MESON Chess Problem Database

Problem Display
PID: 143653 (2b4K/4p3/2Q1p3/r1p5/3k4/1P1N4/P5N1/bB1R4 w - - 0 1)

Easter, Norris

Bristol Times and Mirror, 1927

(First published on Sat Oct 1 1927)

2b4K/4p3/2Q1p3/r1p5/3k4/1P1N4/P5N1/bB1R4

#2

8 + 7

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qxc4#
  • Tries
    • 1.Sf2+?
      • 1...Ke5
        • 2.Sg4#
      • 1...Kc3!
    • 1.Qe4+?
      • 1...Kc3
        • 2.Qc4#
        • 2.Qe5#
      • 1...Kxe4+!
    • 1.Qxc5+?
      • 1...Ke4+
        • 2.Se5#
      • 1...Rxc5!
    • 1.Qd6+?
      • 1...Kc3
        • 2.Qe5#
      • 1...Ke4+
        • 2.Se5#
      • 1...exd6!
    • 1.Qxe6?
      • threat
        • 2.Qc4#
        • 2.Qe5#
      • 1...Kc3
        • 2.Qc4#
        • 2.Qe5#
      • 1...Ra4
        • 2.Qe5#
      • 1...Ba6
        • 2.Qe5#
      • 1...c4
        • 2.Qxc4#
      • 1...Bxe6!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qe5#
      • 1...Ke4+
        • 2.Se5#
      • 1...Kd5+
        • 2.Sb2#
      • 1...Kc3
        • 2.Qe5#
      • 1...c4
        • 2.Qxc4#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATE::QAR1(G),XP(d)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::S(F)
      • Refutation
        • K(b);P_SPINP(d),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Refutation
        • K(b);CHECK,P-FLIGHT,XQ(G)
    • Try
      • Q(G);CHECK,XP(d)
      • Vars
        • K(b);CHECK,P-FLIGHT::B(A)+S(F)
      • Refutation
        • R(c);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(G)
        • K(b);CHECK,P-FLIGHT::B(A)+S(F)
      • Refutation
        • P(f);XQ(G)
    • Try
      • Q(G);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::QAB1(G)
        • B(g);::QAB1(G)
        • P(d);::QAR1(G),XP(d)
      • Refutation
        • B(g);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • K(b);CHECK,P-FLIGHT::B(A)+S(F)
      • K(b);CHECK,P-FLIGHT::R(B)+S(F)
      • K(b);P_SPINP(d),S_FLIGHT::QAB(G)
      • P(d);OGATE::QAR1(G),XP(d)
      • P(e);::QAB1(G),XP(e)
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