MESON Chess Problem Database

Problem Display
PID: 249729 (4R2B/8/5bN1/R2b1k1K/1p2p1np/1q3n2/4NQ2/6rB w - - 0 1)

Mirri, Giorgio

3rd Prize, Jerusalem Post, 1953

4R2B/8/5bN1/R2b1k1K/1p2p1np/1q3n2/4NQ2/6rB

#2

8 + 10

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Sxh4#
    • 1...Bb2
      • 2.Sxh4#
    • 1...Bc3
      • 2.Sxh4#
    • 1...Bd4
      • 2.Sxd4#
      • 2.Sxh4#
    • 1...Be5
      • 2.Sxh4#
    • 1...Bg5
      • 2.Sd4#
    • 1...Be7
      • 2.Sd4#
    • 1...Bd8
      • 2.Sd4#
    • 1...Se5
      • 2.Sd4#
    • 1...e3
      • 2.Qxf3#
  • Tries
    • 1.Rxd5+?
      • 1...Be5
        • 2.Sd4#
        • 2.Sxh4#
      • 1...Se5
        • 2.Sd4#
      • 1...Qxd5!
    • 1.Re5+?
      • 1...Sxe5
        • 2.Sd4#
      • 1...Bxe5!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qe6#
      • 1...Be5
        • 2.Se7#
      • 1...Be7
        • 2.Sxe7#
      • 1...Sd4
        • 2.Bxe4#
      • 1...Sfe5
        • 2.Sd4#
      • 1...Sg5
        • 2.Sxh4#
      • 1...Sge5
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(j);N_GUARD::S(F),XP(g)
    • B(j);N_GUARD,N_SPINB(h)::S(F),XP(g)
    • B(j);N_GUARD::S(B)
    • S(f);N_SPINB(h),S_CUTB(j)::S(B)
    • P(e);N_GUARD,S_CUTQ(b)::QAR2(C),XS(c)
  • Tries
    • Try
      • R(D);CHECK,XB(h)
      • Vars
        • S(f);::S(B)
      • Refutation
        • Q(b);XR(D)
    • Try
      • R(G);CHECK,N_PINB(h)
      • Vars
        • S(f);XR(G)::S(B)
      • Refutation
        • B(j);XR(G)
  • Actual
    • Q(C);N_PINS(c)
    • Threat
      • QAB1(C)
    • Vars
      • B(j);N_GUARD,N_SPINB(h)::S(F)
      • B(j);N_GUARD::S(F),XB(j)
      • S(c);OGATE::B(A),XP(e)
      • S(c);N_GUARD,N_SPINB(h),S_CUTB(j)::S(B)
      • S(c);N_GUARD,S_CUTB(j)::S(F),XP(g)
      • S(f);N_GUARD,N_SPINB(h)::QAR1(C),XB(j)
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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).