MESON Chess Problem Database

Problem Display
PID: 272156 (6K1/8/1N2n3/5p1B/2RPk3/Q4Rp1/5bPN/q2r2n1 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Mosiashvili-75 JT (Kudesnik), 2023

6K1/8/1N2n3/5p1B/2RPk3/Q4Rp1/5bPN/q2r2n1

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Qa8#
    • 1...Qc3
      • 2.Qa8#
    • 1...Qb1
      • 2.Qa8#
    • 1...Qc1
      • 2.Qa8#
    • 1...Rb1
      • 2.Qd3#
    • 1...Rc1
      • 2.Qd3#
    • 1...Re1
      • 2.Qd3#
    • 1...Rf1
      • 2.Qd3#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Be1
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
    • 1...Bxd4
      • 2.Qe3#
    • 1...Sxf3
      • 2.Qxf3#
    • 1...Sxd4
      • 2.Qe7#
    • 1...f4
      • 2.Bg6#
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sf6#
      • 1...Qxd4
        • 2.Qa8#
      • 1...Rxd4
        • 2.Qd3#
      • 1...Bxd4
        • 2.Qe3#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Sxd4
        • 2.Qe7#
      • 1...fxg4
        • 2.Bg6#
      • 1...f4
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • Q(a);N_GUARD::QAB(C)
    • R(b);N_GUARD::QAB1(C)
    • R(b);N_GUARD::QAB1(C),XR(b)
    • B(d);N_GUARD::QAR1(C)
    • B(d);N_GUARD::QAR1(C),XB(d)
    • B(d);N_GUARD,P_SPINB(d),XP(F)::QAR1(C)
    • S(c);OGATE,XR(D)::QAB1(C),XS(c)
    • S(h);OGATEB,P_SPINS(h),XP(F)::QAR(C)
    • P(g);OGATEB::B(G)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • Q(a);N_GUARD,P_SPINQ(a),XP(F)::QAB(C)
      • R(b);N_GUARD,P_SPINR(b),XP(F)::QAB1(C)
      • B(d);N_GUARD,P_SPINB(d),XP(F)::QAR1(C)
      • S(c);OGATE,XR(D)::QAB1(C),XS(c)
      • S(h);OGATEB,P_SPINS(h),XP(F)::QAR(C)
      • P(g);OGATEB,XS(B)::B(G)
      • P(g);OGATEB::B(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).