MESON Chess Problem Database

Problem Display
PID: 229034 (4r2b/2n2p2/3p4/1R5p/3k2pR/Q5N1/B3prN1/Kb1n2B1 w - - 0 1)

Simkhovich, Froim Markovich

1st Prize, 64 Shakhmatnoe obozrenie, 1926

4r2b/2n2p2/3p4/1R5p/3k2pR/Q5N1/B3prN1/Kb1n2B1

#2

8 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sf5#
    • 1...Be4
      • 2.Sxe2#
    • 1...Sd5
      • 2.Rxd5#
    • 1...Sa6
      • 2.Rd5#
    • 1...Se6
      • 2.Rd5#
    • 1...Sa8
      • 2.Rd5#
  • Tries
    • 1.Rxg4+?
      • 1...Re4
        • 2.Sxe2#
        • 2.Sf5#
      • 1...Be4
        • 2.Sxe2#
        • 2.Sf5#
      • 1...hxg4!
  • Keys
    • 1.Se1!
      • threat
        • 2.Sf3#
      • 1...Bxa2
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sc3
        • 2.Qa7#
      • 1...Re3
        • 2.Qb4#
      • 1...Re4
        • 2.Sf5#
      • 1...Be4
        • 2.Sxe2#
      • 1...Se3
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(k);N_SPINP(f),SBLOCK,S_CUTB(a)::S(F)
    • B(a);N_SPINP(f),SBLOCK,S_CUTR(k)::S(F),XP(c)
    • S(i);N_GUARD::R1(H),XS(i)
    • S(i);N_GUARD::R1(H)
  • Tries
    • Try
      • R(G);CHECK,XP(f)
      • Refutation
        • P(g);XR(G)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • B(a);N_GUARD,XB(C)::QAR1(E)
      • B(a);N_GUARD::QAR1(E),XB(a)
      • S(b);SBLOCK::QAB(E)
      • R(k);N_SPINR(d),SBLOCK::QAR2(E)
      • R(k);N_SPINP(f),SBLOCK,S_CUTB(a)::S(F)
      • B(a);N_SPINP(f),SBLOCK,S_CUTR(k)::S(F),XP(c)
      • S(b);N_GUARD,N_SPINR(d),SBLOCK::QAB(E)
HTML5 logo

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).