MESON Chess Problem Database

Problem Display
PID: 203647 (1K6/2Pp1NN1/b5Qn/5rRr/1bB1kp2/6R1/5B2/8 w - - 0 1)

Cauveren, Jonas Ephraim

Brisbane Courier, 1924

1K6/2Pp1NN1/b5Qn/5rRr/1bB1kp2/6R1/5B2/8

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.Qxf5#
    • 1...Sxf7
      • 2.Qxf5#
    • 1...Sg8
      • 2.Qxf5#
  • Tries
    • 1.Qe6+?
      • 1...Re5
        • 2.Bd5#
        • 2.Qxe5#
      • 1...dxe6!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qd4#
      • 1...fxg3
        • 2.Qe3#
      • 1...Rb5
        • 2.Bd3#
      • 1...Rc5
        • 2.Sd6#
      • 1...Rd5
        • 2.Bxd5#
      • 1...Bc3
        • 2.Qb1#
      • 1...Bc5
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • S(g);N_GUARD::QAB1(E),XR(d)
    • S(g);N_GUARD,XS(G)::QAB1(E),XR(d)
  • Tries
    • Try
      • Q(E);CHECK,N_PINR(d)
      • Refutation
        • P(h);XQ(E)
  • Actual
    • Q(E);N_PINR(d)
    • Threat
      • QAR1(E)
    • Vars
      • P(c);N_GUARD,XR(B)::QAR1(E)
      • R(d);P_PINQ(E),S_CUTB(f)::B(C)
      • R(d);S_CUTB(a)::S(G)
      • R(d);N_GUARD::B(C),XR(d)
      • B(a);OGATE::QAB(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).