MESON Chess Problem Database

Problem Display
PID: 222553 (1Q2b2K/8/3PkNp1/n4p2/5P2/1p6/8/B7 w - - 0 1)

Somma, Francesco

Funkschach, 1926

1Q2b2K/8/3PkNp1/n4p2/5P2/1p6/8/B7

#2

6 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Qxe8#
  • Tries
    • 1.Qc7?
      • threat
        • 2.Qe7#
      • 1...Bd7
        • 2.Qxd7#
      • 1...Sc6!
    • 1.Qc8+?
      • 1...Kf7
        • 2.Qxe8#
      • 1...Bd7
        • 2.Qxd7#
      • 1...Kxd6!
    • 1.Qd8?
      • threat
        • 2.Qe7#
      • 1...Kf7
        • 2.Qe7#
        • 2.Qxe8#
      • 1...Sc6!
  • Keys
    • 1.Be5!
      • threat
        • 2.Qxe8#
      • 1...Kf7
        • 2.Qxe8#
      • 1...Ba4
        • 2.Qg8#
      • 1...Bb5
        • 2.Qg8#
      • 1...Bc6
        • 2.Qg8#
      • 1...Bd7
        • 2.Qg8#
      • 1...Bf7
        • 2.Qc8#
      • 1...Sc6
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::QAB1(E),XB(f)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • B(f);N_GUARD::QAB1(E),XB(f)
      • Refutation
        • S(b);
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(E),XB(f)
        • B(f);N_GUARD,P_SPINB(f)::QAB1(E),XB(f)
      • Refutation
        • K(d);P-FLIGHT,XP(C)
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Refutation
        • S(b);
  • Actual
    • B(A);
    • Threat
      • QAR2(E),XB(f)
    • Vars
      • K(d);S_FLIGHT::QAB1(E),XB(f)
      • B(f);OGATE::QAB(E)
      • B(f);N_GUARD,SBLOCK::QAB(E)
      • S(b);N_GUARD::QAB(E),XP(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).