MESON Chess Problem Database

Problem Display
PID: 225588 (7Q/1n3pK1/8/8/2p5/7p/7R/3k4 w - - 0 1)

Lebloch, Ivo

Praca, 1991

7Q/1n3pK1/8/8/2p5/7p/7R/3k4

#2

3 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qxh3?
      • threat
        • 2.Qf1#
      • 1...Kc1
        • 2.Qf1#
      • 1...Ke1!
    • 1.Qh5+?
      • 1...Ke1
        • 2.Qe2#
      • 1...Kc1!
    • 1.Qh6?
      • threat
        • 2.Qd2#
      • 1...Ke1
        • 2.Qc1#
      • 1...c3!
    • 1.Qh7?
      • threat
        • 2.Qb1#
      • 1...Kc1
        • 2.Qc2#
      • 1...Ke1
        • 2.Qb1#
      • 1...f5!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qa1#
      • 1...Kc1
        • 2.Qa1#
      • 1...Ke1
        • 2.Qa1#
      • 1...Sa5
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);XP(b)
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::QAR(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • K(a);P-FLIGHT::QAR(C)
      • Refutation
        • P(e);
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • K(a);P-FLIGHT::QAR(C)
      • S(d);OGATE::QAR(C)
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).