MESON Chess Problem Database

Problem Display
PID: 143212 (8/1Kp1N1p1/B7/4Np1q/4kP2/2Q2pP1/8/1b4b1 w - - 0 1)

Shire, David J

3rd HM., The Problemist, 2011

8/1Kp1N1p1/B7/4Np1q/4kP2/2Q2pP1/8/1b4b1

#2

7 + 8

56 The Problemist 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Qd3#
    • 1...Bd3
      • 2.Qxd3#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sd2#
      • 1...Bd3
        • 2.Qe5#
      • 1...Be3
        • 2.Qxe3#
      • 1...Qh2!
    • 1.Sg4?
      • threat
        • 2.Qe5#
      • 1...Bd4
        • 2.Qc6#
      • 1...f2
        • 2.Qe3#
      • 1...fxg4!
    • 1.S5c6?
      • threat
        • 2.Qe5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...f2!
    • 1.Sd7?
      • threat
        • 2.Qe5#
      • 1...f2
        • 2.Sc5#
      • 1...Bd4!
    • 1.Bd3+?
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Ke3!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Sd2#
      • 1...Qxf3
        • 2.Qe5#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Be3
        • 2.Qc6#
      • 1...Qh2
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • B(a);SBLOCK::QAR1(A)
        • B(b);N_GUARD::QAR1(A),XB(b)
      • Refutation
        • Q(f);
    • Try
      • S(D);
      • Threat
        • QAR1(A)
      • Vars
        • B(b);SBLOCK::QAB(A)
        • P(c);S_CUTB(b)::QAR1(A)
      • Refutation
        • P(e);XS(D)
    • Try
      • S(D);
      • Threat
        • QAR1(A)
      • Vars
        • B(b);N_GUARD::QAR1(A),XB(b)
      • Refutation
        • P(c);
    • Try
      • S(D);
      • Threat
        • QAR1(A)
      • Vars
        • P(c);S_CUTB(b)::S(D)
      • Refutation
        • B(b);
    • Try
      • B(E);CHECK
      • Vars
        • B(a);OGATE,XB(E)::QAB1(A),XB(a)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(D);XP(c)
    • Threat
      • S(D)
    • Vars
      • Q(f);SBLOCK,XS(D)::QAR1(A)
      • B(a);N_GUARD::QAB1(A),XB(a)
      • B(b);SBLOCK::QAB(A)
      • Q(f);N_GUARD::S(D)
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