MESON Chess Problem Database

Problem Display
PID: 164834 (8/b1p3Nb/R7/3kB3/1Pq3NK/1B1pp3/4P3/Q7 w - - 0 1)

Pirrone, Santi

Revista Romana de Sah, 1959

8/b1p3Nb/R7/3kB3/1Pq3NK/1B1pp3/4P3/Q7

#2

9 + 7

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sf6#
      • 2.Qh1#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bb8
      • 2.Qd4#
    • 1...Be4
      • 2.Sf6#
    • 1...Bg8
      • 2.Qh1#
  • Tries
    • 1.Bxc4+?
      • 1...Ke4
        • 2.Sf6#
        • 2.Qh1#
      • 1...Kxc4!
    • 1.Rd6+?
      • 1...Ke4
        • 2.Sf6#
        • 2.Qh1#
      • 1...cxd6!
    • 1.Qc1?
      • threat
        • 2.Qxc4#
      • 1...Ke4
        • 2.Qh1#
      • 1...Qxb3
        • 2.Qc6#
      • 1...Bd4!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qxc4#
      • 1...Ke4
        • 2.Sf6#
      • 1...Qxb3
        • 2.Sf6#
        • 2.Qc6#
      • 1...Bd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(e);N_GUARD,N_PINS(E)::QAR1(A),XB(e)
    • B(e);N_GUARD::QAR1(A)
    • B(g);N_PINS(E)::S(E)
    • B(g);N_GUARD::QAB(A)
  • Tries
    • Try
      • B(C);CHECK,N_SPINS(E),XQ(c)
      • Refutation
        • K(d);S_FLIGHT,XB(C)
    • Try
      • R(H);CHECK
      • Refutation
        • P(f);XR(H)
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XQ(c)
      • Vars
        • K(d);N_PINS(E),N_SPINQ(c),S_FLIGHT::QAB(A)
        • Q(c);N_PINS(E),N_SPINQ(c),OGATE,XB(C)::QAB1(A)
      • Refutation
        • B(e);N_PINS(E)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XQ(c)
    • Vars
      • K(d);N_PINS(E),N_SPINQ(c),S_FLIGHT::S(E)
      • B(e);N_GUARD,N_PINS(E)::QAR1(A),XB(e)
HTML5 logo

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).