MESON Chess Problem Database

Problem Display
PID: 101687 (8/8/4p3/1PBk4/1P6/4K3/4Q3/7b w - - 0 1)

Tohanean, Gheorghe

diagrammes, 1989

8/8/4p3/1PBk4/1P6/4K3/4Q3/7b

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qa2#
  • Tries
    • 1.Kf4?
      • threat
        • 2.Qd3#
        • 2.Qa2#
      • 1...Be4
        • 2.Qa2#
        • 2.Qxe4#
      • 1...e5+!
    • 1.Qd1+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke5!
    • 1.Qh5+?
      • 1...e5
        • 2.Qf7#
      • 1...Kc4!
    • 1.Qb2?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Qa2#
        • 2.Qb3#
      • 1...Kc4!
    • 1.Qd2+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke5!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qd4#
      • 1...Ke5
        • 2.Qg5#
      • 1...Be4
        • 2.Qxe4#
      • 1...e5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB(A)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);CHECK
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • B(a);N_GUARD::QAB1(A),XB(a)
      • P(c);OGATEB,SBLOCK::QAB(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).