MESON Chess Problem Database

Problem Display
PID: 243871 (1K6/2R1Prn1/1p1kPpP1/8/5N2/3P3P/bq5B/3RQ2B w - - 0 1)

Fleck, Ferenc

Tijdschrift vd KNSB, 1932

1K6/2R1Prn1/1p1kPpP1/8/5N2/3P3P/bq5B/3RQ2B

#2

12 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Sd5#
      • 2.Sh5#
    • 1...Qb1
      • 2.Sd5#
      • 2.Sh5#
    • 1...Qb3
      • 2.Sd5#
      • 2.Sh5#
    • 1...Qb5
      • 2.Sd5#
    • 1...Rxe7
      • 2.Rc6#
    • 1...Rf8+
      • 2.exf8Q#
      • 2.exf8B#
    • 1...Sf5
      • 2.e8S#
    • 1...Sh5
      • 2.e8S#
    • 1...Sxe6
      • 2.e8S#
  • Tries
    • 1.Se2+?
      • 1...Kxe6
        • 2.Sd4#
      • 1...Qe5!
    • 1.Sg2+?
      • 1...Kd5
        • 2.Qe4#
      • 1...Qe5!
  • Keys
    • 1.d4!
      • threat
        • 2.Rd7#
      • 1...Rf8+
        • 2.exf8Q#
        • 2.exf8B#
      • 1...Qxd4
        • 2.Sh5#
      • 1...Rxe7
        • 2.Rc6#
      • 1...Bxe6
        • 2.Se2#
      • 1...Sxe6
        • 2.e8S#
      • 1...Qg2
        • 2.Qb4#
      • 1...Qb5
        • 2.Sd5#
      • 1...Bd5
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_GUARD::B(D)+S(G)
    • R(f);SBLOCK,XP(K)::R1(J)
    • R(f);CHECK,OGATE::PXR(f)=Q
    • S(g);N_GUARD::P=S
    • S(g);N_GUARD,XP(H)::P=S
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(H)::QAR(B)+S(G),DCHECK
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • S(G);CHECK
      • Vars
        • K(d);P-FLIGHT::QAB1(B)
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • P(E);
    • Threat
      • R1(J)
    • Vars
      • R(f);CHECK,OGATE::PXR(f)=Q
      • Q(b);N_GUARD,P_SPINQ(b),XP(E)::B(D)+S(G)
      • R(f);SBLOCK,XP(K)::R1(J)
      • B(a);SBLOCK,XP(H)::B(D)+S(G)
      • S(g);N_GUARD,XP(H)::P=S
      • Q(b);N_GUARD::QAB(B)
      • Q(b);N_GUARD::B(D)+S(G)
      • B(a);SBLOCK::B(D)+S(G)
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