MESON Chess Problem Database

Problem Display
PID: 146675 (3n1Q2/2Pb2pK/qpn1kb1N/8/2p1P3/2B2N1p/7r/5B2 w - - 0 1)

Whitehead, Cyril

Australian Chess Problem Magazine, 1993

3n1Q2/2Pb2pK/qpn1kb1N/8/2p1P3/2B2N1p/7r/5B2

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Bxc4#
    • 1...Qc8
      • 2.Bxc4#
    • 1...Qa1
      • 2.Bxc4#
    • 1...Qa3
      • 2.Bxc4#
    • 1...Qa7
      • 2.Bxc4#
    • 1...Qa8
      • 2.Bxc4#
    • 1...Ra2
      • 2.Bxh3#
    • 1...Rb2
      • 2.Bxh3#
    • 1...Rc2
      • 2.Bxh3#
    • 1...Rd2
      • 2.Bxh3#
    • 1...Re2
      • 2.Bxh3#
    • 1...Rf2
      • 2.Bxh3#
    • 1...Be5
      • 2.Sg5#
    • 1...Bg5
      • 2.Sxg5#
    • 1...Se5
      • 2.Sd4#
    • 1...gxh6
      • 2.Qxf6#
    • 1...g5
      • 2.Qxf6#
    • 1...g6
      • 2.Qxf6#
  • Keys
    • 1.Be5!
      • threat
        • 2.Qd6#
      • 1...Bxe5
        • 2.Sg5#
      • 1...Sxe5
        • 2.Sd4#
      • 1...gxh6
        • 2.Qxf6#
      • 1...Qa3
        • 2.Bxc4#
      • 1...Rd2
        • 2.Bxh3#
      • 1...Be7
        • 2.Qf5#
      • 1...Se7
        • 2.cxd8S#
      • 1...Sb7
        • 2.Qf7#
      • 1...Sf7
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 13
  • Sets
    • Q(d);N_GUARD::B(A),XP(c)
    • R(a);N_GUARD::B(A),XP(b)
    • B(h);N_GUARD::S(C)
    • B(h);N_GUARD::S(C),XB(h)
    • S(f);N_GUARD,SBLOCK,S_CUTB(h)::S(C)
    • P(j);N_GUARD,XS(E)::QAR1(H),XB(h)
    • P(j);N_GUARD::QAR1(H),XB(h)
  • Actual
    • B(B);
    • Threat
      • QAR1(H)
    • Vars
      • B(h);N_GUARD,SBLOCK,XB(B)::S(C)
      • S(f);N_GUARD,SBLOCK,XB(B)::S(C)
      • P(j);N_GUARD,XS(E)::QAR1(H),XB(h)
      • Q(d);N_GUARD::B(A),XP(c)
      • R(a);N_GUARD::B(A),XP(b)
      • B(h);OGATE,SBLOCK::QAB1(H)
      • S(f);N_GUARD,S_CUTB(h)::PXS(k)=S
      • S(k);N_GUARD::QAB1(H)
      • S(k);N_GUARD::QAB1(H),XS(k)
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