MESON Chess Problem Database

Problem Display
PID: 189947 (nr6/RPP1R3/2kp4/2Np4/3p4/P7/8/K1Q5 w - - 0 1)

Dunka, Gyorgy Jusztin

Pesti Naplo, 1912

nr6/RPP1R3/2kp4/2Np4/3p4/P7/8/K1Q5

#2

8 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.bxa8Q+?
      • 1...Kb5
        • 2.cxb8Q#
        • 2.cxb8R#
      • 1...Kb6
        • 2.cxb8Q#
        • 2.cxb8R#
      • 1...Rb7
        • 2.Qxb7#
      • 1...Rxa8!
  • Keys
    • 1.a4!
      • threat
        • 2.Sd7#
      • 1...Kb6
        • 2.Ra6#
      • 1...dxc5
        • 2.Qh6#
      • 1...Sb6
        • 2.cxb8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(F);CHECK,XS(e)
      • Vars
        • K(c);S_FLIGHT::PXR(f)=Q
        • K(c);P-FLIGHT::PXR(f)=Q
        • R(f);N_GUARD,P_SPINR(f)::QAB1(F),XR(f)
      • Refutation
        • R(f);XQ(F)
  • Actual
    • P(C);
    • Threat
      • QAR(B)+S(D)
    • Vars
      • K(c);P-FLIGHT::R1(E)
      • P(d);OGATEB,P_SPINP(d),SBLOCK,XS(D)::QAR(B)
      • S(e);SBLOCK::PXR(f)=S
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