MESON Chess Problem Database

Problem Display
PID: 141165 (4B2q/4P3/p3p3/P2p4/N1k2N1P/7R/b2Q3K/8 w - - 0 1)

Helfman, Hyman

Cincinnati Enquirer, 1931

(First published on Sat Mar 7 1931)

4B2q/4P3/p3p3/P2p4/N1k2N1P/7R/b2Q3K/8

#2

9 + 6

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Qxc3#
    • 1...Qxh4
      • 2.Qc3#
    • 1...Qh5
      • 2.Qc3#
    • 1...Qh6
      • 2.Qc3#
    • 1...Qh7
      • 2.Qc3#
    • 1...Qf8
      • 2.Qc3#
    • 1...Qg8
      • 2.Qc3#
    • 1...e5
      • 2.Qc3#
  • Tries
    • 1.Rc3+?
      • 1...Qxc3
        • 2.Qxc3#
      • 1...Kb4!
    • 1.Qc1+?
      • 1...Kb4
        • 2.Qc5#
      • 1...Qc3
        • 2.Qxc3#
      • 1...Kd4!
    • 1.Qc2+?
      • 1...Kb4
        • 2.Qc5#
      • 1...Qc3
        • 2.Qxc3#
      • 1...Kd4!
    • 1.Qe2+?
      • 1...Kd4
        • 2.Sxe6#
      • 1...Kb4!
    • 1.Qxd5+?
      • 1...Kb4
        • 2.Qc5#
      • 1...exd5!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qb4#
      • 1...Qe5+
        • 2.Sxe5#
      • 1...Kb3
        • 2.Se5#
      • 1...Kd4
        • 2.Qf4#
      • 1...Qb2
        • 2.Sdxb2#
      • 1...Qc3
        • 2.Qxc3#
      • 1...d4
        • 2.Qxa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • Q(f);N_GUARD::QAR1(A),XQ(f)
    • Q(f);N_GUARD,P_PINR(C),XP(F)::QAR1(A)
    • Q(f);N_GUARD::QAR1(A)
    • P(e);S_CUTQ(f)::QAR1(A)
  • Tries
    • Try
      • R(C);CHECK,P_SPINP(F)
      • Vars
        • Q(f);N_PINP(F),OGATE,XR(C)::QAR1(A),XQ(f)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
        • Q(f);N_GUARD,P_SPINQ(f)::QAR1(A),XQ(f)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
        • Q(f);N_GUARD,P_SPINQ(f)::QAR1(A),XQ(f)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::S(E),XP(e)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • P(e);XQ(A)
  • Actual
    • S(E);
    • Threat
      • QAR1(A)
    • Vars
      • Q(f);CHECK,N_GUARD::S(E),XQ(f)
      • K(b);S_FLIGHT::R(C)+S(E)
      • K(b);P-FLIGHT::QAR2(A)
      • Q(f);N_GUARD,P_PINQ(A)::S(E),XQ(f)
      • Q(f);N_GUARD::QAR1(A),XQ(f)
      • P(c);SBLOCK::QAB(A),XB(a)
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