MESON Chess Problem Database

Problem Display
PID: 190206 (8/4pp2/Q6B/3Nkp2/8/7p/5P1q/1K1R4 w - - 0 1)

Leopold, Dr Rudolf L

Magyar Sakkvilag, 1913

8/4pp2/Q6B/3Nkp2/8/7p/5P1q/1K1R4

#2

6 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe2#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Rd5#
      • 1...Qg1
        • 2.f4#
      • 1...Qh1
        • 2.f4#
      • 1...Qg2
        • 2.f4#
      • 1...e6!
    • 1.Bf4+?
      • 1...Ke4
        • 2.Qe2#
        • 2.Qd3#
      • 1...Qxf4!
    • 1.Bg7+?
      • 1...Ke4
        • 2.Qe2#
        • 2.Qd3#
      • 1...f6!
    • 1.f4+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Qxf4!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Rd5#
      • 1...exf6
        • 2.Qe2#
      • 1...e6
        • 2.Qa1#
      • 1...Qg1
        • 2.f4#
      • 1...Qh1
        • 2.f4#
      • 1...Qg2
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT::QAR2(E)
  • Tries
    • Try
      • S(D);
      • Threat
        • R1(B)
      • Vars
        • Q(a);N_GUARD,P_PINR(B)::P(C)
        • Q(a);N_GUARD::P(C)
      • Refutation
        • P(e);
    • Try
      • B(F);CHECK
      • Refutation
        • Q(a);XB(F)
    • Try
      • B(F);CHECK
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • P(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(E)
      • Refutation
        • Q(a);XP(C)
  • Actual
    • S(D);
    • Threat
      • R1(B)
    • Vars
      • P(e);SBLOCK,XS(D)::QAR(E)
      • P(e);SBLOCK::QAB(E)
      • Q(a);N_GUARD,P_PINR(B)::P(C)
      • Q(a);N_GUARD::P(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).