MESON Chess Problem Database

Problem Display
PID: 273568 (4K3/2p4P/3p1Q2/4n3/N1Bk3r/3Pr3/5B2/3R2b1 w - - 0 1)

Buttner, Ernst

Die Tat, 1954

4K3/2p4P/3p1Q2/4n3/N1Bk3r/3Pr3/5B2/3R2b1

#2

8 + 7

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Qf4#
    • 1...Rh2
      • 2.Qf4#
    • 1...Rh3
      • 2.Qf4#
    • 1...Rf4
      • 2.Qxf4#
    • 1...Rh5
      • 2.Qf4#
    • 1...Rh6
      • 2.Qf4#
    • 1...Rxh7
      • 2.Qf4#
    • 1...c5
      • 2.Qxd6#
    • 1...c6
      • 2.Qxd6#
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qd5#
      • 1...Sxd3
        • 2.Rxd3#
      • 1...Sxc4
        • 2.dxc4#
      • 1...Sf3
        • 2.Qxe3#
      • 1...Sg4
        • 2.Qe4#
      • 1...Sc6
        • 2.Qxe3#
      • 1...Sg6
        • 2.Qxe3#
      • 1...Sd7
        • 2.Qxe3#
      • 1...Sf7
        • 2.Qxe3#
      • 1...d5
        • 2.Qxd5#
      • 1...c6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 8
  • Sets
    • R(d);N_GUARD::QAR2(F)
    • R(d);N_GUARD::QAR2(F),XR(d)
    • R(d);N_GUARD,XP(G)::QAR2(F)
    • P(g);N_GUARD::QAR2(F),XP(f)
  • Actual
    • Q(F);N_PINS(e)
    • Threat
      • QAR1(F)
    • Vars
      • S(e);OGATE,P_PINQ(F),P_SPINS(e),XP(C)::R1(A),XS(e)
      • S(e);OGATE,P_PINQ(F),XB(E)::R(A)+P(C),XS(e)
      • S(e);OGATE,P_PINQ(F)::QAB1(F),XR(b)
      • S(e);OGATE,P_PINQ(F)::QAR1(F)
      • P(f);::QAR1(F),XP(f)
      • P(g);N_GUARD::QAR2(F),XP(f)
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