MESON Chess Problem Database

Problem Display
PID: 27922 (8/6K1/8/3p4/7N/4Q3/5bRN/6nk w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

8/6K1/8/3p4/7N/4Q3/5bRN/6nk

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qxg1#
    • 1...Bg3
      • 2.Qxg1#
    • 1...Bxh4
      • 2.Qxg1#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Rh2#
      • 1...Se2
        • 2.Qh3#
      • 1...Bg3
        • 2.Sxg3#
        • 2.Rxg1#
        • 2.Qxg1#
      • 1...Sh3
        • 2.Qxh3#
      • 1...Sf3!
    • 1.S2f3?
      • threat
        • 2.Rh2#
      • 1...Bg3
        • 2.Rxg1#
        • 2.Qxg1#
      • 1...Sxf3!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sxf2#
        • 2.Rh2#
      • 1...Bxe3
        • 2.Rh2#
      • 1...Bxh4
        • 2.Rxg1#
        • 2.Rh2#
        • 2.Qxg1#
      • 1...Se2
        • 2.Sxf2#
        • 2.Qh3#
      • 1...Be1
        • 2.Rxg1#
        • 2.Rh2#
        • 2.Qxg1#
      • 1...Bg3
        • 2.Rxg1#
        • 2.Qxg1#
      • 1...Sf3
        • 2.Sxf2#
      • 1...Sh3
        • 2.Qxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(c);OGATE::QAR1(C),XS(a)
    • B(c);OGATE,XS(D)::QAR1(C),XS(a)
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(A)
      • Vars
        • S(a);N_GUARD::QAR2(C)
        • S(a);N_GUARD::QAR2(C),XS(a)
      • Refutation
        • S(a);
    • Try
      • S(B);
      • Threat
        • R1(A)
      • Refutation
        • S(a);XS(B)
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • B(c);XQ(C)::R1(A)
      • S(a);::S(B),XB(c)
      • S(a);N_GUARD::QAR2(C),XS(a)
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