MESON Chess Problem Database

Problem Display
PID: 163243 (q3rQ2/4R1r1/5b2/1p1n4/1NnN1k1B/3B3P/p4P2/K3R2b w - - 0 1)

Kunze, Otto

Welt im Bild, 1937

(First published on Sun Dec 19 1937)

q3rQ2/4R1r1/5b2/1p1n4/1NnN1k1B/3B3P/p4P2/K3R2b

#2

10 + 10

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rg2
      • 2.R1e4#
    • 1...Rg3
      • 2.fxg3#
    • 1...Be4
      • 2.R1xe4#
    • 1...Sc3
      • 2.Qxf6#
    • 1...Sxb4
      • 2.Qxf6#
    • 1...Sb6
      • 2.Qxf6#
    • 1...Sc7
      • 2.Qxf6#
  • Tries
    • 1.Sxd5+?
      • 1...Bxd5
        • 2.Qxf6#
      • 1...Qxd5!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sd3#
      • 1...Bxe4
        • 2.R1xe4#
      • 1...Sxb4
        • 2.Qxf6#
      • 1...Qa3
        • 2.Sxd5#
      • 1...Rg3
        • 2.fxg3#
      • 1...Sb2
        • 2.Se2#
      • 1...Se5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(h);S_CUTB(a)::R1(B)
    • R(h);OGATE::P(C),XR(h)
    • B(a);N_GUARD::R1(B),XB(a)
    • S(f);N_GUARD,N_PINS(G)::QAR2(J),XB(g)
    • S(f);N_GUARD,XS(F)::QAR2(J),XB(g)
    • S(f);N_GUARD::QAR2(J),XB(g)
  • Tries
    • Try
      • S(F);CHECK,XS(f)
      • Vars
        • B(a);XS(F)::QAR2(J),XB(g)
      • Refutation
        • Q(i);XS(F)
  • Actual
    • B(D);
    • Threat
      • S(F)
    • Vars
      • B(a);OGATE,XB(D)::R1(B),XB(a)
      • S(f);N_GUARD,XS(F)::QAR2(J),XB(g)
      • Q(i);N_GUARD::S(F),XS(f)
      • R(h);OGATE::P(C),XR(h)
      • S(c);N_PINS(G)::S(G)
      • S(c);N_PINS(G),SBLOCK::S(G)
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).