MESON Chess Problem Database

Problem Display
PID: 198752 (8/8/1p1p4/1P1P1K2/nN1kP3/3P4/1n3P2/2Q5 w - - 0 1)

Padulli, Giuseppe

Il Secolo, 1921

8/8/1p1p4/1P1P1K2/nN1kP3/3P4/1n3P2/2Q5

#2

8 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qc4#
    • 1...Sxd3
      • 2.Sc6#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sc3
      • 2.Qe3#
    • 1...Sc5
      • 2.Qxb2#
  • Tries
    • 1.Kf4?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc3
        • 2.Qe3#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sc5
        • 2.Qxb2#
      • 1...Sxd3+!
    • 1.Kf6?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc3
        • 2.Qe3#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sc5
        • 2.Qxb2#
      • 1...Sxd3!
    • 1.Qc2?
      • threat
        • 2.Sc6#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc3!
    • 1.Qc6?
      • 1...Sxd3
        • 2.Sc2#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sc3
        • 2.Qxb6#
      • 1...Sc5!
    • 1.Qc8?
      • 1...Sxd3
        • 2.Sc2#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc5
        • 2.Qh8#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sc3!
  • Keys
    • 1.Qc7!
      • 1...Sxd3
        • 2.Sc2#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc5
        • 2.Qg7#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sc3
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR1(A)
    • S(a);SBLOCK,XP(C)::S(D)
    • S(a);N_GUARD::QAR1(A),XS(a)
    • S(b);SBLOCK::QAB1(A)
    • S(b);N_GUARD,SBLOCK::QAB(A),XS(a)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(b);SBLOCK::QAB1(A)
        • S(a);N_GUARD::QAR1(A)
        • S(b);N_GUARD,SBLOCK::QAB(A),XS(a)
      • Refutation
        • S(a);CHECK,XP(C)
    • Try
      • K(H);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(b);SBLOCK::QAB1(A)
        • S(a);N_GUARD::QAR1(A)
        • S(b);N_GUARD,SBLOCK::QAB(A),XS(a)
      • Refutation
        • S(a);XP(C)
    • Try
      • Q(A);
      • Threat
        • S(D)
      • Vars
        • S(a);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • S(b);
    • Try
      • Q(A);
      • Vars
        • S(a);SBLOCK,XP(C)::S(D)
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(a);N_GUARD::QAR1(A)
        • S(b);N_GUARD,SBLOCK::QAB(A),XP(d)
      • Refutation
        • S(b);
    • Try
      • Q(A);
      • Vars
        • S(a);SBLOCK,XP(C)::S(D)
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(b);SBLOCK::QAB(A)
        • S(a);N_GUARD::QAR1(A)
      • Refutation
        • S(b);
  • Actual
    • Q(A);
    • Vars
      • S(a);SBLOCK,XP(C)::S(D)
      • S(a);N_GUARD::QAR1(A),XS(a)
      • S(b);SBLOCK::QAB(A)
      • S(a);N_GUARD::QAR1(A)
      • S(b);N_GUARD,SBLOCK::QAB(A),XP(d)
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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).