MESON Chess Problem Database

Problem Display
PID: 276588 (1qQ5/5b2/1P5K/1NP3R1/2kB4/P1N1p1p1/2P5/8 w - - 0 1)

Haring, Jacobus

To Mat, 1954

1qQ5/5b2/1P5K/1NP3R1/2kB4/P1N1p1p1/2P5/8

#2

10 + 5

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6+
      • 2.cxd6#
    • 1...Qxb6+
      • 2.cxb6#
    • 1...Bh5
      • 2.Qe6#
    • 1...Be6
      • 2.Qxe6#
    • 1...Bg6
      • 2.Qe6#
    • 1...Be8
      • 2.Qe6#
  • Tries
    • 1.Sd6+?
      • 1...Kxd4
        • 2.Se2#
        • 2.Scb5#
      • 1...Qxd6+!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qe2#
      • 1...Qd6+
        • 2.Sxd6#
      • 1...Qxb6+
        • 2.Bf6#
      • 1...Qf8+
        • 2.Bg7#
      • 1...Qh8+
        • 2.Bxh8#
      • 1...Bh5
        • 2.Qe6#
      • 1...Bg6
        • 2.Qe6#
      • 1...e2
        • 2.Qxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(e);CHECK,OGATE::QAR(J)+P(F),XQ(e)
    • Q(e);CHECK,OGATE,XP(H)::QAR(J)+P(F),XQ(e)
    • B(d);N_GUARD::QAB(J)
    • B(d);N_GUARD::QAB(J),XB(d)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • Q(e);CHECK,XS(E)
  • Actual
    • Q(J);
    • Threat
      • QAB(J)
    • Vars
      • Q(e);CHECK,N_GUARD::S(E),XQ(e)
      • Q(e);CHECK,N_GUARD,XP(H)::QAR(J)+B(D)
      • Q(e);CHECK,N_GUARD::QAR(J)+B(D)
      • Q(e);CHECK,N_GUARD::QAR(J)+B(D),XQ(e)
      • B(d);N_GUARD::QAB(J)
      • P(a);::QAB(J),XP(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).