MESON Chess Problem Database

Problem Display
PID: 63288 (3R3K/5ppp/B5q1/1NP4r/1R1NPQ2/2pk4/1p6/r7 w - - 0 1)

Lobusov, Andrey Jakovlevic

Schach-Echo, 1976

3R3K/5ppp/B5q1/1NP4r/1R1NPQ2/2pk4/1p6/r7

#2

9 + 9

3771 FIDE Album (1974-1976) 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Sa3#
    • 1...Qf5
      • 2.Sa3#
    • 1...Qg1
      • 2.Sa3#
    • 1...Qg2
      • 2.Sa3#
    • 1...Qg3
      • 2.Sa3#
    • 1...Qg4
      • 2.Sa3#
    • 1...Qg5
      • 2.Sa3#
    • 1...Rb1
      • 2.Sd6#
    • 1...Rc1
      • 2.Sd6#
    • 1...Rd1
      • 2.Sd6#
    • 1...Re1
      • 2.Sd6#
    • 1...Rf1
      • 2.Sd6#
    • 1...Rg1
      • 2.Sd6#
    • 1...Rah1
      • 2.Sd6#
    • 1...f6
      • 2.Sa3#
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qe2#
      • 1...Kxe4
        • 2.Sc6#
      • 1...Qxe4
        • 2.Sa3#
      • 1...Qg2
        • 2.Sf5#
      • 1...Qg4
        • 2.Sf5#
      • 1...Re1
        • 2.Sd6#
      • 1...Rh2
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • Q(f);N_GUARD,XP(C)::B(G)+S(E)
    • Q(f);N_GUARD::B(G)+S(E)
    • R(a);N_GUARD::B(G)+S(E)
    • P(g);S_CUTQ(f)::B(G)+S(E)
  • Actual
    • Q(D);
    • Threat
      • QAB1(D)
    • Vars
      • K(d);S_FLIGHT,XP(C)::R(A)+S(B)
      • Q(f);N_GUARD,SBLOCK,XP(C)::B(G)+S(E)
      • Q(f);N_GUARD::R(H)+S(B)
      • R(a);N_GUARD::B(G)+S(E)
      • R(e);N_GUARD::R(H)+S(B)
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