MESON Chess Problem Database

Problem Display
PID: 174008 (6R1/7K/3BBR2/5r1p/Q4N1k/5pp1/8/1b4n1 w - - 0 1)

Bottacchi, Antonio

L'Illustrazione Italiana, 1921

6R1/7K/3BBR2/5r1p/Q4N1k/5pp1/8/1b4n1

#2

7 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5+
      • 2.Sg6#
    • 1...Sh3
      • 2.Sg2#
  • Tries
    • 1.Sd3+?
      • 1...Rf4
        • 2.Rxf4#
        • 2.Qxf4#
      • 1...Kh3!
    • 1.Sg6+?
      • 1...Kg5
        • 2.Qh4#
      • 1...Kh3!
    • 1.Rxf5?
      • threat
        • 2.Be7#
      • 1...Sh3
        • 2.Sg2#
        • 2.Sg6#
      • 1...Bxf5+!
  • Keys
    • 1.Be7!
      • threat
        • 2.Rxf5#
      • 1...Rxf4+
        • 2.Rfg6#
      • 1...Ra5+
        • 2.Rf5#
      • 1...Rb5+
        • 2.Rf5#
      • 1...Rc5+
        • 2.Rf5#
      • 1...Rd5+
        • 2.Rf5#
      • 1...Re5+
        • 2.Rf5#
      • 1...Rg5+
        • 2.Sg6#
      • 1...Rxf6+
        • 2.Sd3#
      • 1...Sh3
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(f);CHECK,SBLOCK::QAR(A)+S(B),DCHECK
    • S(b);SBLOCK::QAR(A)+S(B),DCHECK
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINR(f)
    • Try
      • S(B);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(A)
      • Refutation
        • K(e);P-FLIGHT,P_SPINR(f)
    • Try
      • R(E);P_SPINR(E),XR(f)
      • Threat
        • B(C)
      • Refutation
        • B(a);CHECK,XR(E)
  • Actual
    • B(C);
    • Threat
      • B(C)+R(E),XR(f)
    • Vars
      • R(f);CHECK,N_GUARD,P_SPINR(f),XS(B)::B(C)+R(E)
      • R(f);CHECK::B(C)+R(E)
      • R(f);CHECK,SBLOCK::QAR(A)+S(B),DCHECK
      • R(f);CHECK,N_GUARD,P_SPINR(f),XR(E)::QAR(A)+S(B)
      • S(b);SBLOCK::QAR(A)+S(B),DCHECK
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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).