MESON Chess Problem Database

Problem Display
PID: 147700 (KQ2n1b1/2pPk1nR/4p1P1/3pr1P1/BN6/5r2/1B6/5R2 w - - 0 1)

Chicco, Adriano

L'Italia Scacchistica, 1931

KQ2n1b1/2pPk1nR/4p1P1/3pr1P1/BN6/5r2/1B6/5R2

#2

10 + 9

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.d8Q#
    • 1...Rb3
      • 2.d8Q#
    • 1...Rc3
      • 2.d8Q#
    • 1...Rd3
      • 2.d8Q#
    • 1...Rfe3
      • 2.d8Q#
    • 1...Rg3
      • 2.d8Q#
    • 1...Rh3
      • 2.d8Q#
    • 1...Rf8
      • 2.d8Q#
    • 1...Sd6
      • 2.d8Q#
    • 1...Sf6
      • 2.d8Q#
    • 1...c5
      • 2.dxe8Q#
      • 2.dxe8R#
    • 1...c6
      • 2.dxe8Q#
  • Tries
    • 1.Sc6+?
      • 1...Kxd7
        • 2.Qd8#
      • 1...Kf8
        • 2.Ba3#
      • 1...Kd6!
  • Keys
    • 1.Ba3!
      • threat
        • 2.Sxd5#
      • 1...Kd6
        • 2.Sd3#
      • 1...Kf8
        • 2.Sc6#
      • 1...Rxa3
        • 2.d8Q#
      • 1...Sd6
        • 2.d8Q#
      • 1...d4
        • 2.Sd5#
      • 1...c5
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...c6
        • 2.dxe8Q#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • R(a);P_PINB(C)::P=Q
    • R(a);::P=Q
    • S(h);::P=Q
    • P(e);::PXS(h)=Q
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(G)::QAR1(J)
        • K(f);N_SPINS(g),P_SPINR(a),P_SPINS(h),S_FLIGHT::B(B)
      • Refutation
        • K(f);N_SPINS(g),P_SPINP(e),S_FLIGHT
  • Actual
    • B(B);
    • Threat
      • B(B)+S(D),DCHECK,XP(b)
    • Vars
      • K(f);N_SPINS(g),P_SPINP(e),S_FLIGHT::B(B)+S(D)
      • K(f);N_SPINS(g),P_SPINR(a),P_SPINS(h),S_FLIGHT::B(B)+S(D)
      • R(a);P_PINB(C),XB(B)::P=Q
      • S(h);::P=Q
      • P(b);::B(B)+S(D),DCHECK
      • P(e);::PXS(h)=Q
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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).