MESON Chess Problem Database

Problem Display
PID: 265374 (5N2/1q2p1n1/4B1p1/N3k1Pr/r3Pp1p/B1P4K/4Q3/5R2 w - - 0 1)

Kapustin, Fedor Mikhailovich

Kuligin, Nikolai Volodimirovich

Zadachi i Etyudi, 2010

5N2/1q2p1n1/4B1p1/N3k1Pr/r3Pp1p/B1P4K/4Q3/5R2

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Sc6#
    • 1...Qc6
      • 2.Sxc6#
    • 1...Qb1
      • 2.Sc6#
    • 1...Qb2
      • 2.Sc6#
    • 1...Qb3
      • 2.Sc6#
    • 1...Qa7
      • 2.Sc6#
    • 1...Qb8
      • 2.Sc6#
    • 1...Rxa3
      • 2.Sc4#
    • 1...Rc4
      • 2.Sxc4#
    • 1...Rxe4
      • 2.Sc4#
    • 1...Sxe6
      • 2.Sxg6#
  • Tries
    • 1.Qb5+?
      • 1...Kxe4
        • 2.Qe2#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Qxb5!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qxf4#
      • 1...Kxe4
        • 2.Qe2#
      • 1...Qxe4
        • 2.Sd7#
      • 1...Rxe4
        • 2.Sxg6#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...f3
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(g);N_GUARD,P_SPINQ(g),XP(F)::S(G)
    • Q(g);N_GUARD::S(G),XQ(g)
    • Q(g);N_GUARD::S(G)
    • Q(g);N_GUARD,P_PINP(D)::S(G)
    • R(a);N_GUARD,P_PINP(D),XB(C)::S(G)
    • R(a);N_GUARD::S(G),XR(a)
    • R(a);N_GUARD,P_SPINR(a),XP(F)::S(G)
    • S(i);SBLOCK,XB(I)::S(J),XP(f)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);OGATEB,P-FLIGHT,XP(F)::QAR2(B)
        • Q(g);N_GUARD,P_SPINQ(g)::QAR1(B),XQ(g)
      • Refutation
        • Q(g);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XP(b)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINP(b),XP(F)::QAR2(B)
      • Q(g);N_GUARD,SBLOCK,XP(F)::S(J)
      • R(a);SBLOCK,XP(F)::S(J),XP(f)
      • S(i);OGATE,XB(I)::QAR1(B),XS(i)
      • P(b);::S(J),XP(f)
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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).