MESON Chess Problem Database

Problem Display
PID: 139360 (3n2Q1/1pb2q2/1P1p3r/NPPk1p2/n1N4p/r1p2K1P/2P3R1/4R1BB w - - 0 1)

Szoghy, Jozsef

1st Comm., BCPS 031. Ty., 1937

3n2Q1/1pb2q2/1P1p3r/NPPk1p2/n1N4p/r1p2K1P/2P3R1/4R1BB

#2

13 + 12

56 The Problemist 1937

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Rd1#
    • 1...Re6
      • 2.Rd1#
    • 1...f4
      • 2.Rg5#
  • Tries
    • 1.Rg5?
      • threat
        • 2.Kf4#
        • 2.Rxf5#
      • 1...Sxc5
        • 2.Rxf5#
      • 1...Rh5
        • 2.Kf4#
      • 1...Re6
        • 2.Rd1#
      • 1...Rf6
        • 2.Kf4#
      • 1...Sc6
        • 2.Kf4#
      • 1...Se6
        • 2.Ke2#
      • 1...dxc5!
    • 1.Qxf7+?
      • 1...Re6
        • 2.Rd1#
      • 1...Se6
        • 2.Rd1#
        • 2.Qxf5#
      • 1...Sxf7!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Kf4#
      • 1...fxg4+
        • 2.Kxg4#
      • 1...Sxc5
        • 2.Rd4#
      • 1...dxc5
        • 2.Kf2#
      • 1...Re6
        • 2.Rd1#
      • 1...Se6
        • 2.Ke2#
      • 1...f4
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(k);::R(A)
    • R(h);N_SPINQ(k),SBLOCK::R(A)
    • P(f);OGATEB::R(E)
  • Tries
    • Try
      • R(E);P_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(K)::R(E),XP(f)
        • R(h);::B(C)+K(F)
        • R(h);N_SPINQ(k),SBLOCK::R(A)
        • S(l);::B(C)+K(F)
        • S(l);N_SPINQ(k),SBLOCK::B(C)+K(F)
      • Refutation
        • P(g);XP(K)
    • Try
      • Q(M);CHECK,XQ(k)
      • Vars
        • R(h);P_SPINR(h)::R(A)
      • Refutation
        • S(l);XQ(M)
  • Actual
    • R(E);
    • Threat
      • B(C)+K(F)
    • Vars
      • P(f);CHECK,XR(E)::B(C)+K(F),XP(f)
      • S(c);SBLOCK,XP(K)::R1(E)
      • P(g);SBLOCK,XP(K)::B(C)+K(F)
      • R(h);N_SPINQ(k),SBLOCK::R(A)
      • S(l);N_SPINQ(k),SBLOCK::B(C)+K(F)
      • P(f);OGATEB::R(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).