MESON Chess Problem Database

Problem Display
PID: 190002 (k2K4/q1Pp4/Rn1P4/1Qb5/8/8/8/8 w - - 0 1)

Palkoska, Emil

Munchner Neueste Nachrichten, 1913

k2K4/q1Pp4/Rn1P4/1Qb5/8/8/8/8

#2

5 + 5

3713 Snap 2019
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kb7
      • 2.c8Q#
    • 1...Qxa6
      • 2.Qxa6#
    • 1...Sa4
      • 2.Qb8#
      • 2.c8Q#
      • 2.c8R#
    • 1...Sc4
      • 2.Qb8#
      • 2.c8Q#
      • 2.c8R#
    • 1...Sd5
      • 2.Qb8#
      • 2.c8Q#
      • 2.c8R#
    • 1...Sc8
      • 2.Qb8#
  • Tries
    • 1.Qxb6?
      • threat
        • 2.Rxa7#
        • 2.Qb8#
        • 2.c8Q#
        • 2.c8R#
      • 1...Qxa6
        • 2.Qb8#
      • 1...Bxd6
        • 2.Rxa7#
        • 2.Qxa7#
        • 2.Qb8#
      • 1...Bg1
        • 2.Rxa7#
        • 2.Qb8#
        • 2.c8Q#
        • 2.c8R#
      • 1...Bf2
        • 2.Rxa7#
        • 2.Qb8#
        • 2.c8Q#
        • 2.c8R#
      • 1...Ba3
        • 2.Rxa7#
        • 2.Qxa7#
        • 2.Qb8#
        • 2.c8Q#
        • 2.c8R#
      • 1...Be3
        • 2.Rxa7#
        • 2.Qb8#
        • 2.c8Q#
        • 2.c8R#
      • 1...Bb4
        • 2.Rxa7#
        • 2.Qxa7#
        • 2.Qb8#
        • 2.c8Q#
        • 2.c8R#
      • 1...Bd4
        • 2.Rxa7#
        • 2.Qb8#
        • 2.c8Q#
        • 2.c8R#
      • 1...Bxb6!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Rxa7#
      • 1...Kb7
        • 2.Rxa7#
      • 1...Qxa6
        • 2.Qxa6#
      • 1...Sxa4
        • 2.c8Q#
      • 1...Sc4
        • 2.c8Q#
      • 1...Sd5
        • 2.c8Q#
      • 1...Sc8
        • 2.Qe4#

This anticipates 108954(1980)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINQ(c),P_SPINS(b),S_FLIGHT::P=Q
    • Q(c);N_SPINQ(c),OGATE,XR(B)::QAR2(A),XQ(c)
    • S(b);OGATE::QAR1(A)
  • Tries
    • Try
      • Q(A);XS(b)
      • Threat
        • DUALS(4)
      • Vars
        • Q(c);N_SPINQ(c),XR(B)::QAR1(A)
      • Refutation
        • B(a);P_PINP(D),XQ(A)
  • Actual
    • Q(A);
    • Threat
      • R1(B),XQ(c)
    • Vars
      • K(e);N_SPINQ(c),S_FLIGHT::R1(B),XQ(c)
      • Q(c);OGATE,XR(B)::QAR2(A),XQ(c)
      • S(b);N_GUARD,XQ(A)::P=Q
      • S(b);N_GUARD::P=Q
      • S(b);N_GUARD::QAB(A)
HTML5 logo

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).