MESON Chess Problem Database

Problem Display
PID: 225356 (6K1/8/3pk3/1B2p3/6N1/8/8/1Q6 w - - 0 1)

Hudak, Stanislav

Praca, 2000

6K1/8/3pk3/1B2p3/6N1/8/8/1Q6

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qxe4#
  • Tries
    • 1.Kf8?
      • 1...e4
        • 2.Qxe4#
      • 1...d5
        • 2.Qg6#
      • 1...Kd5!
    • 1.Qe4?
      • 1...d5
        • 2.Qxe5#
      • 1...Ke7!
    • 1.Qg6+?
      • 1...Ke7
        • 2.Qe8#
        • 2.Qf6#
      • 1...Kd5!
    • 1.Qh7?
      • threat
        • 2.Qf7#
      • 1...d5
        • 2.Qd7#
      • 1...Kd5!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qf7#
      • 1...Kd5
        • 2.Qc4#
      • 1...Ke7
        • 2.Qf6#
      • 1...d5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::QAR2(A),XP(a)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(b);SBLOCK::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • P(b);N_GUARD::QAR1(A),XP(a)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(b);::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);S_FLIGHT::QAB1(A)
      • K(c);P-FLIGHT::QAB1(A)
      • P(b);SBLOCK::QAR1(A)
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).