MESON Chess Problem Database

Problem Display
PID: 82012 (Q1B1r3/1n3R2/2N1p2B/3Pp3/2P1k2K/5NpR/2b1P2b/1n6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Magyar Sakkelet, 1980

Q1B1r3/1n3R2/2N1p2B/3Pp3/2P1k2K/5NpR/2b1P2b/1n6

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Sxd2#
    • 1...Sa3
      • 2.Sd2#
    • 1...Sc3
      • 2.Sd2#
    • 1...g2
      • 2.Sg5#
    • 1...exd5
      • 2.Bf5#
  • Tries
    • 1.Kh5?
      • threat
        • 2.Rh4#
      • 1...g2
        • 2.Sg5#
      • 1...Rg8!
    • 1.Qa3?
      • threat
        • 2.Sg5#
        • 2.Qe3#
      • 1...Sxa3
        • 2.Sd2#
      • 1...Rg8
        • 2.Qe3#
      • 1...Bd3
        • 2.Qxd3#
        • 2.exd3#
      • 1...Bg1
        • 2.Sg5#
      • 1...Sc3
        • 2.Sd2#
      • 1...Bb3!
    • 1.Qa7?
      • threat
        • 2.Sg5#
        • 2.Qe3#
      • 1...Rg8
        • 2.Qe3#
      • 1...Bg1
        • 2.Sg5#
      • 1...Sc5!
    • 1.Qb8?
      • threat
        • 2.Qxe5#
      • 1...exd5
        • 2.Bf5#
      • 1...g2
        • 2.Sg5#
      • 1...Sd6!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qxe5#
      • 1...exd5
        • 2.Bf5#
      • 1...Sc3
        • 2.Sd2#
      • 1...g2
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::S(B),XS(a)
    • S(a);N_GUARD::S(B)
    • P(d);::S(B)
    • P(g);OGATE,XP(F)::B(K)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • R(C)
      • Vars
        • P(d);::S(B)
      • Refutation
        • R(i);
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,XQ(J)::S(B)
        • R(i);::QAR1(J)
        • B(c);::S(B)
        • S(a);N_GUARD::S(B)
      • Refutation
        • B(b);
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(i);::QAR1(J)
        • B(c);::S(B)
      • Refutation
        • S(h);
    • Try
      • Q(J);
      • Threat
        • QAR1(J),XP(f)
      • Vars
        • P(g);OGATE,XP(F)::B(K)
        • P(d);::S(B)
      • Refutation
        • S(h);
  • Actual
    • Q(J);
    • Threat
      • QAR1(J),XP(f)
    • Vars
      • P(g);OGATE,XP(F)::B(K)
      • S(a);N_GUARD::S(B)
      • P(d);::S(B)
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).