MESON Chess Problem Database

Problem Display
PID: 194084 (8/qn2Q3/1r3N1K/1r1b4/7k/5Ppp/4N2b/8 w - - 0 1)

Rinaldini, Angelo

3rd Prize, Good Companions, 1917

8/qn2Q3/1r3N1K/1r1b4/7k/5Ppp/4N2b/8

#2

5 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf6+
      • 2.Qxf6#
    • 1...Ba2
      • 2.Qe4#
    • 1...Bb3
      • 2.Qe4#
    • 1...Bc4
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...Bc6
      • 2.Sd5#
    • 1...Be6
      • 2.Sd5#
    • 1...Bf7
      • 2.Qe4#
    • 1...Bg8
      • 2.Qe4#
    • 1...Sd6
      • 2.Sd7#
  • Tries
    • 1.Qb4+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Rxb4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sf5#
      • 1...Rxf6+
        • 2.Qxf6#
      • 1...Bxf3
        • 2.Sxf3#
      • 1...Ba2
        • 2.Qe4#
      • 1...Bb3
        • 2.Qe4#
      • 1...Bc4
        • 2.Qe4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Bc6
        • 2.Sd5#
      • 1...Be6
        • 2.Sd5#
      • 1...Bf7
        • 2.Qe4#
      • 1...Bg8
        • 2.Qe4#
      • 1...Sd6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(g);CHECK,OGATE,P_SPINR(g),XS(C)::QAB(E),XR(g)
    • B(f);N_GUARD::QAR(E)
    • B(f);N_GUARD::QAR(E),XB(f)
    • B(f);N_PINS(C)::QAB(E)+S(C)
    • S(i);N_PINS(C)::QAB(E)+S(C)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR(E),XB(f)
      • Refutation
        • R(e);XQ(E)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • R(g);CHECK,OGATE,P_SPINR(g),XS(C)::QAB(E),XR(g)
      • B(f);XP(B)::S(A),XB(f)
      • B(f);N_GUARD::QAR(E)
      • B(f);N_GUARD::QAR(E),XB(f)
      • B(f);N_PINS(C)::QAB(E)+S(C)
      • S(i);N_PINS(C)::QAB(E)+S(C)
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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).