MESON Chess Problem Database

Problem Display
PID: 189830 (8/1pKNp3/6p1/3k4/8/1pP2P2/6Q1/1B2r3 w - - 0 1)

Gold, Samuel

Magyar Sakkujsag, 1912

8/1pKNp3/6p1/3k4/8/1pP2P2/6Q1/1B2r3

#2

6 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...b2
      • 2.Ba2#
  • Tries
    • 1.Qd2+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke6!
    • 1.Qg4?
      • threat
        • 2.c4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rc1
        • 2.Qe4#
      • 1...b5!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qxb3#
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke6
        • 2.Qxb3#
      • 1...Rxb1
        • 2.Qe4#
      • 1...bxc2
        • 2.Ba2#
      • 1...Re4
        • 2.Qxe4#
      • 1...b2
        • 2.Ba2#
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATEB::B(A)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • P(C)
      • Vars
        • R(a);N_GUARD::QAB1(B),XR(a)
        • R(a);N_GUARD,P_PINP(C)::QAB1(B)
      • Refutation
        • P(e);
  • Actual
    • Q(B);
    • Threat
      • QAB(B),XP(b)
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • K(c);S_FLIGHT::QAB(B),XP(b)
      • R(a);N_GUARD,XB(A)::QAB1(B)
      • P(b);OGATEB,XQ(B)::B(A)
      • R(a);N_GUARD::QAB1(B),XR(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).