MESON Chess Problem Database

Problem Display
PID: 259133 (8/r5B1/1pBp1N2/b2n4/2Nk1p1K/1Qp4R/5P2/4r3 w - - 0 1)

Clark, Cecil Henry Douglas

Western Morning News, 1923

(First published on Sat Jun 23 1923)

8/r5B1/1pBp1N2/b2n4/2Nk1p1K/1Qp4R/5P2/4r3

#2

8 + 9

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sc7
      • 2.Se4#
    • 1...Se7
      • 2.Se4#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qc4#
      • 1...Ke5
        • 2.Qxd5#
      • 1...Sxf6
        • 2.Qd5#
      • 1...Re5
        • 2.Qc4#
      • 1...Sb4
        • 2.Qxc3#
      • 1...Sc7
        • 2.Sfe4#
      • 1...Se7
        • 2.Sfe4#
      • 1...Se3!
    • 1.Sa3?
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qc4#
      • 1...Ke5
        • 2.Qxd5#
      • 1...Sxf6
        • 2.Qd5#
      • 1...Re5
        • 2.Qc4#
      • 1...Sb4
        • 2.Qxc3#
      • 1...Sc7
        • 2.Se4#
      • 1...Se7
        • 2.Se4#
      • 1...Se3!
    • 1.Se4+?
      • 1...Kxe4
        • 2.Sxd6#
        • 2.Qc2#
      • 1...Sf6
        • 2.Bxf6#
      • 1...Rxg7!
    • 1.Rd3+?
      • 1...Kc5
        • 2.Qb5#
      • 1...Kxd3!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qc4#
      • 1...Ke5
        • 2.Qxd5#
      • 1...Sxf6
        • 2.Qd5#
      • 1...Re5
        • 2.Qc4#
      • 1...Se3
        • 2.Sd7#
      • 1...Sb4
        • 2.Qxc3#
      • 1...Sc7
        • 2.Se4#
      • 1...Se7
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,S_CUTR(i)::B(H)+S(G)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(B),XS(f)
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAR1(B)
        • K(c);S_FLIGHT::QAR1(B),XS(f)
        • S(f);P_SPINS(f),XS(G)::QAR1(B)
        • R(a);SBLOCK::QAR1(B)
        • S(f);N_GUARD,S_CUTB(e)::QAB1(B),XP(b)
        • S(f);N_GUARD,S_CUTR(i)::B(H)+S(G)
      • Refutation
        • S(f);
    • Try
      • S(D);
      • Threat
        • QAR1(B),XS(f)
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAR1(B)
        • K(c);S_FLIGHT::QAR1(B),XS(f)
        • S(f);P_SPINS(f),XS(G)::QAR1(B)
        • R(a);SBLOCK::QAR1(B)
        • S(f);N_GUARD,S_CUTB(e)::QAB1(B),XP(b)
        • S(f);N_GUARD,S_CUTR(i)::B(H)+S(G)
      • Refutation
        • S(f);
    • Try
      • S(G);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::B(H),XS(f)
      • Refutation
        • R(i);XB(H)
    • Try
      • R(C);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAR1(B)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(b),XR(C)
  • Actual
    • S(D);
    • Threat
      • QAR1(B),XS(f)
    • Vars
      • K(c);N_GUARD,S_FLIGHT::QAR1(B)
      • K(c);S_FLIGHT::QAR1(B),XS(f)
      • S(f);P_SPINS(f),XS(G)::QAR1(B)
      • R(a);SBLOCK::QAR1(B)
      • S(f);N_GUARD,S_CUTR(a)::B(H)+S(G)
      • S(f);N_GUARD,S_CUTB(e)::QAB1(B),XP(b)
      • S(f);N_GUARD,S_CUTR(i)::B(H)+S(G)
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