MESON Chess Problem Database

Problem Display
PID: 133165 (5kBK/2p3pQ/1pN3p1/8/1N6/B3R3/3r4/q1r5 w - - 0 1)

Kruk, Henryk

Sinfonie Scacchistiche, 1986

5kBK/2p3pQ/1pN3p1/8/1N6/B3R3/3r4/q1r5

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qxg7#
    • 1...Qa2
      • 2.Qxg7#
    • 1...Qxa3
      • 2.Qxg7#
    • 1...Rc3
      • 2.Qxg7#
    • 1...Rb2
      • 2.Qxg7#
    • 1...Rd4
      • 2.Qxg7#
  • Tries
    • 1.Sc2+?
      • 1...Qxa3
        • 2.Qxg7#
      • 1...Rd6!
    • 1.Sd3+?
      • 1...Qxa3
        • 2.Qxg7#
      • 1...Rc5!
    • 1.Sd5+?
      • 1...Qxa3
        • 2.Qxg7#
      • 1...Rc5!
    • 1.Bc4?
      • threat
        • 2.Qg8#
      • 1...Rh2
        • 2.Sa2#
      • 1...Rh1!
    • 1.Bd5?
      • threat
        • 2.Qg8#
      • 1...Rh1
        • 2.Sa2#
      • 1...Rh2!
  • Keys
    • 1.Ba2!
      • threat
        • 2.Qg8#
      • 1...Qxa2
        • 2.Qxg7#
      • 1...Rh1
        • 2.Sd3#
      • 1...Rh2
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_GUARD::QAB1(E),XP(g)
    • Q(a);N_GUARD,XB(A)::QAB1(E),XP(g)
    • R(b);S_CUTQ(a)::QAB1(E),XP(g)
    • R(c);S_CUTQ(a)::QAB1(E),XP(g)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • Q(a);XB(A)::QAB1(E),XP(g)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • S(C);CHECK
      • Vars
        • Q(a);XB(A)::QAB1(E),XP(g)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • S(C);CHECK
      • Vars
        • Q(a);XB(A)::QAB1(E),XP(g)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • B(F);
      • Threat
        • QAR1(E)
      • Vars
        • R(c);N_GUARD,P_PINQ(E)::B(A)+S(C)
      • Refutation
        • R(b);P_PINQ(E)
    • Try
      • B(F);
      • Threat
        • QAR1(E)
      • Vars
        • R(b);N_GUARD,P_PINQ(E)::B(A)+S(C)
      • Refutation
        • R(c);P_PINQ(E)
  • Actual
    • B(F);
    • Threat
      • QAR1(E)
    • Vars
      • Q(a);N_GUARD,XB(F)::QAB1(E),XP(g)
      • R(b);N_GUARD,P_PINQ(E)::B(A)+S(C)
      • R(c);N_GUARD,P_PINQ(E)::B(A)+S(C)
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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).