MESON Chess Problem Database

Problem Display
PID: 35827 (7K/p4p2/r3n2R/rQ2pk1B/3b1B2/3P1N2/4N3/4q3 w - - 0 1)

Pilchenko, Viacheslav Karlovich

3rd Prize, Tidskrift for Schack, 1994

7K/p4p2/r3n2R/rQ2pk1B/3b1B2/3P1N2/4N3/4q3

#2

8 + 9

3705 Album Russia (1992-1994) 2000
3681 FIDE Album (1992-1994) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Sh4#
    • 1...Qc3
      • 2.Sh4#
    • 1...Qb4
      • 2.Sh4#
    • 1...Qh4
      • 2.Sxh4#
    • 1...Qa1
      • 2.Sh4#
    • 1...Qb1
      • 2.Sh4#
    • 1...Qc1
      • 2.Sh4#
    • 1...Qd1
      • 2.Sh4#
    • 1...Qf1
      • 2.Sh4#
    • 1...Qg1
      • 2.Sh4#
    • 1...Sxf4
      • 2.Sexd4#
    • 1...Sg5
      • 2.Sfxd4#
    • 1...Sc7
      • 2.Sfxd4#
    • 1...Sg7
      • 2.Sfxd4#
    • 1...Sd8
      • 2.Sfxd4#
    • 1...Sf8
      • 2.Sfxd4#
  • Tries
    • 1.Bg5?
      • threat
        • 2.Rf6#
      • 1...Sxg5
        • 2.Sfxd4#
      • 1...Sf4
        • 2.Sexd4#
      • 1...Sc7
        • 2.Sexd4#
      • 1...Sg7
        • 2.Sexd4#
      • 1...Sd8
        • 2.Sexd4#
      • 1...Sf8
        • 2.Sexd4#
      • 1...f6
        • 2.Rxf6#
      • 1...Sc5!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qxf7#
      • 1...exf4+
        • 2.Sexd4#
      • 1...e4+
        • 2.Sfxd4#
      • 1...Qh4
        • 2.Sxh4#
      • 1...f6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 15
  • Sets
    • Q(a);N_GUARD::S(C)
    • Q(a);N_GUARD::S(C),XQ(a)
    • S(g);N_GUARD,SBLOCK,XB(D)::S(A),XB(b)
    • S(g);N_GUARD::S(C),XB(b)
  • Tries
    • Try
      • B(D);
      • Threat
        • R1(G)
      • Vars
        • S(g);N_GUARD,SBLOCK,XB(D)::S(C),XB(b)
        • S(g);N_GUARD::S(A),XB(b)
        • P(i);::R1(G),XP(i)
      • Refutation
        • S(g);N_SPINP(d)
  • Actual
    • Q(E);N_PINP(d),P_PINS(g)
    • Threat
      • QAR2(E),XP(i)
    • Vars
      • P(d);CHECK,N_GUARD,SBLOCK,XB(D)::S(A),XB(b)
      • P(d);CHECK,N_GUARD::S(C),XB(b)
      • Q(a);N_GUARD::S(C),XQ(a)
      • P(i);OGATE::QAB(E)
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