MESON Chess Problem Database

Problem Display
PID: 7777 (8/8/4Q3/8/5P2/6p1/6kN/4K2R w K - 0 1)

Ketzscher, Robert

The Problemist, 1993

8/8/4Q3/8/5P2/6p1/6kN/4K2R

#2

5 + 2

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4?
      • threat
        • 2.Qd5#
        • 2.Qe4#
        • 2.Qc6#
      • 1...Kf3
        • 2.0-0#
      • 1...Kxh1!
    • 1.Rf1?
      • 1...gxh2
        • 2.Qg4#
      • 1...Kxh2!
    • 1.Qh3+?
      • 1...Kxh1
        • 2.Sf3#
      • 1...Kxh3!
    • 1.Qe2+?
      • 1...Kh3
        • 2.Sf1#
        • 2.Sg4#
      • 1...Kxh1!
  • Keys
    • 1.Sf3!
      • 1...Kxh1
        • 2.Qh3#
      • 1...Kxf3
        • 2.0-0#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • K(a);S_FLIGHT::0-0
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • R(B);
      • Vars
        • P(b);OGATEB,SBLOCK,XS(C)::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(B)::QAR(E)+S(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(B)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT,XR(B)::QAR2(E)
      • K(a);S_FLIGHT,XS(C)::0-0
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