MESON Chess Problem Database

Problem Display
PID: 21297 (8/1p6/1Kp5/8/kpQ5/1p6/n1N5/8 w - - 0 1)

Warton, Joseph John

Warton, Thomas Joseph

Falkirk Herald, 1918

8/1p6/1Kp5/8/kpQ5/1p6/n1N5/8

#2

3 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qxb4#
    • 1...Sc3
      • 2.Qxb4#
    • 1...bxc2
      • 2.Qxa2#
    • 1...b2
      • 2.Qxa2#
    • 1...c5
      • 2.Qb5#
  • Tries
    • 1.Sa1?
      • threat
        • 2.Qxb3#
      • 1...Ka3
        • 2.Qxb3#
      • 1...b2
        • 2.Qxa2#
        • 2.Qb3#
      • 1...Sc1!
    • 1.Sd4?
      • threat
        • 2.Qxb3#
      • 1...Ka3
        • 2.Qxb3#
      • 1...b2
        • 2.Qxa2#
        • 2.Qb3#
      • 1...Sc1!
    • 1.Qd5?
      • threat
        • 2.Qa5#
      • 1...bxc2
        • 2.Qxa2#
      • 1...b2
        • 2.Qxa2#
      • 1...c5
        • 2.Qd7#
      • 1...cxd5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qa8#
      • 1...bxc2
        • 2.Qxa2#
      • 1...b2
        • 2.Qxa2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::QAR1(B),XP(d)
    • P(b);OGATE,XS(A)::QAR2(B),XS(a)
    • P(b);OGATE::QAR2(B),XS(a)
    • P(e);N_GUARD::QAB1(B)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(B),XP(b)
      • Vars
        • K(c);N_SPINP(d),P-FLIGHT::QAR1(B),XP(b)
      • Refutation
        • S(a);
    • Try
      • S(A);
      • Threat
        • QAB1(B),XP(b)
      • Vars
        • K(c);N_SPINP(d),P-FLIGHT::QAR1(B),XP(b)
      • Refutation
        • S(a);
    • Try
      • Q(B);N_PINP(d)
      • Threat
        • QAR1(B)
      • Vars
        • P(b);OGATE,XS(A)::QAR2(B),XS(a)
        • P(b);OGATE::QAR2(B),XS(a)
        • P(e);OGATEB::QAB(B)
      • Refutation
        • P(e);XQ(B)
  • Actual
    • Q(B);N_PINP(d)
    • Threat
      • QAR(B)
    • Vars
      • P(b);OGATE,XS(A)::QAR2(B),XS(a)
      • P(b);OGATE::QAR2(B),XS(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).