MESON Chess Problem Database

Problem Display
PID: 237701 (8/8/8/8/5KB1/8/5kp1/3Q4 w - - 0 1)

Gavrilovski, Zoran

The Problemist, 1988

8/8/8/8/5KB1/8/5kp1/3Q4

#2

3 + 2

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g1Q
      • 2.Qe2#
    • 1...g1B
      • 2.Qe2#
    • 1...g1R
      • 2.Qe2#
  • Tries
    • 1.Bf3?
      • 1...g1Q
        • 2.Qe2#
      • 1...g1B
        • 2.Qe2#
      • 1...g1R
        • 2.Qe2#
      • 1...g1S!
    • 1.Bh5?
      • 1...g1Q
        • 2.Qe2#
      • 1...g1B
        • 2.Qe2#
      • 1...g1R
        • 2.Qe2#
      • 1...g1S!
    • 1.Qf3+?
      • 1...Ke1
        • 2.Qe2#
      • 1...Kg1!
  • Keys
    • 1.Bh3!
      • 1...g1Q
        • 2.Qd2#
      • 1...g1S
        • 2.Qf1#
      • 1...g1B
        • 2.Qf1#
        • 2.Qd2#
      • 1...g1R
        • 2.Qd2#

Anticipated by 193476(1915)

This anticipates 240515(2011)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(b);SBLOCK::QAR1(A)
  • Tries
    • Try
      • B(C);
      • Vars
        • P(b);SBLOCK::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Vars
        • P(b);SBLOCK::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(C);
    • Vars
      • P(b);SBLOCK::QAR2(A)
      • P(b);N_GUARD::QAR1(A)
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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).