MESON Chess Problem Database

Problem Display
PID: 195231 (K7/5p2/1NpR1P2/2b1k1N1/5pP1/7Q/4b3/8 w - - 0 1)

Fritsch, Karl

Deutsche Schachzeitung, 1918

K7/5p2/1NpR1P2/2b1k1N1/5pP1/7Q/4b3/8

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Sc4#
    • 1...Bf3
      • 2.Sc4#
    • 1...Bc4
      • 2.Sxc4#
    • 1...Bxd6
      • 2.Qc3#
    • 1...f3
      • 2.Qh2#
      • 2.Qg3#
  • Tries
    • 1.Re6+?
      • 1...Kd4
        • 2.Re4#
      • 1...fxe6!
    • 1.Qc3+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Kxd6!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Sxf7#
      • 1...Kxd6
        • 2.Qxf4#
      • 1...Bxf3
        • 2.Sc4#
      • 1...Bxd6
        • 2.Qc3#
      • 1...Bc4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(D)
    • B(a);N_GUARD::S(D),XB(a)
    • B(c);N_GUARD,SBLOCK,XR(E)::QAB(A)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::R1(E)
      • Refutation
        • P(f);XR(E)
    • Try
      • Q(A);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(A),XB(c)
      • Refutation
        • K(d);S_FLIGHT,XR(E)
  • Actual
    • Q(A);
    • Threat
      • S(C),XP(f)
    • Vars
      • K(d);S_FLIGHT,XR(E)::QAB(A),XP(b)
      • B(a);N_GUARD,XQ(A)::S(D)
      • B(c);N_GUARD,SBLOCK,XR(E)::QAB(A)
      • B(a);N_GUARD::S(D),XB(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).