MESON Chess Problem Database

Problem Display
PID: 225738 (6QK/7B/8/3N1r2/4k3/5N2/2R5/1n6 w - - 0 1)

Rybarczyk, Henryk

Praca, 1995

6QK/7B/8/3N1r2/4k3/5N2/2R5/1n6

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Bxf5#
    • 1...Kxf3
      • 2.Qg2#
  • Tries
    • 1.Bxf5+?
      • 1...Kxf3
        • 2.Qg2#
        • 2.Qg4#
      • 1...Kxf5!
    • 1.Rd2?
      • threat
        • 2.Qg4#
      • 1...Kxf3
        • 2.Qg2#
      • 1...Sxd2!
    • 1.Re2+?
      • 1...Kxf3
        • 2.Qg2#
      • 1...Kd3!
    • 1.Qe6+?
      • 1...Kd3
        • 2.Sb4#
        • 2.Bxf5#
        • 2.Qxf5#
        • 2.Qe2#
      • 1...Kxf3!
    • 1.Qf7?
      • threat
        • 2.Qxf5#
      • 1...Kd3
        • 2.Bxf5#
        • 2.Qxf5#
      • 1...Kxf3!
    • 1.Qg4+?
      • 1...Kd3
        • 2.Se1#
        • 2.Bxf5#
        • 2.Qxf5#
        • 2.Qc4#
      • 1...Kxd5!
    • 1.Qg5?
      • threat
        • 2.Qxf5#
      • 1...Kd3
        • 2.Bxf5#
        • 2.Qxf5#
      • 1...Kxf3
        • 2.Qg2#
      • 1...Kxd5!
    • 1.Qc8?
      • threat
        • 2.Qxf5#
      • 1...Kd3
        • 2.Bxf5#
        • 2.Qxf5#
        • 2.Qc4#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kxf3!
    • 1.Qe8+?
      • 1...Kd3
        • 2.Sb4#
        • 2.Bxf5#
        • 2.Qe2#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kxf3!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qxf5#
      • 1...Kd3
        • 2.Qxf5#
      • 1...Kxf3
        • 2.Qg2#
      • 1...Kxd5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(D),XR(c)
    • K(b);N_SPINR(c),OGATEB,S_FLIGHT,XS(B)::QAB1(E)
  • Tries
    • Try
      • B(D);CHECK,XR(c)
      • Refutation
        • K(b);S_FLIGHT,XB(D)
    • Try
      • R(A);
      • Threat
        • QAR2(E)
      • Vars
        • K(b);N_SPINR(c),OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • Refutation
        • S(a);XR(A)
    • Try
      • R(A);CHECK
      • Vars
        • K(b);N_SPINR(c),S_FLIGHT,XS(B)::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);N_SPINR(c),S_FLIGHT,XS(B)
    • Try
      • Q(E);
      • Threat
        • QAB1(E),XR(c)
      • Refutation
        • K(b);S_FLIGHT,XS(B)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);N_SPINR(c),S_FLIGHT,XS(C)
    • Try
      • Q(E);
      • Threat
        • QAB1(E),XR(c)
      • Vars
        • K(b);N_SPINR(c),OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(E);
      • Threat
        • QAB1(E),XR(c)
      • Vars
        • K(b);N_SPINR(c),OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • Refutation
        • K(b);N_SPINR(c),S_FLIGHT,XS(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);N_SPINR(c),OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • Refutation
        • K(b);N_SPINR(c),S_FLIGHT,XS(B)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E),XR(c)
    • Vars
      • K(b);S_FLIGHT::QAB(E),XR(c)
      • K(b);N_SPINR(c),OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • K(b);N_SPINR(c),OGATEB,S_FLIGHT,XS(C)::QAB1(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).