MESON Chess Problem Database

Problem Display
PID: 210917 (3B2K1/3Q1B2/p2P1Np1/p4Nk1/8/4Pp1n/4PR1n/8 w - - 0 1)

Muller, Hans Peter

Badische Neueste Nachrichten, 1971

3B2K1/3Q1B2/p2P1Np1/p4Nk1/8/4Pp1n/4PR1n/8

#2

10 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Se4+?
      • 1...Kg4
        • 2.Sfg3#
        • 2.Sg7#
      • 1...Kh5!
    • 1.Sg4+?
      • 1...Kh5
        • 2.Sg3#
        • 2.Sg7#
      • 1...Kxg4!
    • 1.Sh5+?
      • 1...Kg4
        • 2.Sfg3#
        • 2.Sfg7#
      • 1...Kxh5!
    • 1.Rg2+?
      • 1...Sg4
        • 2.Rxg4#
      • 1...fxg2!
  • Keys
    • 1.Qa4!
      • 1...Kxf5
        • 2.Qxa5#
      • 1...Sxf2
        • 2.Qf4#
      • 1...fxe2
        • 2.Qh4#
      • 1...gxf5
        • 2.Sg4#
      • 1...Sf1
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sg1
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(g)
    • Try
      • S(F);CHECK
      • Refutation
        • K(e);P-FLIGHT,XS(F)
    • Try
      • S(F);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(g),XS(F)
    • Try
      • R(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R1(B),XS(a)
      • Refutation
        • P(b);XR(B)
  • Actual
    • Q(G);
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_SPINP(b),XS(D)::QAR(G),XP(d)
      • S(c);N_GUARD,XR(B)::QAB1(G)
      • P(b);XP(A)::QAB1(G)
      • P(g);SBLOCK,XS(D)::B(I)+S(F)
      • S(a);N_GUARD::QAR1(G)
      • S(a);N_GUARD::QAR1(G),XS(a)
      • S(c);N_GUARD::QAB1(G)
      • S(c);N_GUARD::QAB1(G),XS(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).