MESON Chess Problem Database

Problem Display
PID: 242636 (2q5/2nPR3/B1QP2b1/bN4B1/8/3kPp1p/1p3R2/4n1NK w - - 0 1)

Gockel, Hubert

Schach, 1982

2q5/2nPR3/B1QP2b1/bN4B1/8/3kPp1p/1p3R2/4n1NK

#2

11 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd7
      • 2.Sxc7#
    • 1...Qd8
      • 2.Sxc7#
    • 1...Qe8
      • 2.Sxc7#
    • 1...Qf8
      • 2.Sxc7#
    • 1...Qh8
      • 2.Sxc7#
    • 1...Bc3
      • 2.Qxc3#
    • 1...Bb6
      • 2.Qc3#
    • 1...Be4
      • 2.Qxe4#
    • 1...Bh5
      • 2.Qe4#
    • 1...Bf7
      • 2.Qe4#
    • 1...Be8
      • 2.Qe4#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sg2
      • 2.Qc2#
    • 1...Sxb5
      • 2.Bxb5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sxa6
      • 2.Qd5#
    • 1...Sa8
      • 2.Qd5#
    • 1...Se8
      • 2.Qd5#
  • Tries
    • 1.Sxh3?
      • threat
        • 2.Sf4#
      • 1...Qf8
        • 2.Sxc7#
      • 1...Qh8
        • 2.Sxc7#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sg2
        • 2.Qc2#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Se6!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Se5#
      • 1...Sxf3
        • 2.Qc2#
      • 1...Qh8
        • 2.Sxc7#
      • 1...Bc3
        • 2.Qxc3#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 14
  • Sets
    • Q(i);N_GUARD,XP(J)::B(G)+S(E),XS(h)
    • Q(i);N_GUARD::B(G)+S(E),XS(h)
    • B(f);N_GUARD::QAR1(H),XB(f)
    • B(f);N_GUARD::QAR1(H)
    • B(g);N_GUARD::QAB1(H),XB(g)
    • B(g);N_GUARD::QAB1(H)
    • S(a);N_GUARD::QAB1(H),XS(a)
    • S(a);N_GUARD::QAB1(H)
    • S(h);OGATE,P_SPINS(h),XS(E)::B(G),XS(h)
    • S(h);N_GUARD::QAR2(H),XS(h)
    • S(h);N_GUARD,XB(G)::QAR2(H)
    • S(h);N_GUARD::QAR2(H)
  • Tries
    • Try
      • S(A);XP(e)
      • Threat
        • S(A)
      • Vars
        • Q(i);N_GUARD::B(G)+S(E),XS(h)
        • Q(i);N_GUARD,P_PINS(A)::B(G)+S(E),XS(h)
        • B(g);N_GUARD::QAB1(H),XB(g)
        • S(a);N_GUARD::QAB1(H)
        • S(h);N_GUARD::QAR2(H),XS(h)
      • Refutation
        • S(h);
  • Actual
    • S(A);XP(d)
    • Threat
      • S(A)
    • Vars
      • S(a);N_GUARD,XS(A)::QAB1(H)
      • Q(i);N_GUARD::B(G)+S(E),XS(h)
      • B(f);N_GUARD::QAR1(H),XB(f)
      • B(g);N_GUARD,P_PINS(A)::QAB1(H),XB(g)
      • S(h);N_GUARD::QAR2(H),XS(h)
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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).