MESON Chess Problem Database

Problem Display
PID: 150471 (1b5B/1r1NnN1K/7p/QP1k1P2/2p5/3P4/6n1/6q1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Source?, 0000

1b5B/1r1NnN1K/7p/QP1k1P2/2p5/3P4/6n1/6q1

#2

8 + 8

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qa2#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Qxc4#
      • 1...cxd3
        • 2.Sf6#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Qc1
        • 2.Qc5#
      • 1...Rc7
        • 2.Qd6#
      • 1...Se3
        • 2.Qc5#
      • 1...c3
        • 2.Sf6#
        • 2.Qb3#
        • 2.Qc4#
        • 2.Qe4#
      • 1...Qd4!
    • 1.b6+?
      • 1...Qc5
        • 2.Qxc5#
      • 1...Kc6!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qxc4#
      • 1...cxd3
        • 2.Sf6#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qc5
        • 2.Sf6#
      • 1...Qc1
        • 2.Qd4#
      • 1...Rc7
        • 2.Qe5#
      • 1...Se3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB::QAB(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(c)
      • Vars
        • P(c);XP(A)::S(E)
        • Q(a);N_GUARD::QAR1(B),XQ(a)
        • Q(a);N_GUARD::QAR1(B)
        • R(f);S_CUTB(h)::QAR1(B)
        • S(b);S_CUTQ(a)::QAR1(B)
      • Refutation
        • Q(a);
    • Try
      • P(C);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(B),XQ(a)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XP(c)
    • Vars
      • P(c);XP(A)::S(E)
      • Q(a);N_GUARD::QAR1(B),XQ(a)
      • Q(a);SBLOCK::S(E)
      • Q(a);N_GUARD::QAR1(B)
      • R(f);S_CUTB(h)::QAR1(B)
      • S(b);S_CUTQ(a)::QAR1(B)
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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).