MESON Chess Problem Database

Problem Display
PID: 230647 (8/7Q/1P2P1P1/4R3/2kp1B2/8/1K6/8 w - - 0 1)

Magini, Fabio

Best Problems, 2021

8/7Q/1P2P1P1/4R3/2kp1B2/8/1K6/8

#2

7 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Bd2?
      • 1...d3
        • 2.Qh4#
      • 1...Kd3!
    • 1.Qh1?
      • 1...Kd3
        • 2.Qf1#
      • 1...d3
        • 2.Qe4#
      • 1...Kb4!
    • 1.Qh3?
      • threat
        • 2.Qb3#
      • 1...Kb4
        • 2.Qb3#
      • 1...d3!
    • 1.Qh5?
      • 1...Kd3
        • 2.Qe2#
      • 1...d3
        • 2.Re4#
      • 1...Kb4!
    • 1.Qa7?
      • 1...Kd3
        • 2.Qa6#
      • 1...d3
        • 2.Qa4#
      • 1...Kb4!
    • 1.Qb7?
      • 1...Kd3
        • 2.Qa6#
      • 1...d3
        • 2.Qe4#
      • 1...Kb4!
    • 1.Qc7+?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kb4!
    • 1.Qe7?
      • 1...d3
        • 2.Qc5#
      • 1...Kd3!
    • 1.g7?
      • 1...d3
        • 2.Qe4#
      • 1...Kb4!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qb5#
      • 1...Kd3
        • 2.Qb5#
      • 1...Kb4
        • 2.Qb5#
        • 2.Qxd4#
      • 1...d3
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • P(b);OGATEB,SBLOCK::QAR(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB(G)
        • P(b);OGATEB::QAR2(G)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • K(a);P-FLIGHT::QAR1(G)
      • Refutation
        • P(b);
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
        • P(b);OGATEB,SBLOCK::R(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB(G)
        • P(b);SBLOCK::QAR2(G)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB(G)
        • P(b);OGATEB::QAR2(G)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);
      • Vars
        • P(b);SBLOCK::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(F);
      • Vars
        • P(b);OGATEB::QAR2(G)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • K(a);P_SPINP(b),S_FLIGHT::QAB(G)
      • P(b);SBLOCK::QAR2(G)
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).