MESON Chess Problem Database

Problem Display
PID: 46175 (1Qb5/3N4/rn4K1/rk2N3/p7/1pPP4/1b6/n7 w - - 0 1)

Shanahan, Ian

The Problemist, 2002

1Qb5/3N4/rn4K1/rk2N3/p7/1pPP4/1b6/n7

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qxb6#
    • 1...Ra8
      • 2.Qxb6#
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qb4#
        • 2.Qc5#
        • 2.Qc6#
      • 1...Bxc3
        • 2.Qc5#
      • 1...Bxd7
        • 2.Qb4#
      • 1...Sxd7
        • 2.c4#
      • 1...Ra7
        • 2.Qxb6#
      • 1...Ra8
        • 2.Qxb6#
      • 1...a3
        • 2.Qb4#
        • 2.Qc6#
      • 1...Ba3
        • 2.Qc6#
      • 1...Bb7
        • 2.Qb4#
        • 2.Qc5#
      • 1...Sc2
        • 2.Qc5#
        • 2.Qc6#
      • 1...Sc4
        • 2.dxc4#
      • 1...Sd5
        • 2.c4#
      • 1...Sa8
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(g);N_GUARD::QAR1(F),XS(h)
  • Actual
    • Q(F);N_PINS(h)
    • Threat
      • DUALS(3)
    • Vars
      • B(b);XP(A)::QAR1(F)
      • B(i);XS(E)::QAR1(F)
      • S(h);N_GUARD,P_PINQ(F),XS(E)::P(A)
      • R(g);N_GUARD::QAR1(F),XS(h)
      • B(b);::QAB1(F)
      • S(h);OGATE,P_PINQ(F)::P(B),XS(h)
      • S(h);N_GUARD,P_PINQ(F)::P(A)
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