MESON Chess Problem Database

Problem Display
PID: 203289 (3R3B/1b3B1p/3r1P2/2pn4/P1Nk4/8/1P2P3/4QK2 w - - 0 1)

Lux, Josef

1st Prize, Pfalzische Ty., 1924

3R3B/1b3B1p/3r1P2/2pn4/P1Nk4/8/1P2P3/4QK2

#2

10 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qc3#
    • 1...Ra6
      • 2.Qh4#
    • 1...Rb6
      • 2.Qh4#
    • 1...Rc6
      • 2.Qh4#
  • Tries
    • 1.Qd2+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Ke4!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Sxc3!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qd3#
      • 1...Rxf6+
        • 2.Qf4#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Kxc4
        • 2.Qc3#
      • 1...Ke4
        • 2.Qe5#
      • 1...Sb4
        • 2.Qe5#
        • 2.Qe3#
      • 1...Sf4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • K(a);P-FLIGHT,P_SPINS(c),XS(F)::QAR1(A)
    • R(d);P_SPINS(c)::QAR(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINS(c),XS(F)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • S(c);P_SPINR(d),XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • R(d);CHECK,P_SPINR(d),P_SPINS(c),XP(G)::QAR2(A)
      • S(c);CHECK,N_GUARD,P_SPINR(d)::QAB1(A),XS(c)
      • K(a);P-FLIGHT,P_SPINS(c),XS(F)::QAR1(A)
      • K(a);P-FLIGHT::QAR1(A)
      • S(c);N_GUARD,P_SPINR(d)::QAB1(A)
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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).