MESON Chess Problem Database

Problem Display
PID: 107708 (2K1k1b1/4pppN/4R1Q1/8/8/8/8/8 w - - 0 1)

Bay, Eugen

Stuttgarter Neues Tagblatt, 1912

2K1k1b1/4pppN/4R1Q1/8/8/8/8/8

#2

4 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf6+?
      • 1...gxf6
        • 2.Qxg8#
      • 1...Kf8!
    • 1.Rd6?
      • threat
        • 2.Rd8#
      • 1...exd6
        • 2.Qe4#
      • 1...e5
        • 2.Re6#
      • 1...e6
        • 2.Rxe6#
      • 1...fxg6!
    • 1.Qf6?
      • threat
        • 2.Rxe7#
        • 2.Qxe7#
      • 1...Bxh7
        • 2.Qxe7#
      • 1...fxe6
        • 2.Qf8#
      • 1...gxf6!
    • 1.Qxg7?
      • threat
        • 2.Sf6#
        • 2.Qf8#
        • 2.Qxg8#
      • 1...fxe6
        • 2.Qf8#
        • 2.Qxg8#
      • 1...f6
        • 2.Sxf6#
        • 2.Rxe7#
        • 2.Qf8#
        • 2.Qxe7#
        • 2.Qxg8#
      • 1...Bxh7!
  • Keys
    • 1.Rf6!
      • 1...Bxh7
        • 2.Qxf7#
      • 1...exf6
        • 2.Qe4#
      • 1...fxg6
        • 2.Rf8#
      • 1...gxf6
        • 2.Qxg8#
      • 1...e5
        • 2.Re6#
      • 1...e6
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • P(c);OGATE,XS(C)::QAR2(B),XB(e)
      • Refutation
        • K(d);N_SPINP(a),P-FLIGHT
    • Try
      • R(A);N_PINP(a),P_PINP(b)
      • Threat
        • R1(A)
      • Vars
        • P(a);OGATEB,XR(A)::QAR(B)
        • P(a);OGATEB::R(A)
        • P(a);OGATEB::R(A),XP(a)
      • Refutation
        • P(b);N_SPINP(b),XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);XS(C)::QAR1(B),XP(a)
        • P(b);N_SPINP(a),OGATE,XR(A)::QAR1(B)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);XP(c)
      • Threat
        • DUALS(3)
      • Refutation
        • B(e);XS(C)
  • Actual
    • R(A);N_PINP(a),P_PINP(b)
    • Vars
      • B(e);N_GUARD,XS(C)::QAB1(B),XP(b)
      • P(a);OGATEB,XR(A)::QAR(B)
      • P(b);N_SPINP(b),OGATE,XQ(B)::R1(A)
      • P(c);OGATE,XR(A)::QAR2(B),XB(e)
      • P(a);OGATEB::R(A)
      • P(a);OGATEB::R(A),XP(a)
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).