MESON Chess Problem Database

Problem Display
PID: 227049 (6b1/3BK1p1/5n1q/3p1N1p/Q1N1n1kP/6P1/3prR2/b6R w - - 0 1)

Kummer, Konrad

Schweizer Arbeiter Schach, 1944

6b1/3BK1p1/5n1q/3p1N1p/Q1N1n1kP/6P1/3prR2/b6R

#2

9 + 11

15257 Kunstwerke auf 64 Feldern (1922-1966) (Ott, Kummer, Schudel) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Rxf4#
    • 1...Qg6
      • 2.Rf4#
    • 1...Qh7
      • 2.Rf4#
    • 1...Qh8
      • 2.Rf4#
    • 1...Be5
      • 2.Sxe5#
    • 1...Sxf2+
      • 2.Se5#
    • 1...Sc3+
      • 2.Sce3#
      • 2.Se5#
    • 1...Sxg3+
      • 2.Sce3#
      • 2.Se5#
      • 2.Sfe3#
    • 1...Sc5+
      • 2.Sce3#
      • 2.Se5#
    • 1...Sg5+
      • 2.Sce3#
      • 2.Se5#
    • 1...Sd6+
      • 2.Sce3#
      • 2.Se5#
    • 1...d4
      • 2.Se5#
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qxe2#
      • 1...Sc3+
        • 2.Se5#
      • 1...Sxg3+
        • 2.Sfe3#
      • 1...Sg5+
        • 2.Sce3#
      • 1...Qe3
        • 2.Scxe3#
      • 1...Qf4
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(i);N_GUARD::R1(B),XQ(i)
    • Q(i);N_GUARD::R1(B)
    • B(a);N_GUARD::S(E),XB(a)
    • S(d);CHECK,XR(B)::QAR(D)+S(E),DCHECK
    • P(f);S_CUTB(a)::S(E)
  • Actual
    • Q(D);P_PINR(c)
    • Threat
      • QAB(D),XR(c)
    • Vars
      • S(d);CHECK,S_CUTB(a)::S(E)
      • S(d);CHECK,SBLOCK,XP(C)::B(H)+S(G),DCHECK
      • S(d);CHECK,S_CUTQ(i)::S(E)
      • Q(i);N_GUARD::S(E),XQ(i)
      • Q(i);N_GUARD::R1(B),XQ(i)
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