MESON Chess Problem Database

Problem Display
PID: 250114 (1KN1N3/1p1r2pQ/6P1/Rq1r1kpp/4R3/8/7B/1B6 w - - 0 1)

Schuller, EG

3rd Prize, Midweek Sports Referee, 1927

1KN1N3/1p1r2pQ/6P1/Rq1r1kpp/4R3/8/7B/1B6

#2

9 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Se7#
    • 1...Re7
      • 2.Sxe7#
    • 1...g4
      • 2.Re5#
      • 2.Qxh5#
  • Tries
    • 1.Sxg7+?
      • 1...Kf6
        • 2.Re6#
      • 1...Rxg7!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qe6#
      • 1...Kxg6
        • 2.Re6#
      • 1...g4
        • 2.Re5#
      • 1...Qa6
        • 2.Rc4#
      • 1...Qc6
        • 2.Rc4#
      • 1...Qb6
        • 2.Rb4#
      • 1...Re5
        • 2.Rf4#
      • 1...R5d6
        • 2.Rd4#
      • 1...R7d6
        • 2.Se7#
      • 1...Re7
        • 2.Sxe7#
      • 1...Rf7
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(g);N_GUARD::S(H)
    • R(g);N_GUARD::S(H),XR(g)
  • Tries
    • Try
      • S(I);CHECK,XP(h)
      • Vars
        • K(c);N_GUARD,P-FLIGHT::R1(C)
      • Refutation
        • R(g);XS(I)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • K(c);N_GUARD,P_SPINP(h),S_FLIGHT,XP(E)::B(A)+R(C),DCHECK
      • P(d);SBLOCK::B(A)+R(C),DCHECK
      • Q(a);N_GUARD,P_SPINR(b)::B(A)+R(C)
      • R(b);SBLOCK::B(A)+R(C),DCHECK
      • R(b);P_SPINQ(a)::B(A)+R(C)
      • R(g);N_GUARD::S(H)
      • R(g);N_GUARD::S(H),XR(g)
      • R(g);N_GUARD::QAR2(F),XR(g)
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).