MESON Chess Problem Database

Problem Display
PID: 151470 (8/3Q4/3p2R1/4pp2/1P2k3/2K2p2/5P2/8 w - - 0 1)

Beckers, Franz

Tagliche Rundschau, 1908

8/3Q4/3p2R1/4pp2/1P2k3/2K2p2/5P2/8

#2

5 + 5

119 Tidskrift for Schack 1909
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qb7#
  • Tries
    • 1.Rxd6?
      • 1...f4
        • 2.Qh7#
      • 1...Kf4!
    • 1.Rf6?
      • 1...Kf4
        • 2.Qxf5#
      • 1...Kd5
        • 2.Qb7#
      • 1...d5
        • 2.Qxf5#
      • 1...f4!
    • 1.Qxd6?
      • 1...f4
        • 2.Qd3#
      • 1...Kf4!
    • 1.Qa7?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kd5
        • 2.Qb7#
        • 2.Qa8#
      • 1...d5
        • 2.Qe3#
      • 1...f4!
  • Keys
    • 1.Qh7!
      • 1...Kf4
        • 2.Qh4#
      • 1...Kd5
        • 2.Qb7#
      • 1...f4
        • 2.Rxd6#
      • 1...d5
        • 2.Rg4#

Anticipated by 69263(1897)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(e),S_FLIGHT::QAB(E)
  • Tries
    • Try
      • R(D);XP(e)
      • Vars
        • P(d);OGATEB,SBLOCK::QAB(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(D);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(d)::QAR1(E),XP(d)
        • K(b);P_SPINP(e),S_FLIGHT::QAB(E)
        • P(e);SBLOCK::QAB1(E),XP(d)
      • Refutation
        • P(d);
    • Try
      • Q(E);XP(e)
      • Vars
        • P(d);SBLOCK::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(E);
      • Vars
        • K(b);P-FLIGHT::QAB1(E)
        • P(e);SBLOCK::QAR1(E)
      • Refutation
        • P(d);
  • Actual
    • Q(E);
    • Vars
      • K(b);P-FLIGHT::QAR2(E)
      • K(b);S_FLIGHT::QAB(E)
      • P(d);OGATEB,SBLOCK::QAB(E)+R(D),XP(e)
      • P(e);SBLOCK::R(D)
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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).