MESON Chess Problem Database

Problem Display
PID: 249940 (1Qbrn3/p1Ppqp2/1Nk2b1R/4pP2/Kp6/3R4/5B2/8 w - - 0 1)

Wittwer, Heinrich

Deutsche Schachzeitung, 1944

1Qbrn3/p1Ppqp2/1Nk2b1R/4pP2/Kp6/3R4/5B2/8

#2

8 + 11

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.cxd8S#
    • 1...Qf8
      • 2.cxd8S#
    • 1...axb6
      • 2.Qxb6#
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sxe7#
      • 1...Kd6
        • 2.Sxb4#
      • 1...Qc5
        • 2.cxd8S#
      • 1...Qd6
        • 2.Qb5#
      • 1...Qf8
        • 2.cxd8S#
      • 1...Qe6
        • 2.Sxb4#
      • 1...Sd6
        • 2.Sxb4#
      • 1...d6
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(g);N_GUARD::PXR(j)=S
    • P(e);OGATE,XS(E)::QAR1(H),XP(e)
  • Actual
    • S(E);
    • Threat
      • S(E),XQ(g)
    • Vars
      • K(c);P-FLIGHT,S_CUTQ(g)::R(B)+S(E),XP(a)
      • Q(g);N_GUARD::PXR(j)=S
      • Q(g);N_SPINB(d),SBLOCK::QAB1(H)
      • Q(g);N_GUARD,N_SPINB(d)::S(E),XP(a)
      • S(k);N_SPINB(d),S_CUTQ(g)::S(E),XP(a)
      • P(f);N_SPINB(d),SBLOCK::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).