MESON Chess Problem Database

Problem Display
PID: 249607 (4N1n1/5p2/2P1B3/4k3/4p3/2P3P1/3K4/2R4Q w - - 0 1)

Eisele, Hans

Deutsche Schachzeitung, 1891

4N1n1/5p2/2P1B3/4k3/4p3/2P3P1/3K4/2R4Q

#2

8 + 4

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Qxe4#
    • 1...fxe6
      • 2.Qh5#
  • Tries
    • 1.Qh5+?
      • 1...f5
        • 2.Qxf5#
      • 1...Kxe6!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qf5#
      • 1...e3+
        • 2.Qxe3#
      • 1...Kxe6
        • 2.Qxe4#
      • 1...exf3
        • 2.Re1#
      • 1...fxe6
        • 2.Qh5#
      • 1...Sh6
        • 2.Qf6#
      • 1...Se7
        • 2.Qf6#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,XB(G)::QAR2(B),XP(a)
    • P(c);N_GUARD,SBLOCK,XB(G)::QAR(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAR1(B),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XB(G)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • P(a);CHECK,OGATEB::QAR2(B),XP(a)
      • K(b);P-FLIGHT,XB(G)::QAR2(B),XP(a)
      • P(a);OGATEB,XQ(B)::R(A)
      • P(c);N_GUARD,SBLOCK,XB(G)::QAR(B)
      • S(d);N_GUARD::QAB1(B)
      • P(c);::QAR1(B),XP(c)
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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).