MESON Chess Problem Database

Problem Display
PID: 226929 (2R2Q2/rP2N3/4K3/pB1P4/1k4NR/1pq5/PP1r4/2bnB3 w - - 0 1)

Stocking, FE

Sunday Chronicle, 1946

(First published on Sun Mar 31 1946)

2R2Q2/rP2N3/4K3/pB1P4/1k4NR/1pq5/PP1r4/2bnB3

#2

12 + 8

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5+?
      • 1...Qc5
        • 2.Qxc5#
      • 1...Kxb5!
    • 1.Sg6+?
      • 1...Qc5
        • 2.Qxc5#
      • 1...Kxb5!
    • 1.Sg8+?
      • 1...Qc5
        • 2.Qxc5#
      • 1...Kxb5!
  • Keys
    • 1.a4!
      • threat
        • 2.Sc6#
      • 1...Qe5+
        • 2.Sxe5#
      • 1...Qf6+
        • 2.Sxf6#
      • 1...Qe3+
        • 2.Sxe3#
      • 1...Qc6+
        • 2.Sxc6#
      • 1...Qxc8+
        • 2.Sxc8#
      • 1...Re2+
        • 2.Se3#
      • 1...Qxb2
        • 2.Sf5#
        • 2.Sg6#
        • 2.Sg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e),P_SPINR(c)::QAB1(L),XQ(e)
      • Refutation
        • K(f);P-FLIGHT,XB(F)
    • Try
      • S(J);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e),P_SPINR(c)::QAB1(L),XQ(e)
      • Refutation
        • K(f);P-FLIGHT,XB(F)
    • Try
      • S(J);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e),P_SPINR(c)::QAB1(L),XQ(e)
      • Refutation
        • K(f);P-FLIGHT,XB(F)
  • Actual
    • P(B);
    • Threat
      • QAB(L)+S(J),DCHECK
    • Vars
      • Q(e);CHECK,N_GUARD,P_SPINR(c)::R(E)+S(D),XQ(e)
      • Q(e);CHECK,P_SPINR(c)::QAB(L)+S(J),DCHECK,XQ(e)
      • Q(e);CHECK,P_SPINR(c),XR(K)::QAB(L)+S(J),XQ(e)
      • R(c);CHECK,N_GUARD,P_SPINQ(e)::R(E)+S(D)
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