MESON Chess Problem Database

Problem Display
PID: 23152 (8/8/1pN5/6Q1/k3K3/2R5/8/2n5 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/8/1pN5/6Q1/k3K3/2R5/8/2n5

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qxc1?
      • 1...b5
        • 2.Ra3#
        • 2.Qa3#
        • 2.Qa1#
        • 2.Qd1#
        • 2.Qc2#
      • 1...Kb5!
    • 1.Qc5?
      • threat
        • 2.Ra3#
        • 2.Qb4#
        • 2.Qc4#
      • 1...Sa2
        • 2.Ra3#
      • 1...Sb3
        • 2.Rc4#
        • 2.Qb4#
      • 1...Sd3
        • 2.Ra3#
      • 1...b5
        • 2.Ra3#
        • 2.Qa3#
        • 2.Qb4#
        • 2.Qa7#
      • 1...bxc5!
    • 1.Qd5?
      • threat
        • 2.Qc4#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sa2
        • 2.Qb3#
      • 1...Sd3
        • 2.Qb3#
      • 1...b5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qc4#
      • 1...Kb5
        • 2.Qc4#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sa2
        • 2.Qb3#
      • 1...Sd3
        • 2.Qb3#
      • 1...b5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);::R1(A)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • P(c);
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • S(a);N_GUARD::QAB1(C)
      • P(c);SBLOCK::QAR(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).