MESON Chess Problem Database

Problem Display
PID: 33015 (2q5/bn1R4/N2P4/pP1k4/6Q1/2pNpPn1/2K1P3/3R4 w - - 0 1)

Palatz, Franz Ferdinand Ludwig

Good Companions (March), 1923

2q5/bn1R4/N2P4/pP1k4/6Q1/2pNpPn1/2K1P3/3R4

#2

10 + 8

3360 Simple Two-move Themes 1924
20 De Problemist 1929

SOLUTION

  • SOUND
  • Sets
    • 1...Qc7
      • 2.Sxc7#
    • 1...Qa8
      • 2.Sc7#
    • 1...Qe8
      • 2.Sc7#
    • 1...Qf8
      • 2.Sc7#
    • 1...Qg8
      • 2.Sc7#
    • 1...Qh8
      • 2.Sc7#
    • 1...Sf1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Sxe2
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sf5
      • 2.Qe4#
    • 1...Sh5
      • 2.Qe4#
    • 1...a4
      • 2.Sab4#
  • Tries
    • 1.Qe6+?
      • 1...Kd4
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sf2#
        • 2.Sdb4#
        • 2.Sf4#
        • 2.Sdc5#
        • 2.Se5#
      • 1...Kxe6!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Sdc5#
      • 1...Ke6
        • 2.Qf7#
      • 1...Sxe2
        • 2.Qe4#
      • 1...Bd4
        • 2.Qf7#
      • 1...Se4
        • 2.Qxe4#
      • 1...Qc4
        • 2.Qe5#
      • 1...Qc5
        • 2.Sdxc5#
      • 1...Qh8
        • 2.Sc7#
      • 1...Bc5
        • 2.Sdxc5#
      • 1...Sf1
        • 2.Qe4#
      • 1...Sf5
        • 2.Qe4#
      • 1...Sc5
        • 2.Sdxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(h);N_GUARD::S(H),XQ(h)
    • Q(h);N_GUARD::S(H)
    • S(c);N_GUARD::QAB1(F)
    • S(c);N_GUARD,XP(C)::QAB1(F)
    • S(c);N_GUARD::QAB1(F),XS(c)
    • P(d);N_GUARD::S(H)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • K(e);S_FLIGHT,XQ(F)
  • Actual
    • Q(F);
    • Threat
      • R(A)+S(D)
    • Vars
      • K(e);S_FLIGHT::QAB1(F)
      • S(c);N_GUARD,XP(C)::QAB1(F)
      • B(f);SBLOCK::QAB(F)
      • S(c);N_GUARD::QAB1(F),XS(c)
      • Q(h);SBLOCK::QAR1(F)
      • Q(h);::R(A)+S(D),XQ(h)
      • Q(h);N_GUARD::S(H)
      • B(f);::R(A)+S(D),XB(f)
      • S(c);N_GUARD::QAB1(F)
      • S(g);::R(A)+S(D),XS(g)
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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).