MESON Chess Problem Database

Problem Display
PID: 269955 (6b1/2n2Q2/5n2/1p6/3Bp3/2P5/2KN4/k7 w - - 0 1)

Chicco, Adriano

Falkirk Herald, 1933

(First published on Wed Feb 15 1933)

6b1/2n2Q2/5n2/1p6/3Bp3/2P5/2KN4/k7

#2

5 + 6

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Qa7#
    • 1...Se6
      • 2.Qa7#
    • 1...b4
      • 2.cxb4#
  • Tries
    • 1.Qa2+?
      • 1...Bxa2
        • 2.c4#
      • 1...Kxa2!
    • 1.Qb3?
      • threat
        • 2.Qb1#
        • 2.Qb2#
        • 2.c4#
      • 1...Bc4
        • 2.Qb1#
        • 2.Qb2#
      • 1...Sfd5
        • 2.Qb1#
        • 2.Qb2#
        • 2.Qa3#
      • 1...Scd5
        • 2.Qb1#
        • 2.Qb2#
        • 2.Qa3#
      • 1...Se6
        • 2.Qb1#
        • 2.Qb2#
        • 2.Qa3#
      • 1...Bxb3+!
  • Keys
    • 1.Kb3!
      • threat
        • 2.c4#
      • 1...Sfd5
        • 2.Qf1#
      • 1...Scd5
        • 2.Qa7#
      • 1...Se6
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(e);OGATE::QAR(E)
    • P(c);OGATE::B(D)+P(C),XP(c)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • B(f);SBLOCK,XQ(E)::B(D)+P(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Refutation
        • B(f);CHECK,XQ(E)
  • Actual
    • K(A);P_SPINQ(E),S_FLIGHT
    • Threat
      • B(D)+P(C)
    • Vars
      • S(d);N_PINQ(E)::QAR(E)
      • S(e);N_PINQ(E)::QAR(E)
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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).