MESON Chess Problem Database

Problem Display
PID: 223083 (8/6K1/3p3Q/5R2/1nPk4/1Pp5/4nN2/8 w - - 0 1)

Hulsen, Bernhard

Deutsche Schachzeitung, 1885

8/6K1/3p3Q/5R2/1nPk4/1Pp5/4nN2/8

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qf4#
    • 1...Sg1
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sa2
      • 2.Rd5#
    • 1...Sc2
      • 2.Rd5#
    • 1...Sd3
      • 2.Rd5#
    • 1...Sd5
      • 2.Rxd5#
    • 1...Sa6
      • 2.Rd5#
    • 1...Sc6
      • 2.Rd5#
    • 1...d5
      • 2.Qb6#
  • Tries
    • 1.Qd2+?
      • 1...Sd3
        • 2.Rd5#
        • 2.Qxd3#
      • 1...cxd2!
    • 1.Qh4+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Ke3!
  • Keys
    • 1.Re5!
      • threat
        • 2.Qe3#
      • 1...Kxe5
        • 2.Qf6#
      • 1...dxe5
        • 2.Qb6#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sc2
        • 2.Rd5#
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • S(a);N_GUARD::QAR2(E)
    • S(a);N_GUARD::QAR2(E),XS(a)
    • S(c);N_GUARD::R1(D)
    • S(c);N_GUARD::R1(D),XS(c)
    • P(e);OGATE::QAB(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • P(b);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR2(E),XS(a)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • QAB1(E)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(D)::QAB1(E)
      • P(e);OGATE,SBLOCK,XR(D)::QAB(E)
      • S(c);N_GUARD::R1(D),XS(c)
      • S(a);N_GUARD::QAR2(E),XS(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).