MESON Chess Problem Database

Problem Display
PID: 8195 (8/2p5/8/K1kpNN2/1pp5/b7/3P1P2/1Q6 w - - 0 1)

Richards, JN

The Problemist, 1995

8/2p5/8/K1kpNN2/1pp5/b7/3P1P2/1Q6

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qxb4#
    • 1...c3
      • 2.d4#
    • 1...c6
      • 2.Sd7#
  • Tries
    • 1.Qc2?
      • threat
        • 2.d4#
      • 1...d4
        • 2.Qxc4#
      • 1...Bb2!
    • 1.Qa1?
      • threat
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...c3
        • 2.d4#
      • 1...Bb2!
    • 1.Qb2?
      • threat
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...c3
        • 2.d4#
      • 1...Bxb2!
  • Keys
    • 1.Qb3!
      • 1...cxb3
        • 2.d4#
      • 1...d4
        • 2.Qxc4#
      • 1...Bb2
        • 2.Qxb4#
      • 1...Bc1
        • 2.Qxb4#
      • 1...c3
        • 2.d4#
      • 1...c6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAB1(A),XP(b)
    • P(c);N_GUARD::P(B)
    • P(f);SBLOCK::S(E)
  • Tries
    • Try
      • Q(A);P_PINP(c)
      • Threat
        • P(B)
      • Vars
        • P(e);N_GUARD::QAR1(A),XP(c)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(e);::QAB1(A),XP(e)
        • P(c);N_GUARD::P(B)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(e);::QAB1(A),XP(e)
        • P(c);N_GUARD::P(B)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • P(c);N_GUARD,XQ(A)::P(B)
      • P(e);N_GUARD::QAR1(A),XP(c)
      • B(a);N_GUARD::QAB1(A),XP(b)
      • P(c);N_GUARD::P(B)
      • P(f);SBLOCK::S(E)
HTML5 logo

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).