MESON Chess Problem Database

Problem Display
PID: 148094 (8/2N5/2pp4/8/3k1pN1/8/2Q1P1p1/6K1 w - - 0 1)

Hawes, Frederick Thomas

1st Prize, Australian Chess Review (Block-Threat TT), 1944

8/2N5/2pp4/8/3k1pN1/8/2Q1P1p1/6K1

#2

5 + 5

133 The Problemist Supplement 2013

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.e3#
    • 1...c5
      • 2.Qd3#
    • 1...d5
      • 2.Se6#
  • Tries
    • 1.Kxg2?
      • 1...c5
        • 2.Qd3#
      • 1...d5
        • 2.Se6#
      • 1...f3+!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kxc3!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qb4#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc5
        • 2.Se6#
      • 1...c5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(c);N_GUARD::P(C)
    • P(d);SBLOCK::QAR1(B)
    • P(e);SBLOCK::S(E)
  • Tries
    • Try
      • K(A);P-FLIGHT,XP(a)
      • Vars
        • P(d);SBLOCK::QAR1(B)
        • P(e);SBLOCK::S(E)
      • Refutation
        • P(c);CHECK
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);S_FLIGHT::S(E)
      • P(d);SBLOCK::QAR1(B)
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