MESON Chess Problem Database

Problem Display
PID: 109111 (1b6/3NQ2K/8/1n3B1p/r3pk2/3PRp1P/1pN1b2P/4q3 w - - 0 1)

Muller, Dieter

Pachl, Franz

Wola Gulowska, 2002

1b6/3NQ2K/8/1n3B1p/r3pk2/3PRp1P/1pN1b2P/4q3

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Qf6#
  • Tries
    • 1.Rxe4+?
      • 1...Kxf5
        • 2.Se3#
        • 2.Qf6#
      • 1...Rxe4!
    • 1.Qh4+?
      • 1...Kxf5
        • 2.Qf6#
      • 1...Qxh4!
  • Keys
    • 1.Bg6!
      • threat
        • 2.Qf6#
      • 1...Qc3
        • 2.Qh4#
      • 1...Qh4
        • 2.Qxh4#
      • 1...Ra6
        • 2.Rxe4#
      • 1...Be5
        • 2.Qxe5#
      • 1...Sd4
        • 2.Rxe4#
      • 1...Sd6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(g);OGATEB,P-FLIGHT,XB(F)::QAR1(H)
  • Tries
    • Try
      • R(D);CHECK,XP(f)
      • Refutation
        • R(e);XR(D)
    • Try
      • Q(H);CHECK
      • Vars
        • K(g);OGATEB,P-FLIGHT,XB(F)::QAR1(H)
      • Refutation
        • Q(a);XQ(H)
  • Actual
    • B(F);
    • Threat
      • QAR2(H)
    • Vars
      • Q(a);N_GUARD::QAR2(H)
      • Q(a);N_GUARD::QAR2(H),XQ(a)
      • R(e);N_GUARD::R1(D),XP(f)
      • B(j);N_GUARD::QAB1(H),XB(j)
      • S(h);S_CUTR(e)::R1(D),XP(f)
      • S(h);S_CUTB(j)::QAB1(H)
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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).