MESON Chess Problem Database

Problem Display
PID: 162289 (1B6/1Q1p4/3Rr1q1/6p1/5k2/5NnP/3P1nK1/2N5 w - - 0 1)

Thomas, Georg

Nationaltidende, 1941

(First published on Sun Mar 30 1941)

1B6/1Q1p4/3Rr1q1/6p1/5k2/5NnP/3P1nK1/2N5

#2

8 + 7

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Rd4#
    • 1...Re1
      • 2.Rf6#
    • 1...Re2
      • 2.Rf6#
    • 1...Re3
      • 2.Rf6#
    • 1...Re4
      • 2.Rf6#
    • 1...Rf6
      • 2.Rxf6#
    • 1...Re7
      • 2.Rf6#
    • 1...Re8
      • 2.Rf6#
    • 1...Sf5
      • 2.Rd4#
  • Tries
    • 1.Rxe6+?
      • 1...Kf5
        • 2.Sd4#
        • 2.Qd5#
      • 1...d6!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Rd4#
      • 1...Ke4
        • 2.Rd4#
      • 1...Rxd6
        • 2.Qe5#
      • 1...Re5
        • 2.Qxe5#
      • 1...Qe4
        • 2.Qxg5#
      • 1...Re4
        • 2.Rf6#
      • 1...Sfe4
        • 2.Sd3#
      • 1...Sge4
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(f);SBLOCK::B(H)+R(F),DCHECK
    • R(e);OGATE::B(H)+R(F),DCHECK
    • R(e);OGATE::B(H)+R(F),DCHECK,XR(e)
    • S(b);SBLOCK::B(H)+R(F),DCHECK
  • Tries
    • Try
      • R(F);CHECK,XR(e)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • Q(G);
    • Threat
      • B(H)+R(F),DCHECK
    • Vars
      • K(c);P-FLIGHT::R1(F)
      • R(e);N_GUARD,P_SPINR(e),XR(F)::QAB1(G)
      • R(e);N_GUARD::QAB1(G),XR(e)
      • Q(f);N_GUARD,P_PINS(D),SBLOCK::QAB1(G),XP(d)
      • R(e);OGATE,SBLOCK::B(H)+R(F),DCHECK
      • S(a);N_GUARD,SBLOCK,S_CUTQ(f)::S(A)
      • S(b);N_GUARD,SBLOCK,S_CUTR(e)::S(A)
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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).