MESON Chess Problem Database

Problem Display
PID: 154204 (2N1n3/2p5/1N2P3/1rp1k3/1p3p1B/5K1B/8/b2n2Q1 w - - 0 1)

Ansell, George Kirkpatrick

Scholastic Globe, 0000

2N1n3/2p5/1N2P3/1rp1k3/1p3p1B/5K1B/8/b2n2Q1

#2

7 + 9

15351 SCPF/BCPS Black Books 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb6
      • 2.Qxc5#
    • 1...Bd4
      • 2.Qg5#
    • 1...Sf2
      • 2.Qxa1#
    • 1...Se3
      • 2.Qxa1#
    • 1...Sd6
      • 2.Qg7#
    • 1...Sg7
      • 2.Qxg7#
  • Tries
    • 1.Bf6+?
      • 1...Kxf6
        • 2.Sd7#
      • 1...Sxf6!
    • 1.Qe1+?
      • 1...Se3
        • 2.Qxa1#
      • 1...Kd4!
    • 1.Qg7+?
      • 1...Sf6
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Sxg7!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Qg5#
      • 1...Kf6
        • 2.Sd7#
      • 1...Sxf2
        • 2.Qxa1#
      • 1...Se3
        • 2.Qxa1#
      • 1...Sd6
        • 2.Qg7#
      • 1...Sg7
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD,XS(E)::QAR2(A),XP(f)
    • B(a);SBLOCK::QAR2(A)
    • S(b);OGATE::QAB(A),XB(a)
    • S(i);N_GUARD::QAB(A)
    • S(i);N_GUARD::QAB(A),XS(i)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(g);S_FLIGHT,XB(D)::S(E)
      • Refutation
        • S(i);XB(D)
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);OGATE,P_SPINS(b)::QAB(A),XB(a)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • S(i);XQ(A)
  • Actual
    • B(D);
    • Threat
      • QAR2(A)
    • Vars
      • K(g);S_FLIGHT::S(E)
      • S(b);OGATE,XB(D)::QAB(A),XB(a)
      • S(b);OGATE::QAB(A),XB(a)
      • S(i);N_GUARD::QAB(A)
      • S(i);N_GUARD::QAB(A),XS(i)
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