MESON Chess Problem Database

Problem Display
PID: 265415 (1BBR1R2/4p3/2pbnr2/2p4P/4k3/1P2N1Q1/1KP1N1P1/8 w - - 0 1)

Aloni, Yoel

Han, Israel

Zadachi i Etyudi, 2010

1BBR1R2/4p3/2pbnr2/2p4P/4k3/1P2N1Q1/1KP1N1P1/8

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Sc3#
      • 2.Qf3#
    • 1...Be5+
      • 2.Qxe5#
    • 1...Bc7
      • 2.Sc3#
    • 1...Bxb8
      • 2.Sc3#
    • 1...Sd4
      • 2.Sc3#
  • Tries
    • 1.Qf3+?
      • 1...Ke5
        • 2.Sc4#
        • 2.Sg4#
      • 1...Rxf3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qd3#
      • 1...Be5+
        • 2.Qxe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Kf5
        • 2.Qg6#
      • 1...Bxg3
        • 2.Sxg3#
      • 1...Rf3
        • 2.Qxf3#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sf4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(d);CHECK,N_GUARD::QAR1(G),XB(d)
    • B(d);::S(C)
    • B(d);XB(I)::S(C)
    • S(e);SBLOCK::S(C)
  • Tries
    • Try
      • Q(G);CHECK
      • Refutation
        • R(f);XQ(G)
  • Actual
    • S(F);
    • Threat
      • QAB1(G)
    • Vars
      • B(d);CHECK,N_GUARD::QAR1(G),XB(d)
      • K(a);P_SPINB(d),S_FLIGHT::QAR1(G)
      • K(a);N_GUARD,P_SPINR(f),P_SPINS(e),S_FLIGHT::QAB1(G)
      • B(d);XQ(G)::S(C),XB(d)
      • R(f);N_GUARD::QAB1(G),XR(f)
      • S(e);SBLOCK::S(C)
      • S(e);S_CUTR(f)::QAB1(G)
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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).