MESON Chess Problem Database

Problem Display
PID: 145666 (8/8/1pK1pp2/1P2k2n/8/3P4/2B3N1/5Q2 w - - 0 1)

Bridgwater, Ralph Herbert

Birmingham Post, 1923

(First published on Tue Jul 17 1923)

8/8/1pK1pp2/1P2k2n/8/3P4/2B3N1/5Q2

#2

6 + 5

15372 Bridgwater Scrapbook 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qa1#
    • 1...Sg3
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sg7
      • 2.Qf4#
    • 1...f5
      • 2.Qa1#
  • Tries
    • 1.Bb3?
      • 1...Sf4
        • 2.Qxf4#
      • 1...f5
        • 2.Qa1#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...Kd4!
    • 1.Ba4?
      • 1...Sf4
        • 2.Qxf4#
      • 1...f5
        • 2.Qa1#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...Kd4!
    • 1.Qe2+?
      • 1...Kf5
        • 2.Qxh5#
      • 1...Kd4!
    • 1.Qc1?
      • 1...Kd4
        • 2.Qb2#
        • 2.Qa1#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...f5
        • 2.Qb2#
        • 2.Qa1#
      • 1...Kf5!
    • 1.Qe1+?
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf5!
    • 1.Qg1?
      • threat
        • 2.d4#
      • 1...f5
        • 2.Qa1#
      • 1...Kf5!
  • Keys
    • 1.Qd1!
      • threat
        • 2.d4#
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf5
        • 2.Qxh5#
      • 1...f5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(a);S_FLIGHT::QAB(A)
    • S(b);N_GUARD::QAB1(A)
    • S(b);N_GUARD::QAB1(A),XS(b)
    • P(e);SBLOCK::QAB(A)
  • Tries
    • Try
      • B(B);
      • Vars
        • S(b);N_GUARD::QAB1(A),XS(b)
        • P(e);SBLOCK::QAB(A)
        • S(b);N_GUARD::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • S(b);N_GUARD::QAB1(A),XS(b)
        • P(e);SBLOCK::QAB(A)
        • S(b);N_GUARD::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • P(D)
      • Vars
        • P(e);SBLOCK::QAB(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • P(D)
    • Vars
      • K(a);S_FLIGHT::QAB(A)
      • K(a);P-FLIGHT::QAR2(A),XS(b)
      • P(e);SBLOCK::QAB(A)
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