MESON Chess Problem Database

Problem Display
PID: 224745 (5b2/q5p1/3R4/N3kB2/1PP4B/2n1p3/7K/4Q3 w - - 0 1)

Schiffer, Vincenz

Wiener Hausfrauen-Zeitung, 1887

5b2/q5p1/3R4/N3kB2/1PP4B/2n1p3/7K/4Q3

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Qg3#
  • Tries
    • 1.Rd5+?
      • 1...Kf4
        • 2.Qg3#
        • 2.Qf1#
      • 1...Sxd5!
    • 1.Re6+?
      • 1...Kd4
        • 2.Qxe3#
      • 1...Kf4
        • 2.Qf1#
      • 1...Kxf5!
    • 1.Qf2?
      • threat
        • 2.Bg3#
      • 1...Kxd6
        • 2.Qg3#
        • 2.Qf4#
      • 1...Bxd6
        • 2.Sc6#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Qd4
        • 2.Re6#
      • 1...Se2
        • 2.Rd5#
      • 1...Se4
        • 2.Rd5#
      • 1...exf2!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Bg3#
      • 1...Kxd6
        • 2.Qf4#
      • 1...Bxd6
        • 2.Sc6#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Qd4
        • 2.Re6#
      • 1...Se2
        • 2.Rd5#
      • 1...Se4
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(b),S_FLIGHT,XR(H)::QAB(A)
  • Tries
    • Try
      • R(H);CHECK
      • Refutation
        • S(a);XR(H)
    • Try
      • R(H);CHECK
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAB1(A),XP(b)
        • K(c);N_SPINP(b),S_FLIGHT::QAR(A)
      • Refutation
        • K(c);N_SPINP(b),P-FLIGHT,XB(G)
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • B(E)
      • Vars
        • B(f);SBLOCK,XR(H)::S(F)
        • S(a);N_GUARD::R1(H),XS(a)
        • Q(d);SBLOCK::R1(H)
        • S(a);N_GUARD::R1(H)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • B(E)
    • Vars
      • K(c);S_FLIGHT,XR(H)::QAB(A)
      • B(f);SBLOCK,XR(H)::S(F)
      • S(a);N_GUARD::R1(H),XS(a)
      • Q(d);SBLOCK::R1(H)
      • S(a);N_GUARD::R1(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).