MESON Chess Problem Database

Problem Display
PID: 214070 (q1n5/1p6/1p6/8/1NQK4/3P4/1P1N4/k2r4 w - - 0 1)

Kozyura, Gennady Volodimirovich

Sachova skladba, 1988

q1n5/1p6/1p6/8/1NQK4/3P4/1P1N4/k2r4

#2

6 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb2
      • 2.Qc3#
    • 1...Qa2
      • 2.Qxa2#
    • 1...Qb8
      • 2.Qa2#
    • 1...Rc1
      • 2.Qxc1#
    • 1...Rxd2
      • 2.Qc1#
    • 1...Sa7
      • 2.Qa2#
  • Tries
    • 1.Sb3+?
      • 1...Kb1
        • 2.Qc2#
      • 1...Kxb2!
  • Keys
    • 1.Qc3!
      • threat
        • 2.b3#
      • 1...Rxd2
        • 2.Qc1#
      • 1...Qa2
        • 2.Sc2#
      • 1...Qa3
        • 2.Qxa3#
        • 2.bxa3#
      • 1...Rb1
        • 2.Sb3#
      • 1...Rc1
        • 2.Qxc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(a);OGATEB,S_FLIGHT,XP(A)::QAB1(E)
    • Q(e);N_GUARD::QAR1(E),XQ(e)
    • Q(e);N_GUARD::QAR1(E)
    • R(b);N_GUARD::QAR2(E),XR(b)
    • R(b);N_GUARD,P_PINP(C),XS(B)::QAR2(E)
    • S(f);S_CUTQ(e)::QAR1(E)
  • Tries
    • Try
      • S(B);CHECK,P_SPINP(C)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XP(A)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)+P(A)
    • Vars
      • R(b);N_GUARD,P_PINP(C),XS(B)::QAR2(E)
      • Q(e);SBLOCK::S(D)
      • R(b);SBLOCK::S(B)
      • R(b);N_GUARD::QAR2(E),XR(b)
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).