MESON Chess Problem Database

Problem Display
PID: 152405 (6bn/1p5r/Rr2N1p1/bN3kP1/3BR2P/1Kp5/2B3p1/3n2Q1 w - - 0 1)

Guidelli, Giorgio

Good Companions (November), 1915

6bn/1p5r/Rr2N1p1/bN3kP1/3BR2P/1Kp5/2B3p1/3n2Q1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Sxd6#
    • 1...Sb2
      • 2.Qf2#
    • 1...Sf2
      • 2.Qxf2#
    • 1...Se3
      • 2.Qf2#
  • Tries
    • 1.Rxb6?
      • threat
        • 2.Sd6#
        • 2.Rf4#
      • 1...Bxb6
        • 2.Sd6#
      • 1...Rd7
        • 2.Rf4#
      • 1...Bb4
        • 2.Rf4#
      • 1...Sf7
        • 2.Rf4#
      • 1...Bxe6+!
  • Keys
    • 1.Bg7!
      • threat
        • 2.Qc5#
      • 1...Rxb5+
        • 2.Rb4#
      • 1...Bxe6+
        • 2.Rc4#
      • 1...Rxe6
        • 2.Sd4#
      • 1...Rc6
        • 2.Sd4#
      • 1...Rd6
        • 2.Sxd6#
      • 1...Bb4
        • 2.Sd4#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Se3
        • 2.Qf2#
      • 1...Sf7
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(f);N_PINS(G),P_PINS(J)::S(G),XR(f)
    • S(a);N_GUARD::QAR(A)
    • S(a);N_GUARD::QAR(A),XS(a)
  • Tries
    • Try
      • R(I);N_SPINS(G),P_SPINS(J),XR(f)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);XR(I)::S(G)
        • R(i);::B(B)+R(E),DCHECK
        • B(d);::B(B)+R(E),DCHECK
        • S(k);N_PINS(J)::B(B)+R(E),DCHECK
      • Refutation
        • B(j);CHECK,XS(J)
  • Actual
    • B(D);
    • Threat
      • QAR(A)
    • Vars
      • R(f);CHECK,P_PINS(J),XS(G)::B(B)+R(E)
      • B(j);CHECK,SBLOCK,XS(J)::B(B)+R(E)
      • R(f);N_PINS(G),XS(J)::S(G)
      • R(f);N_PINS(G),P_PINS(J)::S(G)
      • R(f);N_PINS(G),P_PINS(J)::S(G),XR(f)
      • B(d);N_PINS(G),P_PINS(J)::S(G)
      • S(a);N_GUARD::QAR(A),XS(a)
      • S(a);N_GUARD::QAR(A)
      • S(k);::S(J)
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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).