MESON Chess Problem Database

Problem Display
PID: 194981 (8/3Q4/8/5R2/4k3/8/b1n1PP1B/b1n4K w - - 0 1)

Madsen, Arthur Valdemar

Nationaltidende, 1918

8/3Q4/8/5R2/4k3/8/b1n1PP1B/b1n4K

#2

6 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Rxe5#
    • 1...Bb1
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Sb3
      • 2.Qd3#
      • 2.Qd5#
    • 1...Sd3
      • 2.Qxd3#
      • 2.exd3#
    • 1...Se3
      • 2.f3#
    • 1...Sd4
      • 2.Re5#
  • Tries
    • 1.Qc6+?
      • 1...Kd4
        • 2.Be5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Kxf5!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Qf5#
      • 1...Bxd5
        • 2.Qg4#
      • 1...Be5
        • 2.Rxe5#
      • 1...Se3
        • 2.f3#
      • 1...Sd4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::R1(E),XB(a)
    • B(c);N_GUARD::QAB1(F)
    • B(c);N_GUARD::QAB1(F),XB(c)
    • S(d);SBLOCK::P(C)
    • S(d);S_CUTB(a)::R1(E)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);P-FLIGHT::B(D)
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • K(e);S_FLIGHT,XR(E)
  • Actual
    • R(E);
    • Threat
      • QAB1(F)
    • Vars
      • B(c);SBLOCK,XR(E)::QAR2(F)
      • B(a);N_GUARD::R1(E),XB(a)
      • S(d);SBLOCK::P(C)
      • S(d);S_CUTB(a)::R1(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).