MESON Chess Problem Database

Problem Display
PID: 189524 (8/6p1/2pB1NB1/1prpK3/1PprP2k/2PpR1Rp/3Np2b/4Q1n1 w - - 0 1)

Markus, Gustav

Das Interessante Blatt, 1911

8/6p1/2pB1NB1/1prpK3/1PprP2k/2PpR1Rp/3Np2b/4Q1n1

#2

11 + 13

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg3+
      • 2.Qxg3#
    • 1...Sf3+
      • 2.Sxf3#
  • Tries
    • 1.Kxd4?
      • threat
        • 2.Rg4#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...Bxg3
        • 2.Qxg3#
      • 1...gxf6!
    • 1.Kf5?
      • threat
        • 2.Rxh3#
        • 2.Rg4#
      • 1...Bxg3
        • 2.Bxg3#
        • 2.Qxg3#
      • 1...Sf3
        • 2.Sxf3#
        • 2.Rg4#
      • 1...dxe4+!
  • Keys
    • 1.Be7!
      • threat
        • 2.Sg4#
        • 2.Sxd5#
        • 2.Sh5#
        • 2.Sd7#
        • 2.Sh7#
        • 2.Se8#
        • 2.Sg8#
      • 1...Rxe4+
        • 2.Sfxe4#
      • 1...Bxg3+
        • 2.Qxg3#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...dxe4+
        • 2.Sd5#
      • 1...gxf6+
        • 2.Bxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(c);CHECK,OGATE,P_SPINB(c),XR(E)::QAB1(A),XB(c)
    • S(a);CHECK,N_GUARD::S(B),XS(a)
  • Tries
    • Try
      • K(H);N_SPINR(E),S_FLIGHT,XR(g)
      • Threat
        • QAB(A)+R(E),DCHECK
      • Vars
        • S(a);CHECK,N_GUARD::S(B),XS(a)
        • B(c);OGATE,P_SPINB(c),XR(E)::QAB1(A),XB(c)
      • Refutation
        • P(m);XS(J)
    • Try
      • K(H);N_SPINR(E),P-FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • P(k);CHECK,XP(G)
  • Actual
    • B(I);
    • Threat
      • DUALS(7)
    • Vars
      • R(g);CHECK,XP(G)::B(I)+S(J),XR(g)
      • B(c);CHECK,OGATE,P_SPINB(c),XR(E)::QAB1(A),XB(c)
      • S(a);CHECK,N_GUARD::S(B),XS(a)
      • P(k);CHECK,XP(G)::B(I)+S(J)
      • P(m);CHECK,OGATE,P_SPINP(m),XS(J)::B(I),XP(m)
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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).