MESON Chess Problem Database

Problem Display
PID: 136443 (7K/1p6/6Q1/1R6/p2p4/2kP1N1R/2prp3/q1rb4 w - - 0 1)

Lobusov, Andrey Jakovlevic

The Problemist, 1978

7K/1p6/6Q1/1R6/p2p4/2kP1N1R/2prp3/q1rb4

#2

6 + 10

133 The Problemist Supplement 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qc4#
      • 1...Kxd3
        • 2.Sg5#
      • 1...Rxd3
        • 2.Qc7#
      • 1...Qa2!
    • 1.Qb6?
      • threat
        • 2.Qxd4#
      • 1...Rxd3
        • 2.Rc5#
        • 2.Qc5#
        • 2.Qc7#
      • 1...Kxd3!
    • 1.Qc6+?
      • 1...Kxd3
        • 2.Se1#
        • 2.Sg1#
        • 2.Sh2#
        • 2.Sh4#
        • 2.Se5#
        • 2.Sg5#
      • 1...bxc6!
    • 1.Qd6?
      • threat
        • 2.Qxd4#
      • 1...Rxd3
        • 2.Qb4#
        • 2.Qc5#
        • 2.Qc7#
      • 1...Kxd3!
    • 1.Qe6?
      • threat
        • 2.Qc4#
      • 1...Kxd3
        • 2.Se1#
        • 2.Sg1#
        • 2.Sh2#
        • 2.Sh4#
        • 2.Sg5#
      • 1...Rxd3
        • 2.Qc8#
      • 1...Qa2!
    • 1.Qg7?
      • threat
        • 2.Qxd4#
      • 1...Rxd3
        • 2.Qc7#
      • 1...Kxd3!
    • 1.Qg8?
      • threat
        • 2.Qc4#
      • 1...Kxd3
        • 2.Sg5#
      • 1...Rxd3
        • 2.Qc8#
      • 1...Qa2!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qxd4#
      • 1...Kxd3
        • 2.Se5#
      • 1...Rxd3
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • K(g);P-FLIGHT,XP(A)::R(C)+S(B)
        • R(e);SBLOCK,XP(A)::QAR(E)
      • Refutation
        • Q(a);
    • Try
      • Q(E);
      • Threat
        • QAB1(E),XP(i)
      • Refutation
        • K(g);P-FLIGHT,XP(A)
    • Try
      • Q(E);CHECK
      • Refutation
        • P(j);XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAB1(E),XP(i)
      • Refutation
        • K(g);P-FLIGHT,P_SPINP(i),XP(A)
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • R(e);SBLOCK,XP(A)::QAR(E)
      • Refutation
        • Q(a);
    • Try
      • Q(E);P_PINP(i)
      • Threat
        • QAB1(E),XP(i)
      • Vars
        • R(e);SBLOCK,XP(A)::QAR(E)
      • Refutation
        • K(g);N_SPINP(i),P-FLIGHT,XP(A)
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • K(g);P-FLIGHT,XP(A)::R(C)+S(B)
        • R(e);SBLOCK,XP(A)::QAR(E)
      • Refutation
        • Q(a);
  • Actual
    • Q(E);
    • Threat
      • QAB1(E),XP(i)
    • Vars
      • K(g);P-FLIGHT,XP(A)::R(C)+S(B),DCHECK
      • R(e);SBLOCK,XP(A)::QAR(E)
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).