MESON Chess Problem Database

Problem Display
PID: 271467 (B7/4K2b/2N5/2p1P3/P1k5/2q3Qn/P3P3/1nR1N3 w - - 0 1)

Setherington, DT

Sunday Referee, 1933

(First published on Sun Apr 2 1933)

B7/4K2b/2N5/2p1P3/P1k5/2q3Qn/P3P3/1nR1N3

#2

10 + 6

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc1
      • 2.Qb3#
    • 1...Qc2
      • 2.Qb3#
    • 1...Bc2
      • 2.Qg8#
    • 1...Bd3
      • 2.Qxd3#
      • 2.Qg8#
    • 1...Bg8
      • 2.Qd3#
      • 2.Qxg8#
  • Tries
    • 1.Sg2?
      • threat
        • 2.Se3#
      • 1...Qxc1
        • 2.Qb3#
      • 1...Qc2
        • 2.Qb3#
      • 1...Bc2
        • 2.Qg8#
      • 1...Kd5!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Sb4#
        • 2.Sa5#
        • 2.Sa7#
        • 2.Sb8#
        • 2.Sd8#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sxf4!
    • 1.Qxc3+?
      • 1...Kd5
        • 2.Sb4#
        • 2.Sa5#
        • 2.Sa7#
        • 2.Sb8#
        • 2.Sd8#
        • 2.Qc4#
      • 1...Sxc3!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Se3#
      • 1...Qxe5+
        • 2.Sxe5#
      • 1...Kd5
        • 2.Sa5#
      • 1...Qxc2
        • 2.Qb3#
      • 1...Bxc2
        • 2.Qg8#
      • 1...Qe3
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_SPINQ(b),OGATE,XR(A)::QAB1(E)
    • Q(b);OGATE::QAB1(E)
    • B(f);N_GUARD,N_SPINQ(b)::QAB(E)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • Q(b);N_SPINQ(b),OGATE,XR(A)::QAB1(E)
        • Q(b);OGATE::QAB1(E)
        • B(f);N_GUARD,N_SPINQ(b)::QAB(E)
      • Refutation
        • K(d);N_SPINQ(b),S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR2(E),XB(f)
      • Refutation
        • S(c);XQ(E)
    • Try
      • Q(E);CHECK,XQ(b)
      • Refutation
        • S(a);P_SPINS(a),XQ(E)
  • Actual
    • S(B);N_PINQ(b)
    • Threat
      • S(B)
    • Vars
      • Q(b);CHECK,XP(G)::S(H),XQ(b)
      • K(d);S_CUTQ(b),S_FLIGHT::B(J)+S(H)
      • Q(b);OGATE,P_SPINQ(b),XS(B)::QAB1(E)
      • B(f);N_GUARD,XS(B)::QAB(E)
      • Q(b);P_PINP(G)::R(A)+S(B),DCHECK,XQ(b)
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