MESON Chess Problem Database

Problem Display
PID: 6918 (3N1R2/b2R4/Q2NPP2/3nk2r/1B1pn2p/KB2P1p1/P2p1p2/2r5 w - - 0 1)

Barulin, Mikhail Mikhailovich

3rd Prize, The Puzzler, 1934

3N1R2/b2R4/Q2NPP2/3nk2r/1B1pn2p/KB2P1p1/P2p1p2/2r5

#2

12 + 11

14752 Soviet Chess Compositions (1945-1947) 1947
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Sc6#
    • 1...Sxf6
      • 2.S8f7#
  • Tries
    • 1.Sc6+?
      • 1...Kxe6
        • 2.Re7#
      • 1...Rxc6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qxe4#
      • 1...Sxd6
        • 2.Bxd6#
      • 1...Sexf6
        • 2.S6f7#
      • 1...Sdxf6
        • 2.S8f7#
      • 1...Sec3
        • 2.Sc4#
      • 1...Sc5
        • 2.Qxd4#
      • 1...Sg5
        • 2.Qf5#
      • 1...Sdc3
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(h);S_CUTR(a)::S(K)
    • S(h);SBLOCK,XP(I)::S(K)
  • Tries
    • Try
      • S(K);CHECK
      • Vars
        • K(i);P-FLIGHT,P_SPINS(h),XP(H)::R1(J)
      • Refutation
        • R(a);XS(K)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F),XS(f)
    • Vars
      • S(f);OGATE,XS(G)::B(E),XS(f)
      • S(f);SBLOCK,XP(I)::S(G)
      • S(h);SBLOCK,XP(I)::S(K)
      • S(f);S_CUTR(a)::S(G)
      • S(f);S_CUTB(k)::QAB1(F),XP(e)
      • S(f);OGATE::QAR1(F)
      • S(h);S_CUTR(a)::S(K)
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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).