MESON Chess Problem Database

Problem Display
PID: 265544 (B3N1n1/6P1/6pb/2p2krp/K3R3/3NBr2/6p1/4Q3 w - - 0 1)

Handloser, Ralf Chris

Schweizerische Schachzeitung, 2015

B3N1n1/6P1/6pb/2p2krp/K3R3/3NBr2/6p1/4Q3

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rf2
      • 2.Qxf2#
    • 1...Sf6
      • 2.Sd6#
    • 1...c4
      • 2.Qa5#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Sd6#
      • 1...cxd4
        • 2.Qa5#
      • 1...Rf4
        • 2.Rxf4#
      • 1...Rg4
        • 2.Re5#
      • 1...Rgg3!
    • 1.Qc3?
      • threat
        • 2.Sd6#
        • 2.Qe5#
        • 2.Qxc5#
      • 1...Bxg7
        • 2.Sd6#
        • 2.Sxg7#
      • 1...Sf6
        • 2.Sd6#
        • 2.Qe5#
        • 2.Qxf6#
      • 1...Se7
        • 2.Sd6#
        • 2.Qe5#
        • 2.Qf6#
      • 1...c4
        • 2.Sd6#
        • 2.Qa5#
        • 2.Qe5#
      • 1...Rf4!
    • 1.Qa1?
      • threat
        • 2.Sd6#
        • 2.Qe5#
      • 1...Bxg7
        • 2.Sd6#
        • 2.Sxg7#
      • 1...Rf4!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Re5#
      • 1...Rxe3
        • 2.Qf4#
      • 1...Bxg7
        • 2.Qxg5#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Rg4
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(b);OGATEB::QAR(A),XR(b)
    • S(i);SBLOCK::S(H)
    • P(c);OGATEB::QAR(A)
  • Tries
    • Try
      • B(C);
      • Threat
        • S(H)
      • Vars
        • P(c);OGATEB,XB(C)::QAR(A)
        • R(b);N_GUARD::R1(E),XR(b)
        • R(e);SBLOCK::R1(E)
      • Refutation
        • R(e);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • R(b);P_PINR(E)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • R(b);P_PINR(E)
  • Actual
    • Q(A);
    • Threat
      • R1(E)
    • Vars
      • R(b);N_GUARD,XB(C)::QAR1(A)
      • B(h);N_GUARD,XP(F)::QAR1(A),XR(e)
      • R(b);N_GUARD,P_PINR(E)::QAR1(A),XR(b)
      • R(e);P_PINR(E)::S(H)
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).