MESON Chess Problem Database

Problem Display
PID: 121350 (8/8/4K3/3Q1p2/2n4p/7k/4b2N/5N2 w - - 0 1)

Cumpe, Josef

Ostrauer Morgenzeitung, 1934

8/8/4K3/3Q1p2/2n4p/7k/4b2N/5N2

#2

4 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Qf3#
    • 1...Bf3
      • 2.Qxf3#
  • Tries
    • 1.Qxf5+?
      • 1...Bg4
        • 2.Qxg4#
      • 1...Kg2!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sf2#
      • 1...Kxg4
        • 2.Qxf5#
      • 1...Bxf1
        • 2.Qf3#
      • 1...Bxg4
        • 2.Qh1#
      • 1...fxg4
        • 2.Qh1#
      • 1...Bf3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAR2(C)
    • B(a);N_GUARD::QAR2(C),XB(a)
  • Tries
    • Try
      • Q(C);CHECK,XP(e)
      • Vars
        • B(a);N_GUARD,P_PINQ(C),P_SPINB(a)::QAB1(C),XB(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(B)::QAB1(C),XP(e)
      • B(a);N_GUARD,XS(A)::QAR2(C)
      • B(a);SBLOCK,XS(B)::QAR2(C)
      • P(e);SBLOCK,XS(B)::QAR2(C)
      • B(a);N_GUARD::QAR2(C),XB(a)
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