MESON Chess Problem Database

Problem Display
PID: 268681 (5BK1/1pp2P2/6Q1/3kp3/3pR2p/N7/4R1nb/4n1rB w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schweizerische Schachzeitung, 2022

5BK1/1pp2P2/6Q1/3kp3/3pR2p/N7/4R1nb/4n1rB

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Rxe5#
    • 1...c5
      • 2.Qd6#
    • 1...c6
      • 2.Qd6#
  • Tries
    • 1.Rxd4+?
      • 1...exd4
        • 2.Qe4#
        • 2.Qe6#
      • 1...Kxd4!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qd7#
      • 1...Kc6
        • 2.Qe6#
      • 1...Se3
        • 2.Rxd4#
      • 1...Sf4
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(c);P_PINQ(E)::B(A)+R(D),DCHECK,XP(h)
    • P(j);N_GUARD::QAR1(E)
  • Tries
    • Try
      • R(D);CHECK,P_PINS(c),XP(e)
      • Refutation
        • K(g);N_SPINS(c),P-FLIGHT,XR(D)
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • K(g);N_GUARD,S_FLIGHT::QAR2(E)
      • S(c);P_PINQ(E)::B(A)+R(D),DCHECK,XP(e)
      • S(c);P_PINQ(E)::B(A)+R(D),DCHECK,XP(h)
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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).