MESON Chess Problem Database

Problem Display
PID: 93266 (1bR3Q1/1p1RpB2/n1r5/4P1K1/1p2N3/1N2p1P1/2k2P2/Bb2r2n w - - 0 1)

Kofman, Rafael Moiseevich

Skakbladet, 1930

1bR3Q1/1p1RpB2/n1r5/4P1K1/1p2N3/1N2p1P1/2k2P2/Bb2r2n

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...exf2
      • 2.Rd2#
    • 1...e2
      • 2.Rd2#
  • Tries
    • 1.Rxc6+?
      • 1...Sc5
        • 2.Rxc5#
      • 1...bxc6!
  • Keys
    • 1.Bg6!
      • threat
        • 2.Sf6#
      • 1...Sxf2
        • 2.Sxf2#
      • 1...Sxg3
        • 2.Sxg3#
      • 1...exf2
        • 2.Rd2#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Bd6
        • 2.Sc3#
      • 1...e6
        • 2.Sec5#
      • 1...Rd1
        • 2.Sed2#
      • 1...Sc5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD,XP(B)::R1(H)
    • P(e);N_GUARD::R1(H)
  • Tries
    • Try
      • R(J);CHECK,XR(h)
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::R(J),XS(g)
      • Refutation
        • P(i);XR(J)
  • Actual
    • B(I);
    • Threat
      • B(I)+S(E)
    • Vars
      • S(c);XP(B)::B(I)+S(E),XS(c)
      • S(c);XP(D)::B(I)+S(E),XS(c)
      • P(e);N_GUARD,XP(B)::R1(H)
      • R(h);N_GUARD::QAR2(K),XR(h)
      • B(k);::B(I)+S(E)
      • P(j);::B(I)+S(E)
      • R(b);SBLOCK::B(I)+S(E)
      • S(g);N_SPINR(h),S_CUTR(h)::QAR2(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).