MESON Chess Problem Database

Problem Display
PID: 225971 (1R4Nk/5K2/8/4b3/8/8/6p1/6Q1 w - - 0 1)

Zhezherun, Bogdan Valeriovich

Zadachi i Etyudi, 1999

1R4Nk/5K2/8/4b3/8/8/6p1/6Q1

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Sf6#
      • 2.Qh2#
    • 1...Bb2
      • 2.Sf6#
      • 2.Qh2#
    • 1...Bh2
      • 2.Qxh2#
    • 1...Bc3
      • 2.Sf6#
      • 2.Qh2#
    • 1...Bd4
      • 2.Sf6#
      • 2.Qh2#
    • 1...Bf6
      • 2.Sxf6#
  • Tries
    • 1.Qxg2?
      • threat
        • 2.Qh3#
      • 1...Kh7
        • 2.Qh3#
      • 1...Bf4
        • 2.Qg7#
      • 1...Bf6
        • 2.Sxf6#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Bg3!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qh4#
      • 1...Kh7
        • 2.Qh4#
      • 1...Bxd4
        • 2.Sf6#
      • 1...Bf6
        • 2.Sxf6#
      • 1...Bg7
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(b);N_GUARD::QAR(A),XB(b)
    • B(b);N_GUARD::R(C)+S(D),XB(b)
  • Tries
    • Try
      • Q(A);XP(a)
      • Threat
        • QAR(A)
      • Vars
        • K(c);P-FLIGHT::QAR(A)
        • B(b);N_GUARD::QAB1(A)
        • B(b);N_GUARD::R(C)+S(D),XB(b)
        • B(b);N_GUARD::QAB1(A),XB(b)
      • Refutation
        • B(b);
  • Actual
    • Q(A);P_PINB(b)
    • Threat
      • QAR(A)
    • Vars
      • K(c);N_SPINB(b),P-FLIGHT::QAR(A)
      • B(b);N_GUARD,N_SPINB(b),XQ(A)::R(C)+S(D)
      • B(b);N_GUARD::R(C)+S(D),XB(b)
      • B(b);OGATE::QAB1(A),XB(b)
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