MESON Chess Problem Database

Problem Display
PID: 216215 (3K4/2p2p2/1p3p2/B1QPk3/2P2N2/5pP1/5P2/1B1n4 w - - 0 1)

Fuss, Otto

Peetz, E

Sammlung Leichterer Schachaufgaben 2 (Dufresne), 1882

3K4/2p2p2/1p3p2/B1QPk3/2P2N2/5pP1/5P2/1B1n4

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Bc3#
    • 1...Sxf2
      • 2.Bc3#
    • 1...Sc3
      • 2.Bxc3#
    • 1...Se3
      • 2.Bc3#
    • 1...bxa5
      • 2.d6#
    • 1...b5
      • 2.Bxc7#
      • 2.d6#
  • Tries
    • 1.Bxb6?
      • threat
        • 2.Bxc7#
        • 2.Qe7#
        • 2.Qxc7#
        • 2.d6#
      • 1...f5
        • 2.Qe7#
      • 1...Sc3
        • 2.Bxc7#
        • 2.Qe7#
        • 2.Qxc7#
      • 1...Se3
        • 2.Bxc7#
        • 2.Qe7#
        • 2.Qxc7#
      • 1...c6
        • 2.Bc7#
        • 2.Qe7#
        • 2.dxc6#
        • 2.d6#
      • 1...cxb6!
    • 1.Qe3+?
      • 1...Kd6
        • 2.Qe7#
      • 1...Sxe3!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qe7#
        • 2.Qxc7#
      • 1...fxe2
        • 2.f4#
      • 1...bxc5
        • 2.Bxc7#
      • 1...f5
        • 2.Qe7#
      • 1...c6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • S(a);N_GUARD::B(F)
    • S(a);N_GUARD,XP(B)::B(F)
    • S(a);N_GUARD::B(F),XS(a)
    • P(d);N_GUARD,XB(F)::QAR(G)+P(H)
  • Tries
    • Try
      • B(F);XP(d)
      • Threat
        • DUALS(4)
      • Vars
        • P(e);::QAR2(G)
      • Refutation
        • P(f);XB(F)
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(G)
      • Refutation
        • S(a);XQ(G)
  • Actual
    • S(E);
    • Threat
      • DUALS(2)
    • Vars
      • P(b);OGATE,XS(E)::P(B)
      • P(d);OGATE,XQ(G)::B(F),XP(f)
      • P(e);::QAR2(G)
      • P(f);::QAR2(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).