MESON Chess Problem Database

Problem Display
PID: 48413 (1b2K3/qQ3pRB/3BPk1P/2Np3p/n7/3nN2r/8/6rb w - - 0 1)

Bogdanov, Evgeny Mikhailovich

1st Prize, Rjazansky komsomolets, 1982

1b2K3/qQ3pRB/3BPk1P/2Np3p/n7/3nN2r/8/6rb

#2

9 + 11

3752 FIDE Album (1980-1982) 1988
273 Mat Plus 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Qe7#
      • 2.Qxf7#
    • 1...Qb6
      • 2.Qe7#
      • 2.Qxf7#
    • 1...Qa5
      • 2.Qe7#
      • 2.Qxf7#
    • 1...Qa6
      • 2.Qe7#
      • 2.Qxf7#
    • 1...Qa8
      • 2.Qe7#
      • 2.Qxf7#
    • 1...Rg2
      • 2.Sxd5#
    • 1...Rg5
      • 2.Rxf7#
    • 1...Rf3
      • 2.Sxd5#
    • 1...Se5
      • 2.Be7#
    • 1...fxe6
      • 2.Sd7#
  • Keys
    • 1.Qxd5!
      • threat
        • 2.Qf5#
      • 1...Qd7+
        • 2.Sxd7#
      • 1...Qe7+
        • 2.Bxe7#
      • 1...Qxc5
        • 2.Rxf7#
      • 1...Bxd5
        • 2.Sxd5#
      • 1...fxe6
        • 2.Qxe6#
      • 1...Rf1
        • 2.Qg5#
      • 1...Rg5
        • 2.Qxg5#
      • 1...Rf3
        • 2.Se4#
      • 1...Be4
        • 2.Sxe4#
      • 1...Se5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(a);S_CUTB(b)::S(A),XP(f)
    • R(a);SBLOCK::R1(G),XP(j)
    • R(d);S_CUTB(b)::S(A),XP(f)
    • S(c);SBLOCK::B(C)
    • P(j);SBLOCK,XP(D)::S(B)
  • Actual
    • Q(F);XP(f)
    • Threat
      • QAR1(F)
    • Vars
      • Q(i);CHECK,N_GUARD::S(B),XQ(i)
      • Q(i);CHECK,N_GUARD::B(C),XQ(i)
      • Q(i);N_GUARD,XS(B)::R1(G),XP(j)
      • B(b);XQ(F)::S(A),XB(b)
      • P(j);OGATE,XP(D)::QAR1(F),XP(j)
      • R(a);N_GUARD::QAB1(F)
      • R(a);N_GUARD::QAB1(F),XR(a)
      • R(d);S_CUTB(b)::S(B)
      • B(b);N_GUARD::S(B),XB(b)
      • S(c);N_GUARD::QAB1(F),XS(c)
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