MESON Chess Problem Database

Problem Display
PID: 48054 (Q2b2q1/1R6/K1n1P3/4P2r/2Ppk3/4PR1p/2P1N2B/2nr3B w - - 0 1)

Gross, Erwin

Maleika, Gerhard

1st HM., Chess Life, 1988

Q2b2q1/1R6/K1n1P3/4P2r/2Ppk3/4PR1p/2P1N2B/2nr3B

#2

12 + 9

3297 FIDE Album (1986-1988) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4+
      • 2.Rxb4#
    • 1...Sa7
      • 2.Rxa7#
    • 1...Se7
      • 2.Rxe7#
    • 1...Sb8+
      • 2.Rxb8#
    • 1...d3
      • 2.Sc3#
  • Tries
    • 1.Rb3?
      • threat
        • 2.Qxc6#
      • 1...Qxe6
        • 2.Rf1#
      • 1...Rxe5
        • 2.Rf4#
      • 1...dxe3
        • 2.Rbxe3#
      • 1...Qe8
        • 2.Rf1#
      • 1...Qg3!
    • 1.Rg7?
      • threat
        • 2.Qxc6#
      • 1...Rxe5
        • 2.Sg3#
      • 1...dxe3
        • 2.Rf1#
      • 1...Qe8
        • 2.Rg4#
      • 1...Qxe6!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Qxc6#
      • 1...Qxe6
        • 2.Sg3#
      • 1...Rxe5
        • 2.Rxe5#
      • 1...dxe3
        • 2.Rf4#
      • 1...Qe8
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • S(g);CHECK,OGATEB::QAB(L)+R(K),XS(g)
    • S(g);OGATEB::QAB(L)+R(K),XS(g)
    • P(d);N_GUARD::S(C)
  • Tries
    • Try
      • R(K);P_PINS(g)
      • Threat
        • QAB(L),XS(g)
      • Vars
        • Q(i);N_GUARD,XP(J)::B(A)+R(F)
        • R(f);SBLOCK,XP(H)::B(A)+R(F),DCHECK
        • P(d);OGATE,XP(E)::R1(K),XP(d)
        • Q(i);N_GUARD::B(A)+R(F)
      • Refutation
        • Q(i);
    • Try
      • R(K);P_PINS(g)
      • Threat
        • QAB(L),XS(g)
      • Vars
        • R(f);SBLOCK,XP(H)::S(C)
        • P(d);SBLOCK,XP(E)::B(A)+R(F)
        • Q(i);N_GUARD::R(K)
      • Refutation
        • Q(i);XP(J)
  • Actual
    • R(K);P_PINS(g)
    • Threat
      • QAB(L),XS(g)
    • Vars
      • Q(i);N_GUARD,XP(J)::S(C)
      • R(f);OGATE,XP(H)::R1(K),XR(f)
      • P(d);SBLOCK,XP(E)::B(A)+R(F),DCHECK
      • Q(i);N_GUARD::S(C)
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