MESON Chess Problem Database

Problem Display
PID: 150449 (Q1n5/b2p4/2pP2P1/8/8/3B4/3RK3/k7 w - - 0 1)

Dawson, Thomas Rayner

Pittsburgh Sun, 1927

(First published on Sat Jul 30 1927)

Q1n5/b2p4/2pP2P1/8/8/3B4/3RK3/k7

#2

6 + 5

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Qh8#
    • 1...Sxd6
      • 2.Qxa7#
    • 1...Se7
      • 2.Qxa7#
    • 1...c5
      • 2.Qh1#
  • Tries
    • 1.Kd1?
      • 1...Sxd6
        • 2.Qxa7#
      • 1...Sb6
        • 2.Qh8#
      • 1...Se7
        • 2.Qxa7#
      • 1...c5!
    • 1.Ke1?
      • 1...Sxd6
        • 2.Qxa7#
      • 1...Sb6
        • 2.Qh8#
      • 1...Se7
        • 2.Qxa7#
      • 1...c5!
    • 1.Kf1?
      • 1...Sxd6
        • 2.Qxa7#
      • 1...Sb6
        • 2.Qh8#
      • 1...Se7
        • 2.Qxa7#
      • 1...c5!
    • 1.Kf3?
      • 1...Sxd6
        • 2.Qxa7#
      • 1...Sb6
        • 2.Qh8#
      • 1...Se7
        • 2.Qxa7#
      • 1...c5!
    • 1.Be4?
      • 1...Sxd6
        • 2.Qxa7#
      • 1...Sb6
        • 2.Qh8#
      • 1...Se7
        • 2.Qxa7#
      • 1...c5!
    • 1.g7?
      • 1...Sxd6
        • 2.Qxa7#
      • 1...c5
        • 2.Qh1#
      • 1...Se7
        • 2.Qxa7#
      • 1...Sb6!
  • Keys
    • 1.Bf5!
      • 1...Sxd6
        • 2.Qxa7#
      • 1...c5
        • 2.Qh1#
      • 1...Sb6
        • 2.Qh8#
      • 1...Se7
        • 2.Qxa7#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(e);OGATE::QAB(F)
    • S(e);N_GUARD,XP(D)::QAR(F),XB(c)
    • S(e);N_GUARD::QAR(F),XB(c)
    • P(b);OGATE::QAB1(F)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • S(e);N_GUARD,XP(D)::QAR(F),XB(c)
        • S(e);OGATE::QAB(F)
        • S(e);N_GUARD::QAR(F),XB(c)
      • Refutation
        • P(b);
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(e);N_GUARD,XP(D)::QAR(F),XB(c)
        • S(e);OGATE::QAB(F)
        • S(e);N_GUARD::QAR(F),XB(c)
      • Refutation
        • P(b);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • S(e);N_GUARD,XP(D)::QAR(F),XB(c)
        • S(e);OGATE::QAB(F)
        • S(e);N_GUARD::QAR(F),XB(c)
      • Refutation
        • P(b);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • S(e);N_GUARD,XP(D)::QAR(F),XB(c)
        • S(e);OGATE::QAB(F)
        • S(e);N_GUARD::QAR(F),XB(c)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Vars
        • S(e);N_GUARD,XP(D)::QAR(F),XB(c)
        • S(e);OGATE::QAB(F)
        • S(e);N_GUARD::QAR(F),XB(c)
      • Refutation
        • P(b);
    • Try
      • P(E);
      • Vars
        • S(e);N_GUARD,XP(D)::QAR(F),XB(c)
        • P(b);OGATE::QAB1(F)
        • S(e);N_GUARD::QAR(F),XB(c)
      • Refutation
        • S(e);
  • Actual
    • B(C);
    • Vars
      • S(e);N_GUARD,XP(D)::QAR(F),XB(c)
      • P(b);OGATE::QAB1(F)
      • S(e);OGATE::QAB(F)
      • S(e);N_GUARD::QAR(F),XB(c)
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