MESON Chess Problem Database

Problem Display
PID: 109166 (1NN5/B2p4/P2P1K2/RprknB2/2R1p1p1/2pb1P2/7Q/8 w - - 0 1)

Pfeiffer, Mieczyslaw

Marienstrass MT, 1947

1NN5/B2p4/P2P1K2/RprknB2/2R1p1p1/2pb1P2/7Q/8

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Qxe5#
    • 1...Rc6
      • 2.Rd4#
    • 1...Rc7
      • 2.Rd4#
    • 1...Rxc8
      • 2.Rd4#
    • 1...Bxc4
      • 2.Qxe5#
    • 1...Sxf3
      • 2.Sb6#
    • 1...Sc6
      • 2.Sb6#
    • 1...Sg6
      • 2.Sb6#
    • 1...Sf7
      • 2.Sb6#
    • 1...bxc4
      • 2.Qxe5#
    • 1...b4
      • 2.Raxc5#
  • Keys
    • 1.Sc6!
      • threat
        • 2.Rxc5#
      • 1...Kxc4
        • 2.Qa2#
      • 1...Kxc6
        • 2.Rxc5#
      • 1...Rxc4
        • 2.S6e7#
      • 1...Rxc6
        • 2.Rd4#
      • 1...Bxc4
        • 2.Bxe4#
      • 1...Sxc4
        • 2.S8e7#
      • 1...Sxc6
        • 2.Sb6#
      • 1...bxc4
        • 2.Rxc5#
      • 1...dxc6
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(f);P_SPINP(e),SBLOCK,XR(C)::QAR1(A),XS(h)
    • R(f);P_PINP(G),P_SPINP(e)::R1(C)
    • R(f);P_SPINP(e)::R1(C)
    • R(f);P_SPINP(e),XS(K)::R1(C)
    • B(b);SBLOCK,XR(C)::QAR1(A),XS(h)
    • S(h);XP(B)::S(K)
    • S(h);::S(K)
    • P(e);P_SPINR(f),SBLOCK,XR(C)::QAR1(A),XS(h)
    • P(e);OGATE,P_SPINR(f)::R1(D),XR(f)
  • Actual
    • S(J);
    • Threat
      • R1(C),XR(f)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XR(C)::QAB(A)
      • K(g);P_SPINR(f),S_FLIGHT,XS(J)::R1(C),XR(f)
      • R(f);P_SPINP(e),SBLOCK,XR(C)::S(J)
      • R(f);P_PINP(G),P_SPINP(e),SBLOCK,XS(J)::R1(C)
      • B(b);N_GUARD,SBLOCK,XR(C)::B(E),XP(c)
      • S(h);SBLOCK,XR(C)::S(K)
      • S(h);SBLOCK,XS(J)::S(K)
      • P(e);OGATE,P_SPINR(f),XR(C)::R1(D),XR(f)
      • P(i);N_GUARD,SBLOCK,XS(J)::B(E)
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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).