MESON Chess Problem Database

Problem Display
PID: 194462 (K2RB3/3N3p/Q2p3P/3kB3/1P6/8/6P1/8 w - - 0 1)

Mikkelsen, Paul Helweg

Skakbladet, 1907

K2RB3/3N3p/Q2p3P/3kB3/1P6/8/6P1/8

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...dxe5
      • 2.Sc5#
      • 2.Sf6#
  • Tries
    • 1.Bg6?
      • 1...Ke6
        • 2.Qxd6#
      • 1...dxe5
        • 2.Sc5#
        • 2.Sf6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...hxg6!
    • 1.Qe2?
      • 1...Kc6
        • 2.Qc4#
      • 1...dxe5
        • 2.Sc5#
        • 2.Sf8#
      • 1...Ke6!
    • 1.Qd3+?
      • 1...Kc6
        • 2.Rc8#
        • 2.Qc4#
      • 1...Ke6!
    • 1.Qa2+?
      • 1...Kc6
        • 2.Qc4#
      • 1...Ke4!
    • 1.g4?
      • 1...Ke6
        • 2.Qxd6#
      • 1...dxe5
        • 2.Sc5#
        • 2.Sf6#
      • 1...Ke4!
  • Keys
    • 1.Qf1!
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qc4#
      • 1...Ke6
        • 2.Qf7#
      • 1...dxe5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(I);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
      • Refutation
        • P(c);XB(I)
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(A);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::QAR2(D)
      • P(b);SBLOCK,XB(C)::R(H)+S(F)
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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).