MESON Chess Problem Database

Problem Display
PID: 224231 (8/2p1p3/Q7/3k1p2/1R4N1/4B3/2P4b/7K w - - 0 1)

Decker, Adolfph L

Deutsche Schachzeitung, 1888

8/2p1p3/Q7/3k1p2/1R4N1/4B3/2P4b/7K

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qc4#
    • 1...e5
      • 2.Sf6#
  • Tries
    • 1.Rb5+?
      • 1...Kc4
        • 2.Qc6#
      • 1...Ke4
        • 2.Qc6#
      • 1...c5!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Qc6#
      • 1...fxe4
        • 2.c4#
      • 1...c6
        • 2.Qd3#
      • 1...Be5
        • 2.Rxe5#
      • 1...Bd6
        • 2.Qc4#
      • 1...e5
        • 2.Sf6#
      • 1...e6
        • 2.Sf6#
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAB1(F)
    • P(e);N_GUARD,SBLOCK::S(E)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(F)
        • K(b);S_FLIGHT::QAB(F)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • R(D);
    • Threat
      • QAB1(F)
    • Vars
      • K(b);S_FLIGHT,XR(D)::QAB(F)
      • P(c);SBLOCK,XR(D)::P(B)
      • P(d);SBLOCK::QAR2(F)
      • B(a);N_GUARD::R1(D),XB(a)
      • B(a);SBLOCK::QAB1(F)
      • P(e);N_GUARD::S(E)
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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).