bh3#
      • 1...b3!
  • Keys
    • 1.Sd1!
      • 1...Kf1
        • 2.Se3#
      • 1...Kg1
        • 2.Se3#
      • 1...Kxh1
        • 2.Se3#
      • 1...f3
        • 2.Se3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(f);SBLOCK::B(E)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(f);SBLOCK::B(E)
      • Refutation
        • P(e);CHECK
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(f);SBLOCK::B(E)
      • Refutation
        • P(e);CHECK
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(f);SBLOCK::B(E)
      • Refutation
        • P(e);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(f);SBLOCK::B(E)
      • Refutation
        • P(e);
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT::R(A)+S(C),DCHECK
      • K(b);P-FLIGHT::R(A)+S(C)
      • K(b);S_FLIGHT,XS(B)::R(A)+S(C)
      • P(f);N_GUARD::S(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).