MESON Chess Problem Database

Problem Display
PID: 141420 (8/1p2N3/pP1p4/Q1pPk1P1/2P3p1/p3K1Pb/P6N/1n6 w - - 0 1)

Lawton, Howard

Sheffield Telegraph & Star, 1937

(First published on Sat Jun 26 1937)

8/1p2N3/pP1p4/Q1pPk1P1/2P3p1/p3K1Pb/P6N/1n6

#2

10 + 9

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Sxg4#
    • 1...Bg2
      • 2.Sxg4#
    • 1...Sd2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
  • Tries
    • 1.Kd3?
      • threat
        • 2.Qe1#
      • 1...Bg2
        • 2.Sxg4#
      • 1...Sd2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Bf1+!
    • 1.g6?
      • 1...Bf1
        • 2.Sxg4#
      • 1...Bg2
        • 2.Sxg4#
      • 1...Sd2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Kf6!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Kd3#
      • 1...Bf1
        • 2.Sxg4#
      • 1...Bg2
        • 2.Sxg4#
      • 1...Sd2
        • 2.Qa1#
      • 1...Sc3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::S(B),XP(d)
    • S(a);N_GUARD::QAB(F)
    • S(a);N_GUARD::QAB(F),XS(a)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAR(F)
      • Vars
        • B(c);N_GUARD::S(B),XP(d)
        • S(a);N_GUARD::QAB(F)
        • S(a);N_GUARD::QAB(F),XS(a)
      • Refutation
        • B(c);CHECK
    • Try
      • P(H);
      • Vars
        • B(c);N_GUARD::S(B),XP(d)
        • S(a);N_GUARD::QAB(F)
        • S(a);N_GUARD::QAB(F),XS(a)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+K(C)
    • Vars
      • B(c);N_GUARD::S(B),XP(d)
      • S(a);OGATE::QAB(F)
      • S(a);N_GUARD::QAB(F),XS(a)
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