MESON Chess Problem Database

Problem Display
PID: 84982 (K6Q/4p3/1BBnpn1N/b3k1Pp/2r1P2r/2P3P1/4RP2/1q2N2b w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Telescacco 92, 1998

K6Q/4p3/1BBnpn1N/b3k1Pp/2r1P2r/2P3P1/4RP2/1q2N2b

#2

12 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Sd3#
    • 1...Qd3
      • 2.Sxd3#
    • 1...Qxe4
      • 2.Sd3#
    • 1...Qa1
      • 2.Sd3#
    • 1...Qc1
      • 2.Sd3#
    • 1...Qb2
      • 2.Sd3#
    • 1...Qb3
      • 2.Sd3#
    • 1...Qb4
      • 2.Sd3#
    • 1...Qb5
      • 2.Sd3#
    • 1...Qxb6
      • 2.Sd3#
    • 1...Rd4
      • 2.Bxd4#
      • 2.cxd4#
    • 1...Rcxe4
      • 2.Bd4#
    • 1...Rxc6
      • 2.Bd4#
    • 1...Rh2
      • 2.f4#
    • 1...Rh3
      • 2.f4#
    • 1...Rhxe4
      • 2.f4#
    • 1...Bf3
      • 2.Sxf3#
    • 1...Bxe4
      • 2.Sf3#
    • 1...Sxe4
      • 2.Qb8#
    • 1...Sb5
      • 2.Sf7#
    • 1...Sf5
      • 2.Sf7#
    • 1...Sb7
      • 2.Sf7#
    • 1...Sf7
      • 2.Sxf7#
    • 1...Sc8
      • 2.Sf7#
    • 1...Se8
      • 2.Sf7#
  • Keys
    • 1.Qb8!
      • threat
        • 2.Sf7#
      • 1...Qxe4
        • 2.Sd3#
      • 1...Rcxe4
        • 2.Bd4#
      • 1...Rhxe4
        • 2.f4#
      • 1...Bxe4
        • 2.Sf3#
      • 1...Sxe4
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 20
  • Sets
    • Q(a);N_GUARD::S(A)
    • Q(a);N_GUARD::S(A),XQ(a)
    • Q(a);N_GUARD,P_PINB(I),P_SPINQ(a),XP(F)::S(A)
    • Q(a);N_GUARD,XB(H)::S(A)
    • R(c);N_GUARD,P_SPINR(c),XP(F)::B(H)
    • R(c);N_GUARD,XB(I)::B(H)
    • R(d);N_GUARD::P(C)
    • R(d);N_GUARD,P_SPINR(d),XP(F)::P(C)
    • B(b);N_GUARD::S(A),XB(b)
    • B(b);N_GUARD,P_PINB(I),P_SPINB(b),XP(F)::S(A)
    • S(h);N_SPINS(j),OGATEB,P_SPINS(h),XP(F)::QAB(L)
    • S(h);N_GUARD::S(J)
    • S(h);N_GUARD::S(J),XS(h)
  • Actual
    • Q(L);N_PINS(j),P_PINS(h)
    • Threat
      • S(J)
    • Vars
      • Q(a);N_GUARD,P_PINB(I),P_SPINQ(a),XP(F)::S(A)
      • R(c);N_GUARD,P_SPINR(c),XP(F)::B(H)
      • R(d);N_GUARD,P_SPINR(d),XP(F)::P(C)
      • B(b);N_GUARD,P_PINB(I),P_SPINB(b),XP(F)::S(A)
      • S(j);N_SPINS(h),OGATEB,P_SPINS(j),XP(F)::QAB(L)
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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).