MESON Chess Problem Database

Problem Display
PID: 263948 (2BBbRQ1/3P1q2/4k3/8/2P5/3K4/8/8 w - - 0 1)

Foschini, Ettore

Skakbladet, 1932

2BBbRQ1/3P1q2/4k3/8/2P5/3K4/8/8

#2

7 + 3

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Rxe8+?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kd6!
    • 1.Qxf7+?
      • 1...Ke5
        • 2.Bc7#
        • 2.Qd5#
        • 2.Qf6#
        • 2.Qe7#
      • 1...Kd6
        • 2.Qd5#
      • 1...Bxf7!
    • 1.Qg6+?
      • 1...Ke5
        • 2.Bc7#
      • 1...Qf6
        • 2.Qxf6#
      • 1...Qxg6+!
  • Keys
    • 1.Bc7!
      • 1...Kf5
        • 2.dxe8S#
      • 1...Kf6
        • 2.d8Q#
        • 2.d8B#
      • 1...Ke7
        • 2.d8Q#
        • 2.d8B#
      • 1...Qxg8
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Bxd7
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK,XB(c)
      • Vars
        • K(a);N_GUARD,N_SPINQ(b),S_CUTQ(b),S_CUTQ(b),S_FLIGHT::QAR1(G)
      • Refutation
        • K(a);N_SPINQ(b),P-FLIGHT
    • Try
      • Q(G);CHECK,XQ(b)
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(G)
      • Refutation
        • B(c);XQ(G)
    • Try
      • Q(G);CHECK,N_PINQ(b)
      • Vars
        • K(a);N_GUARD,P-FLIGHT,S_CUTQ(b),S_CUTQ(b)::B(E)
        • Q(b);N_GUARD,P_SPINQ(b)::QAR1(G),XQ(b)
      • Refutation
        • Q(b);CHECK,XQ(G)
  • Actual
    • B(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::PXB(c)=S
      • K(a);P-FLIGHT,S_CUTB(c)::P=Q
      • K(a);N_SPINQ(b),P-FLIGHT,S_CUTB(c)::P=Q
      • Q(b);N_SPINQ(b),XQ(G)::PXB(c)=Q
      • B(c);N_GUARD,P_SPINB(c),XP(C)::QAB1(G),XQ(b)
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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).