MESON Chess Problem Database

Problem Display
PID: 216129 (4b3/3kP2R/3N4/B1p1pN2/K1Q2p2/pp5B/3R4/1q2r3 w - - 0 1)

Gockel, Hubert

Probleemblad, 1980

4b3/3kP2R/3N4/B1p1pN2/K1Q2p2/pp5B/3R4/1q2r3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qb5#
    • 1...Bh5
      • 2.e8Q#
      • 2.e8B#
    • 1...Bg6
      • 2.e8Q#
      • 2.e8B#
    • 1...Bf7
      • 2.e8Q#
      • 2.e8B#
  • Tries
    • 1.Se3+?
      • 1...Kc6
        • 2.Qb5#
        • 2.Qd5#
        • 2.Qa6#
      • 1...Qf5!
    • 1.Sg3+?
      • 1...Kc6
        • 2.Qb5#
        • 2.Qd5#
        • 2.Qa6#
      • 1...Qf5!
    • 1.Sh4+?
      • 1...Kc6
        • 2.Qb5#
        • 2.Qd5#
        • 2.Qa6#
      • 1...Qf5!
    • 1.Sh6+?
      • 1...Kc6
        • 2.Qb5#
        • 2.Qd5#
        • 2.Qa6#
      • 1...Qf5!
    • 1.Qe6+?
      • 1...Kc6
        • 2.Qc8#
      • 1...Kxe6+!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qc8#
      • 1...Ke6+
        • 2.Sxe8#
      • 1...Qe4+
        • 2.Sxe4#
      • 1...Re4+
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(h);P_SPINP(f),S_FLIGHT::QAB1(D)
    • B(i);OGATE::P=Q
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • S(F);CHECK
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • S(F);CHECK
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • S(F);CHECK
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • Q(D);CHECK
      • Vars
        • K(h);OGATE,S_FLIGHT::QAR2(D)
      • Refutation
        • K(h);CHECK,S_FLIGHT,XQ(D)
  • Actual
    • Q(D);
    • Threat
      • QAB1(D)
    • Vars
      • K(h);CHECK,S_FLIGHT::QAR(D)+S(G),XB(i)
      • Q(a);CHECK,N_GUARD::R(A)+S(G),XQ(a)
      • R(b);CHECK,S_CUTQ(a)::B(B)+S(F)
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).