MESON Chess Problem Database

Problem Display
PID: 31473 (8/1n4BK/7N/2p4N/2P1k1p1/5r1p/6n1/3Q3B w - - 0 1)

Rosenkilde, D Harry

The Problemist, 1927

8/1n4BK/7N/2p4N/2P1k1p1/5r1p/6n1/3Q3B

#2

7 + 7

5454 Near Snap 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qe2#
    • 1...Re3
      • 2.Qd5#
    • 1...Rf4
      • 2.Qe2#
    • 1...Rf5
      • 2.Qe2#
    • 1...Rf7
      • 2.Qe2#
    • 1...Rf8
      • 2.Qe2#
    • 1...Se1
      • 2.Qe2#
    • 1...Sh4
      • 2.Qe2#
  • Tries
    • 1.Qc2+?
      • 1...Ke3
        • 2.Sxg4#
      • 1...Rd3!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qd5#
      • 1...Kxf5
        • 2.Qd5#
      • 1...Rxf5
        • 2.Qe2#
      • 1...Rd3
        • 2.Qxg4#
      • 1...Se3
        • 2.Sfg3#
      • 1...Sf4
        • 2.Shg3#

This anticipates 147140(1928)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD,P_SPINS(a)::QAR2(A)
    • R(b);P_SPINS(a),SBLOCK::QAB1(A)
    • R(b);N_GUARD,P_PINB(F),P_SPINS(a)::QAR2(A)
    • S(a);N_GUARD,P_SPINR(b)::QAR2(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT::S(E),XP(e)
      • Refutation
        • R(b);P_SPINR(b),P_SPINS(a)
  • Actual
    • S(E);
    • Threat
      • QAB1(A)
    • Vars
      • K(d);S_FLIGHT,XS(E)::QAR2(A)
      • R(b);N_GUARD,P_SPINS(a),SBLOCK,XS(E)::QAR2(A)
      • R(b);OGATE,P_SPINS(a),SBLOCK::QAR2(A),XP(e)
      • S(a);P_SPINR(b),SBLOCK::S(E)
      • S(a);P_SPINR(b),SBLOCK::S(D)
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).