MESON Chess Problem Database

Problem Display
PID: 203768 (8/K1p1q3/b1p5/2Q1pp2/R1N1Np2/p1pk1Bp1/6R1/n3b1B1 w - - 0 1)

Clark, Cecil Henry Douglas

Chess Problem Research Pamphlet, 1954

8/K1p1q3/b1p5/2Q1pp2/R1N1Np2/p1pk1Bp1/6R1/n3b1B1

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Sxe5#
    • 1...Qxc5+
      • 2.Sxc5#
    • 1...Qg5
      • 2.Sxe5#
    • 1...Qd8
      • 2.Sxe5#
    • 1...Qf8
      • 2.Sxe5#
    • 1...Qd7
      • 2.Sxe5#
    • 1...Qf7
      • 2.Sxe5#
    • 1...Qh7
      • 2.Sxe5#
    • 1...Bxc4
      • 2.Qxc4#
  • Tries
    • 1.Sb2+?
      • 1...cxb2
        • 2.Be2#
      • 1...axb2!
    • 1.Sxa3?
      • threat
        • 2.Be2#
      • 1...Qxc5+
        • 2.Sxc5#
      • 1...fxe4
        • 2.Bxe4#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bf2!
    • 1.Be2+?
      • 1...Kxe4
        • 2.Sd2#
        • 2.Sd6#
        • 2.Qxc6#
      • 1...Kc2!
  • Keys
    • 1.Se3!
      • threat
        • 2.Be2#
      • 1...Qxc5+
        • 2.Sxc5#
      • 1...fxe3
        • 2.Qxe3#
      • 1...fxe4
        • 2.Bxe4#
      • 1...Bf2
        • 2.Qxc3#
      • 1...Bc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(m);N_GUARD::S(E),XP(h)
    • Q(m);CHECK,XQ(G)::S(F),XQ(m)
    • B(j);OGATE,XS(E)::QAB1(G),XB(j)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • P(d);XS(E)::B(C)
      • Refutation
        • P(c);XS(E)
    • Try
      • S(E);XP(c)
      • Threat
        • B(C)
      • Vars
        • Q(m);CHECK,XQ(G)::S(F),XQ(m)
        • P(i);OGATE,XS(F)::B(C),XP(i)
        • B(j);N_GUARD::QAB1(G),XB(j)
      • Refutation
        • B(b);P_PINQ(G)
    • Try
      • B(C);CHECK
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • B(C)
    • Vars
      • Q(m);CHECK,XQ(G)::S(F),XQ(m)
      • P(g);OGATE,XS(E)::QAR1(G),XP(g)
      • P(i);OGATE,XS(F)::B(C),XP(i)
      • B(b);N_GUARD::QAR1(G),XP(d)
      • B(j);N_GUARD::QAB1(G),XB(j)
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Developed and maintained by Brian Stephenson.
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