MESON Chess Problem Database

Problem Display
PID: 175528 (2Q5/5p2/3P1P2/KNNb2R1/2k1p3/5p2/3P1P2/8 w - - 0 1)

Zimmermann, Stepan

Source?, 1900

2Q5/5p2/3P1P2/KNNb2R1/2k1p3/5p2/3P1P2/8

#2

9 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.d3#
  • Tries
    • 1.Qh3?
      • 1...Kxc5
        • 2.Qc8#
      • 1...Bc6
        • 2.Qf1#
      • 1...Be6
        • 2.Qf1#
      • 1...Bb7
        • 2.Qf1#
      • 1...Ba8
        • 2.Qf1#
      • 1...e3!
    • 1.Qc6?
      • threat
        • 2.Qxd5#
      • 1...Be6
        • 2.Qxe4#
      • 1...Bxc6!
  • Keys
    • 1.Qg4!
      • 1...Kxc5
        • 2.Qc8#
      • 1...Bc6
        • 2.d3#
      • 1...Be6
        • 2.Qxe4#
        • 2.d3#
      • 1...Bb7
        • 2.d3#
      • 1...Ba8
        • 2.d3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::P(A)
  • Tries
    • Try
      • Q(I);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINB(d),XS(E)::QAR(I)
        • B(d);::QAB(I)
      • Refutation
        • P(c);
    • Try
      • Q(I);
      • Threat
        • QAB1(I),XB(d)
      • Vars
        • B(d);OGATE::QAR2(I),XP(c)
      • Refutation
        • B(d);XQ(I)
  • Actual
    • Q(I);P_PINP(c)
    • Vars
      • K(b);N_SPINP(c),OGATEB,P-FLIGHT,P_SPINB(d),XS(E)::QAR(I)
      • B(d);::P(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).