MESON Chess Problem Database

Problem Display
PID: 263874 (2B5/K2N1p2/3p1P1Q/pRp1qkN1/r5p1/3P2P1/b4b2/5R1n w - - 0 1)

Kofman, Rafael Moiseevich

1st Comm., Tijdschrift vd NSB, 1929

2B5/K2N1p2/3p1P1Q/pRp1qkN1/r5p1/3P2P1/b4b2/5R1n

#2

10 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf6
      • 2.Qxf6#
    • 1...c4+
      • 2.Sb6#
  • Keys
    • 1.Se6!
      • threat
        • 2.Sg7#
      • 1...c4+
        • 2.Sd4#
      • 1...Kxe6
        • 2.Sb6#
      • 1...Qxf6
        • 2.Qxf6#
      • 1...Qxe6
        • 2.Qh5#
      • 1...Bxe6
        • 2.Qh5#
      • 1...fxe6
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(h);OGATE,P_SPINP(g),XP(F)::QAR1(G),XQ(h)
    • P(g);CHECK,P_SPINQ(h),S_CUTB(b)::B(J)+S(I)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • P(g);CHECK,N_GUARD,P_SPINQ(h),S_CUTR(d)::S(E)
      • K(i);N_SPINB(c),S_FLIGHT,XS(E)::B(J)+S(I)
      • Q(h);OGATE,P_SPINP(g),XP(F)::QAR1(G),XQ(h)
      • Q(h);P_SPINP(g),SBLOCK,XS(E)::QAR2(G)
      • B(b);SBLOCK,XS(E)::QAR2(G)
      • P(k);SBLOCK,XS(E)::QAR2(G)
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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).