MESON Chess Problem Database

Problem Display
PID: 174149 (5n2/1K2p1N1/6p1/1p1k4/3r4/B2PQ3/8/8 w - - 0 1)

Buchner, Richard

Dresdner Volkszeitung, 1927

5n2/1K2p1N1/6p1/1p1k4/3r4/B2PQ3/8/8

#2

5 + 6

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qc5#
    • 1...Re4
      • 2.Qc5#
      • 2.Qxe4#
    • 1...Rf4
      • 2.Qc5#
    • 1...Rg4
      • 2.Qc5#
    • 1...Rh4
      • 2.Qc5#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sd7
      • 2.Qe6#
    • 1...Sh7
      • 2.Qe6#
  • Tries
    • 1.Qf3+?
      • 1...Re4
        • 2.Qxe4#
      • 1...Ke5!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qe5#
      • 1...Kxd6
        • 2.Qxd4#
      • 1...Rxd3
        • 2.Qxd3#
      • 1...exd6
        • 2.Qg5#
      • 1...Re4
        • 2.Qc5#
      • 1...Sd7
        • 2.Qe6#
      • 1...e5
        • 2.Qxe5#

Anticipated by 110391(1904), 181080(1904)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • R(a);OGATE::QAR1(C)
    • S(f);N_GUARD::QAB1(C),XS(f)
    • S(f);N_GUARD::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(C),XR(a)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • B(A);
    • Threat
      • QAR1(C)
    • Vars
      • K(c);P-FLIGHT,XB(A)::QAR2(C),XR(a)
      • R(a);OGATE,XP(B)::QAR2(C),XR(a)
      • P(e);N_GUARD,SBLOCK,XB(A)::QAR(C)
      • R(a);OGATE::QAR1(C)
      • S(f);N_GUARD::QAB1(C)
      • P(e);::QAR1(C),XP(e)
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