MESON Chess Problem Database

Problem Display
PID: 162278 (5rB1/8/2b5/R3PpQ1/4kN2/1N1p1pP1/2PK1n2/3n4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Freie Presse, 1990

5rB1/8/2b5/R3PpQ1/4kN2/1N1p1pP1/2PK1n2/3n4

#2

9 + 8

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sh1
      • 2.cxd3#
    • 1...Sh3
      • 2.cxd3#
    • 1...Sg4
      • 2.cxd3#
  • Tries
    • 1.Sg2?
      • threat
        • 2.Qf4#
      • 1...Sh3
        • 2.cxd3#
      • 1...f4!
    • 1.Sxd3?
      • threat
        • 2.Qf4#
      • 1...Sxd3
        • 2.cxd3#
      • 1...f4
        • 2.Sdc5#
      • 1...Sh3!
    • 1.Sh3?
      • threat
        • 2.Qf4#
      • 1...Sxh3
        • 2.cxd3#
      • 1...f4!
    • 1.Sh5?
      • threat
        • 2.Qf4#
      • 1...Sh3
        • 2.cxd3#
      • 1...f4!
    • 1.Se6?
      • threat
        • 2.Qf4#
      • 1...f4
        • 2.Sec5#
      • 1...Sh3
        • 2.cxd3#
      • 1...Bb5!
    • 1.Sg6?
      • threat
        • 2.Qf4#
      • 1...Sh3
        • 2.cxd3#
      • 1...f4!
    • 1.Bd5+?
      • 1...Kxe5
        • 2.Qe7#
      • 1...Bxd5!
    • 1.Ra4+?
      • 1...Kxe5
        • 2.Qe7#
      • 1...Bxa4!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qf4#
      • 1...Sh3
        • 2.cxd3#
      • 1...f4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::P(A),XP(c)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(H)
      • Vars
        • S(b);N_GUARD::P(A),XP(c)
      • Refutation
        • P(f);
    • Try
      • S(E);XP(c)
      • Threat
        • QAR1(H)
      • Vars
        • S(b);OGATE,XS(E)::P(A),XS(b)
        • P(f);::S(E)
      • Refutation
        • S(b);
    • Try
      • S(E);
      • Threat
        • QAR1(H)
      • Vars
        • S(b);N_GUARD,XS(E)::P(A),XP(c)
      • Refutation
        • P(f);
    • Try
      • S(E);
      • Threat
        • QAR1(H)
      • Vars
        • S(b);N_GUARD::P(A),XP(c)
      • Refutation
        • P(f);
    • Try
      • S(E);
      • Threat
        • QAR1(H)
      • Vars
        • P(f);::S(E)
        • S(b);N_GUARD::P(A),XP(c)
      • Refutation
        • B(g);
    • Try
      • S(E);
      • Threat
        • QAR1(H)
      • Vars
        • S(b);N_GUARD::P(A),XP(c)
      • Refutation
        • P(f);
    • Try
      • B(I);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(f),XP(G)::QAR2(H)
      • Refutation
        • B(g);XB(I)
    • Try
      • R(F);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(f),XP(G)::QAR2(H)
      • Refutation
        • B(g);XR(F)
  • Actual
    • S(E);
    • Threat
      • QAR1(H)
    • Vars
      • S(b);N_GUARD::P(A),XP(c)
      • P(f);::S(C)
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).