MESON Chess Problem Database

Problem Display
PID: 47710 (1n1QKN2/2p1n1p1/2P3p1/4k3/r2p2pP/3p1RN1/3b1P2/2B4B w - - 0 1)

Pilchenko, Viacheslav Karlovich

3rd HM., Boyer MT, 1988

1n1QKN2/2p1n1p1/2P3p1/4k3/r2p2pP/3p1RN1/3b1P2/2B4B

#2

10 + 11

3297 FIDE Album (1986-1988) 1995

SOLUTION

  • SOUND
  • Tries
    • 1.Rf4?
      • threat
        • 2.Qxc7#
      • 1...Kxf4
        • 2.Qxc7#
      • 1...Bxf4
        • 2.Qxe7#
      • 1...Ra7
        • 2.Qxd4#
      • 1...Bb4
        • 2.Qxd4#
      • 1...Ba5
        • 2.Qxe7#
      • 1...Sd5
        • 2.Re4#
      • 1...Sf5
        • 2.Re4#
      • 1...Sc8
        • 2.Re4#
      • 1...Sa6!
    • 1.Rf7?
      • threat
        • 2.Qxc7#
        • 2.Qxe7#
      • 1...Sexc6
        • 2.Qxc7#
        • 2.Qd5#
      • 1...Sbxc6
        • 2.Qxc7#
      • 1...Ra7
        • 2.Qxe7#
      • 1...Bb4
        • 2.Bf4#
      • 1...Ba5
        • 2.Bf4#
        • 2.Qxe7#
      • 1...Bg5
        • 2.Qxc7#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc8
        • 2.Qd5#
      • 1...Sg8
        • 2.Qxc7#
        • 2.Qd5#
      • 1...Sa6
        • 2.Qxe7#
      • 1...Sf5!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Qxe7#
      • 1...Kxf6
        • 2.Qxe7#
      • 1...Sexc6
        • 2.Sxg6#
      • 1...Sbxc6
        • 2.Sd7#
      • 1...gxf6
        • 2.Qxc7#
      • 1...Bb4
        • 2.Re6#
      • 1...Sd5
        • 2.Sxg6#
      • 1...Sf5
        • 2.Sxg6#
      • 1...Sc8
        • 2.Sxg6#
      • 1...Sg8
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Threat
        • QAB(H),XP(h)
      • Vars
        • K(f);P_SPINB(a),S_FLIGHT,XR(D)::QAB(H),XP(h)
        • B(a);XR(D)::QAR2(H),XS(i)
        • R(c);N_GUARD::QAB1(H),XP(d)
        • B(a);S_CUTR(c)::QAB1(H),XP(d)
        • B(a);::QAR2(H),XS(i)
        • S(i);::R1(D)
      • Refutation
        • S(k);
    • Try
      • R(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(k);XP(G)::QAB(H),XP(h)
        • R(c);::QAR2(H),XS(i)
        • B(a);OGATE::B(A)
        • B(a);::QAB(H),XP(h)
        • S(i);N_GUARD::QAR1(H),XS(i)
        • S(i);N_GUARD::QAR1(H)
        • S(k);::QAR2(H),XS(i)
      • Refutation
        • S(i);
  • Actual
    • R(D);
    • Threat
      • QAR2(H),XS(i)
    • Vars
      • K(f);P_SPINS(i),S_FLIGHT,XR(D)::QAB1(H),XS(i)
      • S(i);N_GUARD,XP(G)::S(J),XP(g)
      • S(k);N_GUARD,XP(G)::S(J)
      • P(j);SBLOCK,XR(D)::QAB(H),XP(h)
      • B(a);::R1(D)
      • S(i);N_GUARD::S(J),XP(g)
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).