MESON Chess Problem Database

Problem Display
PID: 156970 (1b2N3/1pp3B1/8/QPk3p1/8/K2pN3/B7/5nq1 w - - 0 1)

Baumann, Klaus

Troll, 2015

1b2N3/1pp3B1/8/QPk3p1/8/K2pN3/B7/5nq1

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...b6
      • 2.Qb4#
    • 1...c6
      • 2.b6#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Qb4#
      • 1...Qd4
        • 2.Bf8#
      • 1...Qg4!
    • 1.Sf5?
      • threat
        • 2.Bf8#
      • 1...Qh2
        • 2.Bd4#
      • 1...Qd4
        • 2.Bxd4#
      • 1...Qg3
        • 2.Bd4#
      • 1...c6
        • 2.b6#
      • 1...Qe3!
    • 1.Qxc7+?
      • 1...Kxb5
        • 2.Bc4#
      • 1...Bxc7!
  • Keys
    • 1.Bd5!
      • threat
        • 2.b6#
      • 1...b6
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • P(f);SBLOCK::QAB1(D)
    • P(g);SBLOCK::QAR(D)+P(E)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(D)
      • Vars
        • Q(b);SBLOCK::B(F)
      • Refutation
        • Q(b);
    • Try
      • S(C);
      • Threat
        • B(F)
      • Vars
        • Q(b);N_GUARD::B(F)
        • Q(b);N_GUARD::B(F),XQ(b)
        • P(g);SBLOCK::QAR(D)+P(E)
      • Refutation
        • Q(b);
    • Try
      • Q(D);CHECK,XP(g)
      • Vars
        • K(d);P-FLIGHT,XP(E)::B(A)
      • Refutation
        • B(h);XQ(D)
  • Actual
    • B(A);
    • Threat
      • QAR(D)+P(E)
    • Vars
      • P(f);SBLOCK::QAB1(D)
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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).