MESON Chess Problem Database

Problem Display
PID: 237262 (B2R3B/n1p5/1Nqn4/5p2/2P1kP2/1R5N/2KP4/6bb w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schweizerische Schachzeitung, 2013

B2R3B/n1p5/1Nqn4/5p2/2P1kP2/1R5N/2KP4/6bb

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Bxd5#
    • 1...Bh2
      • 2.Re3#
    • 1...Be3
      • 2.Rxe3#
    • 1...Sdb5
      • 2.Re8#
    • 1...Se8
      • 2.Rxe8#
    • 1...Sab5
      • 2.Bxc6#
    • 1...Sc8
      • 2.Bxc6#
  • Tries
    • 1.Rxd6?
      • threat
        • 2.Re6#
      • 1...Be3
        • 2.Rxe3#
      • 1...Bd4
        • 2.Rxd4#
      • 1...cxd6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sg5#
      • 1...Qxc4+
        • 2.Sc3#
      • 1...Qxd5
        • 2.Bxd5#
      • 1...Sf7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(e);N_PINP(E),OGATE::B(H),XQ(e)
    • B(a);N_GUARD::R1(C)
    • B(a);N_GUARD::R1(C),XB(a)
    • S(f);N_GUARD::R(I)
    • S(f);N_GUARD::R(I),XS(f)
    • S(g);N_GUARD::B(H),XQ(e)
  • Tries
    • Try
      • R(I);XS(f)
      • Threat
        • R(I)
      • Vars
        • B(a);N_GUARD::R1(C),XB(a)
        • B(a);N_GUARD::R1(I),XB(a)
      • Refutation
        • P(h);XR(I)
  • Actual
    • S(G);N_PINQ(e)
    • Threat
      • S(D)
    • Vars
      • Q(e);CHECK,XP(E)::B(H)+S(G),DCHECK
      • Q(e);N_PINP(E),OGATE,P_SPINQ(e),XS(G)::B(H),XQ(e)
      • S(f);::S(G)
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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).