MESON Chess Problem Database

Problem Display
PID: 225891 (b1N2R2/1k1P4/8/1N3p2/1P3K2/5P2/8/1Q6 w - - 0 1)

Hemala, Jozef

Praca, 1997

b1N2R2/1k1P4/8/1N3p2/1P3K2/5P2/8/1Q6

#2

8 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kb8
      • 2.Scd6#
  • Tries
    • 1.Qa2?
      • 1...Kb8
        • 2.Scd6#
        • 2.Qa7#
      • 1...Kc6!
    • 1.Qc2?
      • 1...Kb8
        • 2.Scd6#
        • 2.Qc7#
      • 1...Ka6!
    • 1.Qe4+?
      • 1...Ka6
        • 2.Sc7#
      • 1...Kb8
        • 2.Sb6#
        • 2.Scd6#
        • 2.Sca7#
        • 2.Se7#
      • 1...fxe4!
    • 1.Qxf5?
      • 1...Kc6
        • 2.d8S#
      • 1...Kb8
        • 2.Scd6#
      • 1...Ka6!
    • 1.Qa1?
      • 1...Kb8
        • 2.Scd6#
        • 2.Qa7#
      • 1...Kc6!
    • 1.Qc1?
      • 1...Kb8
        • 2.Scd6#
        • 2.Qc7#
      • 1...Ka6!
    • 1.Qf1?
      • 1...Ka6
        • 2.Sbd6#
      • 1...Kb8
        • 2.Scd6#
      • 1...Kc6!
    • 1.Qg1?
      • threat
        • 2.Qb6#
      • 1...Ka6
        • 2.Qb6#
      • 1...Kb8
        • 2.Scd6#
        • 2.Qa7#
      • 1...Kc6!
    • 1.d8Q?
      • threat
        • 2.Qb6#
      • 1...Ka6
        • 2.Qb6#
      • 1...Kb8
        • 2.Scd6#
        • 2.Qc7#
      • 1...Kc6!
  • Keys
    • 1.Qd3!
      • 1...Ka6
        • 2.Sbd6#
      • 1...Kc6
        • 2.d8S#
      • 1...Kb8
        • 2.Scd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::R(H)+S(G)
  • Tries
    • Try
      • Q(A);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::S(E)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);XP(a)
      • Vars
        • K(b);S_FLIGHT::P=S
        • K(b);P-FLIGHT::R(H)+S(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB(A)+S(E)
        • K(b);P-FLIGHT::R(H)+S(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(b);S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAB(A)+S(E)
      • K(b);S_FLIGHT::P=S
      • K(b);P-FLIGHT::R(H)+S(G)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).