MESON Chess Problem Database

Problem Display
PID: 238679 (8/3Q4/pr1N3q/4P2r/n2N2R1/1PPkpP2/4p3/2K1B3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

idee & form, 2000

8/3Q4/pr1N3q/4P2r/n2N2R1/1PPkpP2/4p3/2K1B3

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Qf5#
    • 1...Rh2
      • 2.Qf5#
    • 1...Rh3
      • 2.Qf5#
    • 1...Rh4
      • 2.Qf5#
    • 1...Rf5
      • 2.Qxf5#
  • Tries
    • 1.Se6?
      • threat
        • 2.Rd4#
      • 1...Rxd6
        • 2.Qxd6#
      • 1...Qf4
        • 2.Sxf4#
      • 1...Rb4
        • 2.Sc4#
      • 1...Rh4!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Rd4#
      • 1...Qxd6
        • 2.Qxd6#
      • 1...Qf4
        • 2.Se4#
      • 1...Rh4
        • 2.Qf5#
      • 1...Rb4
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(e);N_GUARD,P_PINB(B)::QAB(J)
    • R(e);N_GUARD::QAB(J)
    • R(e);N_GUARD::QAB(J),XR(e)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • R(g);OGATE,P_SPINR(g),XS(I)::QAR(J),XR(g)
        • Q(h);N_GUARD::S(F),XQ(h)
        • R(g);N_GUARD::QAR(J)+S(I)
      • Refutation
        • R(e);
  • Actual
    • S(F);
    • Threat
      • R1(G)
    • Vars
      • Q(h);OGATE,P_SPINQ(h),XS(I)::QAR(J),XQ(h)
      • Q(h);N_GUARD::QAR(J)+S(I)
      • R(e);N_GUARD::QAB(J)
      • R(g);N_GUARD::S(F),XR(g)
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