MESON Chess Problem Database

Problem Display
PID: 233256 (2Q5/6p1/K2N3b/p2k2nB/2p1R1P1/2B1p3/2qnN3/8 w - - 0 1)

Muller, Dieter

Freie Presse, 1973

2Q5/6p1/K2N3b/p2k2nB/2p1R1P1/2B1p3/2qnN3/8

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qc7?
      • threat
        • 2.Sf4#
        • 2.Re5#
      • 1...Qxc3
        • 2.Sxc3#
        • 2.Sf4#
      • 1...Sdxe4
        • 2.Sf4#
      • 1...Sgxe4
        • 2.Bf7#
      • 1...Sgf3
        • 2.Bf7#
      • 1...Sdf3
        • 2.Sf4#
      • 1...Sh3
        • 2.Bf7#
        • 2.Re5#
      • 1...Se6
        • 2.Re5#
      • 1...Sf7
        • 2.Bxf7#
      • 1...Sh7
        • 2.Bf7#
        • 2.Re5#
      • 1...Qxe4!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Re5#
      • 1...Kxe4
        • 2.Qf5#
      • 1...Qxe4
        • 2.Qd7#
      • 1...Qxc3
        • 2.Sxc3#
      • 1...Sdxe4
        • 2.Sf4#
      • 1...Sgxe4
        • 2.Bf7#
      • 1...Sdf3
        • 2.Qxc4#
      • 1...Sgf3
        • 2.Qe6#
      • 1...Sf7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XR(C)::S(A)
        • S(g);N_GUARD,XR(C)::B(E)
        • S(g);N_GUARD::B(E)
        • S(b);::S(A)
        • S(g);::R1(C)
        • S(g);N_GUARD::B(E),XS(g)
      • Refutation
        • Q(a);XR(C)
  • Actual
    • S(G);
    • Threat
      • R1(C)
    • Vars
      • K(f);S_FLIGHT,XR(C)::QAB1(H)
      • Q(a);SBLOCK,XR(C)::QAR2(H)
      • Q(a);XB(B)::S(A),XQ(a)
      • S(b);SBLOCK,XR(C)::S(A)
      • S(g);N_GUARD,SBLOCK,XR(C)::B(E)
      • S(b);N_GUARD::QAB1(H),XP(d)
      • S(g);N_GUARD::QAB1(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).