MESON Chess Problem Database

Problem Display
PID: 58063 (4R1B1/4n2N/4nB1N/3r3b/2P1kppR/2Pp4/3P1Q2/6K1 w - - 0 1)

Fillery, William Edmund Frank

Chess Life, 1958

4R1B1/4n2N/4nB1N/3r3b/2P1kppR/2Pp4/3P1Q2/6K1

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Bxd5#
    • 1...Sc5
      • 2.Bxd5#
    • 1...Sg5
      • 2.Bxd5#
    • 1...Sg7
      • 2.Bxd5#
    • 1...Sd8
      • 2.Bxd5#
    • 1...Sf8
      • 2.Bxd5#
    • 1...Sf5
      • 2.Sg5#
    • 1...f3
      • 2.Qe3#
    • 1...g3
      • 2.Qe3#
  • Tries
    • 1.Sg5+?
      • 1...Sxg5
        • 2.Bxd5#
      • 1...Rxg5!
    • 1.Rxg4?
      • threat
        • 2.Qe3#
        • 2.Qg2#
      • 1...Sd4
        • 2.Bxd5#
        • 2.Rxf4#
        • 2.Qe3#
        • 2.Qxf4#
      • 1...Sg5
        • 2.Bxd5#
        • 2.Rxf4#
        • 2.Qe3#
        • 2.Qxf4#
      • 1...Sf5
        • 2.Sg5#
        • 2.Rxf4#
        • 2.Qg2#
        • 2.Qxf4#
      • 1...Bxg4!
  • Keys
    • 1.Kg2!
      • threat
        • 2.Qe1#
      • 1...f3+
        • 2.Qxf3#
      • 1...Sd4
        • 2.Bxd5#
      • 1...Sf5
        • 2.Sg5#
      • 1...g3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • S(g);OGATE,P_SPINS(h)::B(K),XR(e)
    • S(h);P_SPINS(g),S_CUTR(e)::S(I)
    • P(c);N_GUARD,P_SPINP(d)::QAR1(C)
    • P(d);P_SPINP(c)::QAR1(C)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • S(g);OGATE,P_SPINS(h),XS(I)::B(K),XR(e)
      • Refutation
        • R(e);XS(I)
    • Try
      • R(F);P_PINP(c),XP(d)
      • Threat
        • DUALS(2)
      • Refutation
        • B(f);N_SPINP(c),XR(F)
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • QAR(C)
    • Vars
      • P(c);CHECK,P_SPINP(d)::QAB1(C),XP(c)
      • S(g);OGATE,P_SPINS(h)::B(K),XR(e)
      • S(h);P_SPINS(g),S_CUTR(e)::S(I)
      • P(d);P_SPINP(c)::QAR1(C)
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