MESON Chess Problem Database

Problem Display
PID: 227849 (8/1nK5/kB6/n7/Q7/8/8/8 w - - 0 1)

Pikler, Robert

Magyar Sakkvilag, 1926

8/1nK5/kB6/n7/Q7/8/8/8

#2

3 + 3

6490 yacpdb 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qxa5#
    • 1...Sd6
      • 2.Qxa5#
    • 1...Sd8
      • 2.Qxa5#
  • Tries
    • 1.Kb8?
      • 1...Sc5
        • 2.Qxa5#
      • 1...Sd6
        • 2.Qxa5#
      • 1...Sd8
        • 2.Qxa5#
      • 1...Kxb6!
    • 1.Qa1?
      • 1...Sd6
        • 2.Qxa5#
      • 1...Sc5
        • 2.Qxa5#
      • 1...Sd8
        • 2.Qxa5#
      • 1...Kb5!
    • 1.Qa2?
      • 1...Sd6
        • 2.Qxa5#
      • 1...Sc5
        • 2.Qxa5#
      • 1...Sd8
        • 2.Qxa5#
      • 1...Kb5!
    • 1.Qa3?
      • 1...Sd6
        • 2.Qxa5#
      • 1...Sc5
        • 2.Qxa5#
      • 1...Sd8
        • 2.Qxa5#
      • 1...Kb5!
  • Keys
    • 1.Qb4!
      • 1...Sd6
        • 2.Qxa5#
      • 1...Sb3
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc6
        • 2.Qc4#
      • 1...Sc5
        • 2.Qxa5#
      • 1...Sd8
        • 2.Qxa5#

This anticipates 186730(1933)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAR1(A),XS(a)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • S(c);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT,XB(B)
    • Try
      • Q(A);
      • Vars
        • S(c);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(c);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(c);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
  • Actual
    • Q(A);N_PINS(a)
    • Vars
      • S(c);N_GUARD::QAR1(A),XS(a)
      • S(a);N_GUARD::QAB(A)
      • S(a);N_GUARD::QAB(A),XS(a)
HTML5 logo

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).