MESON Chess Problem Database

Problem Display
PID: 72689 (5B1b/8/8/5p2/1RNpk3/4P3/QK3PR1/1n5B w - - 0 1)

Foschini, Ettore

L'Italia Scacchistica, 1917

5B1b/8/8/5p2/1RNpk3/4P3/QK3PR1/1n5B

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Rg6#
    • 1...d3+
      • 2.Rg7#
  • Tries
    • 1.Qxb1+?
      • 1...Kd5
        • 2.Rg6#
      • 1...d3+
        • 2.Rg7#
      • 1...Kf3!
    • 1.f3+?
      • 1...Kd3
        • 2.Qxb1#
      • 1...Kxf3
        • 2.Qa8#
      • 1...Kd5!
  • Keys
    • 1.f4!
      • threat
        • 2.Rd2#
      • 1...dxe3+
        • 2.Se5#
      • 1...d3+
        • 2.Rg7#
      • 1...Kd3
        • 2.Qxb1#
      • 1...Kf3
        • 2.Qa8#
      • 1...Kd5
        • 2.Rg6#
      • 1...Sd2
        • 2.Rxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(A)+R(E)
    • P(b);CHECK,SBLOCK::B(A)+R(E)
  • Tries
    • Try
      • Q(B);CHECK,XS(a)
      • Vars
        • K(c);S_FLIGHT::B(A)+R(E)
        • P(b);CHECK,P_SPINP(b)::B(A)+R(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(B),XS(a)
        • K(c);S_FLIGHT,XP(D)::QAB(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • P(D);
    • Threat
      • B(A)+R(E)
    • Vars
      • P(b);CHECK,SBLOCK,XP(F)::R(G)+S(H)
      • P(b);CHECK,SBLOCK::B(A)+R(E)
      • K(c);S_FLIGHT::QAB(B),XS(a)
      • K(c);S_FLIGHT::QAB(B)
      • K(c);S_FLIGHT::B(A)+R(E)
      • S(a);::B(A)+R(E),XS(a)
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).