MESON Chess Problem Database

Problem Display
PID: 82209 (1N6/nB2p1K1/4k2p/R3P1p1/3pP1bq/3r2NR/5b1B/5Q2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Scacco!, 1978

1N6/nB2p1K1/4k2p/R3P1p1/3pP1bq/3r2NR/5b1B/5Q2

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg3
      • 2.Rxh6#
    • 1...Rd1
      • 2.Qc4#
    • 1...Rd2
      • 2.Qc4#
    • 1...Ra3
      • 2.Qc4#
    • 1...Rb3
      • 2.Qc4#
    • 1...Re3
      • 2.Qc4#
    • 1...Rf3
      • 2.Qc4#
    • 1...Rxg3
      • 2.Qc4#
    • 1...Be1
      • 2.Qf7#
    • 1...Bg1
      • 2.Qf7#
    • 1...Be3
      • 2.Qf7#
    • 1...Bxg3
      • 2.Qf7#
    • 1...Bf5
      • 2.exf5#
    • 1...Sc6
      • 2.Bc8#
    • 1...Sc8
      • 2.Bxc8#
  • Tries
    • 1.Se2?
      • threat
        • 2.Bd5#
      • 1...Qg3
        • 2.Rxh6#
      • 1...Bg3
        • 2.Qf7#
      • 1...Sc6
        • 2.Bc8#
      • 1...Rg3!
    • 1.Sf5?
      • threat
        • 2.Bd5#
      • 1...Qg3
        • 2.Rxh6#
      • 1...Rg3
        • 2.Qc4#
      • 1...Sc6
        • 2.Bc8#
      • 1...Bg3!
    • 1.Sh5?
      • threat
        • 2.Bd5#
      • 1...Rg3
        • 2.Qc4#
      • 1...Bg3
        • 2.Qf7#
      • 1...Sc6
        • 2.Bc8#
      • 1...Qg3!
  • Keys
    • 1.Sh1!
      • threat
        • 2.Bd5#
      • 1...Qg3
        • 2.Rxh6#
      • 1...Rg3
        • 2.Qc4#
      • 1...Bg3
        • 2.Qf7#
      • 1...Sc6
        • 2.Bc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • Q(e);OGATE,XS(C)::R(D),XP(h)
    • R(b);OGATE::QAB(A)
    • R(b);OGATE,XS(C)::QAB(A)
    • B(a);OGATE::QAB1(A)
    • B(a);OGATE,XS(C)::QAB1(A)
    • B(d);OGATE::P(E),XB(d)
    • S(i);N_GUARD::B(H)
    • S(i);N_GUARD::B(H),XS(i)
  • Tries
    • Try
      • S(C);
      • Threat
        • B(H)
      • Vars
        • Q(e);OGATE::R(D),XP(h)
        • B(a);OGATE::QAB1(A)
        • S(i);N_GUARD::B(H)
      • Refutation
        • R(b);
    • Try
      • S(C);
      • Threat
        • B(H)
      • Vars
        • Q(e);OGATE::R(D),XP(h)
        • R(b);OGATE::QAB(A)
        • S(i);N_GUARD::B(H)
      • Refutation
        • B(a);
    • Try
      • S(C);
      • Threat
        • B(H)
      • Vars
        • R(b);OGATE::QAB(A)
        • B(a);OGATE::QAB1(A)
        • S(i);N_GUARD::B(H)
      • Refutation
        • Q(e);
  • Actual
    • S(C);
    • Threat
      • B(H)
    • Vars
      • Q(e);OGATE::R(D),XP(h)
      • R(b);OGATE::QAB(A)
      • B(a);OGATE::QAB1(A)
      • S(i);N_GUARD::B(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).