MESON Chess Problem Database

Problem Display
PID: 27339 (2Q5/2b5/1kqP4/1P2N3/2P1B3/8/8/R4K2 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

2Q5/2b5/1kqP4/1P2N3/2P1B3/8/8/R4K2

#2

8 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Sd7#
      • 2.Qxc7#
    • 1...Qxb5
      • 2.Qxc7#
    • 1...Qd5
      • 2.Sd7#
      • 2.Qxc7#
    • 1...Qb7
      • 2.Sd7#
    • 1...Qd7
      • 2.Sxd7#
    • 1...Qa8
      • 2.Sd7#
      • 2.Qxc7#
    • 1...Qe8
      • 2.Qxc7#
    • 1...Qc5
      • 2.Sd7#
      • 2.Ra6#
      • 2.Qa6#
      • 2.Qb7#
    • 1...Bxd6
      • 2.Qxc6#
    • 1...Bb8
      • 2.Qxc6#
    • 1...Bd8
      • 2.Qxc6#
  • Keys
    • 1.Sd3!
      • threat
        • 2.Ra6#
        • 2.Qa6#
      • 1...Qxb5
        • 2.Qb7#
        • 2.Qxc7#
      • 1...Qxc4
        • 2.Qa6#
        • 2.Qb7#
      • 1...Bxd6
        • 2.Ra6#
        • 2.Qxc6#
      • 1...Qb7
        • 2.Qxb7#
      • 1...Qa8
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD,P_PINP(C),XP(E)::QAB1(H),XB(c)
    • Q(b);N_GUARD::S(F)
    • Q(b);N_GUARD::S(F),XQ(b)
    • Q(b);N_GUARD::QAB1(H),XB(c)
    • B(c);OGATE,XP(G)::QAR1(H),XQ(b)
    • B(c);OGATE::QAR1(H),XQ(b)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);N_GUARD::QAR1(H),XQ(b)
      • Q(b);N_GUARD::QAB1(H),XB(c)
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