MESON Chess Problem Database

Problem Display
PID: 253037 (BB5q/4n2b/5r2/3R4/4k3/n4NP1/Qr2NKP1/b7 w - - 0 1)

Fuhrer, Viktor

4th Prize, Wiener Schachzeitung, 1937

BB5q/4n2b/5r2/3R4/4k3/n4NP1/Qr2NKP1/b7

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2+
      • 2.Qxe2#
    • 1...Rxf3+
      • 2.gxf3#
    • 1...Rf5
      • 2.Rd4#
    • 1...Ra6
      • 2.Sg5#
    • 1...Rb6
      • 2.Sg5#
    • 1...Rc6
      • 2.Sg5#
    • 1...Rd6
      • 2.Sg5#
    • 1...Re6
      • 2.Sg5#
    • 1...Rh6
      • 2.Sg5#
    • 1...Bf5
      • 2.Sg5#
      • 2.Rd4#
    • 1...Sb1
      • 2.Qc4#
    • 1...Sc2
      • 2.Sc3#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sxd5
      • 2.Qxd5#
    • 1...Sf5
      • 2.Sg5#
      • 2.Rd4#
  • Keys
    • 1.g4!
      • threat
        • 2.Rd4#
      • 1...Rxe2+
        • 2.Qxe2#
      • 1...Rxf3+
        • 2.gxf3#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Rb7
        • 2.Sg3#
      • 1...Rc6
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • R(b);CHECK,OGATE,P_PINS(E),XS(B)::QAR2(A),XR(b)
    • R(e);CHECK,OGATE,XS(E)::P(D),XR(e)
    • R(e);SBLOCK::B(H)+R(G),DCHECK
    • R(e);::S(E)
    • S(c);N_GUARD::QAR2(A)
    • S(c);N_PINS(B),P_PINS(E)::S(B)
    • S(c);N_GUARD::QAR2(A),XS(c)
    • S(f);OGATE,P_SPINS(f),XR(G)::QAB1(A),XS(f)
  • Actual
    • P(F);
    • Threat
      • B(H)+R(G),DCHECK
    • Vars
      • R(b);CHECK,OGATE,P_PINS(E),XS(B)::QAR2(A),XR(b)
      • R(e);CHECK,OGATE,XS(E)::P(D),XR(e)
      • S(f);OGATE,P_SPINS(f),XR(G)::QAB1(A),XS(f)
      • R(b);N_PINS(B),P_PINS(E)::S(B)
      • R(e);::S(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).