MESON Chess Problem Database

Problem Display
PID: 232666 (8/6QB/p7/2ppp3/2pk2qR/2N5/3PPP1n/3K3b w - - 0 1)

Cuppini, Alessandro

Freie Presse, 1995

8/6QB/p7/2ppp3/2pk2qR/2N5/3PPP1n/3K3b

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.e3#
    • 1...Qxh4
      • 2.e3#
    • 1...Sf3
      • 2.Rxg4#
      • 2.e3#
    • 1...a5
      • 2.Sb5#
  • Tries
    • 1.Qh6?
      • threat
        • 2.Qe3#
      • 1...e4
        • 2.Qf6#
      • 1...Qf4
        • 2.e3#
      • 1...Sf1!
    • 1.Qxg4+?
      • 1...Sxg4
        • 2.e3#
      • 1...e4
        • 2.Qg7#
      • 1...Be4!
    • 1.Qg5?
      • threat
        • 2.Qe3#
      • 1...Qf4
        • 2.e3#
      • 1...e4
        • 2.Qf6#
        • 2.Qxd5#
      • 1...Sf1!
    • 1.f3?
      • threat
        • 2.e3#
      • 1...Qe4
        • 2.Qg1#
      • 1...Sf1
        • 2.Rxg4#
      • 1...Bxf3!
  • Keys
    • 1.f4!
      • threat
        • 2.Qxe5#
      • 1...Qxe2+
        • 2.Sxe2#
      • 1...Qg1+
        • 2.Qxg1#
      • 1...Qxf4
        • 2.Qg1#
        • 2.e3#
      • 1...Qxg7
        • 2.e3#
      • 1...Qf5
        • 2.Qg1#
      • 1...Qh5
        • 2.Qg1#
      • 1...Qe6
        • 2.Qg1#
        • 2.e3#
      • 1...Qg5
        • 2.e3#
      • 1...Sf3
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • Q(e);N_PINP(C)::P(C)
    • Q(e);N_PINP(C),N_SPINQ(e),XR(F)::P(C)
    • P(i);N_GUARD::S(E)
  • Tries
    • Try
      • Q(G);N_PINP(h)
      • Threat
        • QAB1(G)
      • Vars
        • P(h);N_SPINQ(e),OGATEB::QAB(G)
        • Q(e);N_PINP(C)::P(C)
      • Refutation
        • S(b);
    • Try
      • Q(G);CHECK,N_PINP(h),N_SPINP(C),XQ(e)
      • Vars
        • S(b);P_SPINS(b),XQ(G)::P(C)
        • P(h);P_SPINP(h),S_CUTB(a),S_CUTS(b)::QAB(G)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(G);N_PINP(h)
      • Threat
        • QAB1(G)
      • Vars
        • Q(e);N_PINP(C)::P(C)
      • Refutation
        • S(b);
    • Try
      • P(D);N_SPINP(C)
      • Threat
        • P(C)
      • Vars
        • Q(e);OGATE::QAB(G)
        • S(b);N_GUARD::R(F),XQ(e)
      • Refutation
        • B(a);P_PINP(C),XP(D)
  • Actual
    • P(D);N_PINQ(e)
    • Threat
      • QAB1(G),XP(h)
    • Vars
      • Q(e);CHECK,XP(C)::S(E),XQ(e)
      • Q(e);CHECK,N_PINP(C),OGATE::QAB(G),XQ(e)
      • Q(e);N_PINP(C),N_SPINP(h),XQ(G)::P(C)
      • Q(e);N_PINP(C),OGATE::QAB(G)
      • Q(e);OGATE::QAB(G)
      • Q(e);N_PINP(C)::P(C)
      • S(b);N_PINP(C)::P(C)
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).