MESON Chess Problem Database

Problem Display
PID: 231096 (8/8/8/4p3/4Q3/4K3/6rp/7k w - - 0 1)

Brunner, Erich Anselm

Magyar Sakkvilag, 1927

8/8/8/4p3/4Q3/4K3/6rp/7k

#2

2 + 4

3713 Snap 2021
6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg1
      • 2.Qb1#
  • Tries
    • 1.Qf3?
      • 1...Kg1
        • 2.Qd1#
      • 1...e4!
    • 1.Qd5?
      • 1...Kg1
        • 2.Qd1#
      • 1...e4!
    • 1.Qc6?
      • 1...Kg1
        • 2.Qc1#
      • 1...e4!
    • 1.Qb7?
      • 1...Kg1
        • 2.Qb1#
      • 1...e4!
    • 1.Qa8?
      • 1...Kg1
        • 2.Qa1#
      • 1...e4!
  • Keys
    • 1.Kd3!
      • 1...Kg1
        • 2.Qe1#

This anticipates 249874(1975)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINR(b),P-FLIGHT::QAR(B)
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR(B)
      • Refutation
        • P(d);
    • Try
      • Q(B);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR(B)
      • Refutation
        • P(d);N_SPINR(b)
    • Try
      • Q(B);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR(B)
      • Refutation
        • P(d);N_SPINR(b)
    • Try
      • Q(B);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR(B)
      • Refutation
        • P(d);N_SPINR(b)
    • Try
      • Q(B);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR(B)
      • Refutation
        • P(d);N_SPINR(b)
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • K(a);N_SPINR(b),P-FLIGHT::QAR2(B)
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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).