MESON Chess Problem Database

Problem Display
PID: 139193 (1N6/qb1p4/1p3pK1/3k4/1B6/1P4p1/4QP2/2r5 w - - 0 1)

Gerrard, TB

The Problemist, 1937

1N6/qb1p4/1p3pK1/3k4/1B6/1P4p1/4QP2/2r5

#2

6 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3+?
      • 1...Ke6
        • 2.Qf5#
        • 2.Qd6#
      • 1...Ke5!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Sxd7#
        • 2.f4#
      • 1...Rxc4!
  • Keys
    • 1.Kf5!
      • threat
        • 2.Qd3#
        • 2.Qd2#
        • 2.Qe4#
      • 1...Kd4
        • 2.Qd2#
      • 1...Qxb8
        • 2.Qe4#
      • 1...Rc5
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qd2#
      • 1...Qa1
        • 2.Qe4#
      • 1...Qa2
        • 2.Qd3#
        • 2.Qe4#
      • 1...Qa6
        • 2.Qe4#
      • 1...Rd1
        • 2.Qxd1#
        • 2.Qc4#
        • 2.Qe4#
      • 1...Re1
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qd2#
      • 1...Rc2
        • 2.Qd3#
        • 2.Qe4#
      • 1...Rc3
        • 2.Qe4#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Ba6
        • 2.Qe4#
      • 1...b5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • R(a);XQ(A)
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • DUALS(3)
    • Vars
      • K(c);P-FLIGHT::QAR2(A)
      • Q(f);XS(F)::QAB1(A)
      • Q(f);::QAB1(A)
      • R(a);::QAB1(A)
      • R(a);N_GUARD::QAB1(A),XR(a)
      • B(g);::QAB1(A)
      • P(d);::QAB1(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).