MESON Chess Problem Database

Problem Display
PID: 274344 (1N2N3/5RB1/4k1P1/R2nppK1/2n2P2/1B4P1/q1p5/3rrQb1 w - - 0 1)

Hochberger, Adolf

Zilahi, Zoltan

Prize, Schackvarlden, 1931

1N2N3/5RB1/4k1P1/R2nppK1/2n2P2/1B4P1/q1p5/3rrQb1

#2

11 + 10

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Sce3
      • 2.Qa6#
    • 1...Sd6
      • 2.Sc7#
    • 1...Sde3
      • 2.Rxe5#
    • 1...Se7
      • 2.Rf6#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Sf8#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Qa3!
    • 1.Sc7+?
      • 1...Kd6
        • 2.Rd7#
      • 1...Sxc7!
    • 1.Bf8?
      • threat
        • 2.Sg7#
      • 1...Se7
        • 2.Rf6#
        • 2.Rxe7#
      • 1...exf4!
    • 1.Qh3?
      • threat
        • 2.Qxf5#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sde3
        • 2.Rxe5#
      • 1...Se7
        • 2.Rf6#
      • 1...Sce3!
  • Keys
    • 1.g4!
      • threat
        • 2.gxf5#
      • 1...fxg4
        • 2.f5#
      • 1...Sce3
        • 2.Qa6#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sde3
        • 2.Rxe5#
      • 1...Se7
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(f);OGATE,P_SPINS(g)::QAR(A)
    • S(f);P_SPINS(g),SBLOCK::S(K)
    • S(g);OGATE,P_SPINS(f)::R1(E),XP(h)
    • S(g);N_GUARD,P_SPINS(f),SBLOCK::R1(H)
  • Tries
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • B(c);N_GUARD::S(J),XB(c)
      • Refutation
        • Q(d);
    • Try
      • S(K);CHECK
      • Vars
        • K(j);P-FLIGHT,S_CUTS(g)::R1(H)
      • Refutation
        • S(g);P_SPINS(f),XS(K)
    • Try
      • B(I);
      • Threat
        • S(K)
      • Refutation
        • P(h);XP(D)
    • Try
      • Q(A);P_PINP(i)
      • Threat
        • QAB1(A),XP(i)
      • Vars
        • S(f);P_SPINS(g),SBLOCK::S(K)
        • S(g);OGATE,P_SPINS(f)::R1(E),XP(h)
        • S(g);N_GUARD,P_SPINS(f),SBLOCK::R1(H)
      • Refutation
        • S(f);P_SPINS(g)
  • Actual
    • P(C);
    • Threat
      • P(C),XP(i)
    • Vars
      • P(i);OGATE,XP(C)::P(D)
      • S(f);OGATE,P_SPINS(g)::QAR(A)
      • S(f);P_SPINS(g),SBLOCK::S(K)
      • S(g);OGATE,P_SPINS(f)::R1(E),XP(h)
      • S(g);N_GUARD,P_SPINS(f),SBLOCK::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).