MESON Chess Problem Database

Problem Display
PID: 173094 (5N2/2Bnrp1b/2pR2pb/Q1p1k1p1/n3p2N/6P1/5p2/K4R1B w - - 0 1)

Barulin, Mikhail Mikhailovich

64 Shakhmatnoe obozrenie, 1941

5N2/2Bnrp1b/2pR2pb/Q1p1k1p1/n3p2N/6P1/5p2/K4R1B

#2

9 + 13

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Sxd7#
    • 1...Re8
      • 2.Sxd7#
    • 1...Sb2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sab6
      • 2.Qc3#
    • 1...Sf6
      • 2.Rd7#
    • 1...f6
      • 2.Rdd1#
      • 2.Rd2#
      • 2.Rd3#
      • 2.Rxd7#
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qxe4#
      • 1...fxe1Q+
        • 2.Rd1#
      • 1...fxe1R+
        • 2.Rd1#
      • 1...fxe1S
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rxd7#
      • 1...fxe1B
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rxd7#
      • 1...Re6
        • 2.Sxd7#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sf6
        • 2.Rd7#
      • 1...e3
        • 2.Qxe3#
      • 1...f5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(k);N_GUARD::S(I),XS(j)
    • S(b);N_GUARD::QAB(F)
    • S(b);N_GUARD::QAB(F),XS(b)
    • S(j);SBLOCK::B(H)+R(G)
  • Actual
    • Q(F);N_PINP(d),P_PINP(c)
    • Threat
      • QAR1(F),XP(c)
    • Vars
      • P(a);CHECK,N_SPINP(c),XQ(F)::B(H)+R(G)
      • R(k);N_GUARD::S(I),XS(j)
      • S(b);N_GUARD::QAB(F),XS(b)
      • S(j);SBLOCK::B(H)+R(G)
      • P(c);OGATEB::QAR2(F),XP(c)
      • P(l);SBLOCK::S(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).