MESON Chess Problem Database

Problem Display
PID: 59582 (8/8/5P1n/3pN2K/4k2P/4PR1Q/2P1N2B/3n3b w - - 0 1)

Guida, Marco

The Problemist, 2005

8/8/5P1n/3pN2K/4k2P/4PR1Q/2P1N2B/3n3b

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf3+
      • 2.Qxf3#
    • 1...Sb2
      • 2.Sc3#
    • 1...Sf2
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sxe3
      • 2.Rxe3#
    • 1...Sg4
      • 2.Qxg4#
    • 1...Sf5
      • 2.Qg4#
      • 2.Qxf5#
    • 1...Sf7
      • 2.Qg4#
      • 2.Qf5#
    • 1...Sg8
      • 2.Qg4#
      • 2.Qf5#
  • Tries
    • 1.Kxh6?
      • threat
        • 2.Qg4#
        • 2.Qf5#
      • 1...Bxf3
        • 2.Qxf3#
      • 1...Sxe3
        • 2.Rxe3#
      • 1...Sf2
        • 2.Sc3#
        • 2.Qf5#
      • 1...d4!
    • 1.Sg4?
      • threat
        • 2.Rf4#
      • 1...Bxf3
        • 2.Sg3#
      • 1...Sxg4
        • 2.Qxg4#
      • 1...d4!
    • 1.Qg3?
      • threat
        • 2.Qf4#
      • 1...Bxf3+
        • 2.Qxf3#
      • 1...d4!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Sg3#
      • 1...Bxf3+
        • 2.Sg4#
      • 1...Sxe3
        • 2.Rf4#
      • 1...Sf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(b);CHECK,OGATE,XR(E)::QAB1(F),XB(b)
    • S(a);N_GUARD::S(B)
    • S(a);N_GUARD::S(B),XS(a)
    • S(a);OGATE,XP(D)::R1(E),XS(a)
    • S(e);N_GUARD::QAR2(F),XS(e)
  • Tries
    • Try
      • K(I);P-FLIGHT,XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);OGATE,XR(E)::QAB1(F),XB(b)
        • S(a);OGATE,XP(D)::R1(E),XS(a)
      • Refutation
        • P(d);
    • Try
      • S(H);
      • Threat
        • R1(E)
      • Vars
        • B(b);P_PINS(H),SBLOCK,XR(E)::S(B)
        • S(e);OGATE,XS(H)::QAR2(F),XS(e)
      • Refutation
        • P(d);
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • B(b);CHECK,OGATE,XR(E)::QAB1(F),XB(b)
      • Refutation
        • P(d);
  • Actual
    • Q(F);
    • Threat
      • S(B)
    • Vars
      • B(b);CHECK,SBLOCK,XR(E)::QAR(F)+S(H)
      • S(a);SBLOCK,XP(D)::R1(E)
      • S(e);N_GUARD::QAB1(F),XS(e)
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