MESON Chess Problem Database

Problem Display
PID: 61448 (6Q1/p2N4/3ppp2/1p1rb2r/1PPkP3/R5n1/K3pP2/1BR1B2n w - - 0 1)

Guida, Marco

Sp. HM., The Problemist, 2005/II

6Q1/p2N4/3ppp2/1p1rb2r/1PPkP3/R5n1/K3pP2/1BR1B2n

#2

11 + 12

4901 Best Problems 2007
56 The Problemist 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf2
      • 2.Bxf2#
    • 1...Sxe4
      • 2.Rd3#
    • 1...bxc4
      • 2.Bc3#
  • Tries
    • 1.Kb3?
      • threat
        • 2.Bc3#
      • 1...bxc4+
        • 2.Rxc4#
      • 1...Sxf2
        • 2.Bxf2#
      • 1...Sxe4!
    • 1.Sb6?
      • threat
        • 2.Bc3#
      • 1...Sxf2
        • 2.Bxf2#
      • 1...Sxe4
        • 2.Rd3#
      • 1...axb6!
    • 1.Qg4?
      • threat
        • 2.Rd3#
      • 1...Sxf2
        • 2.Bxf2#
      • 1...bxc4
        • 2.Bc3#
      • 1...Bf4!
    • 1.Qc8?
      • threat
        • 2.Bc3#
      • 1...Sxf2
        • 2.Bxf2#
      • 1...Sxe4
        • 2.Rd3#
      • 1...Rc5!
    • 1.f3?
      • threat
        • 2.Rd3#
      • 1...Sf2
        • 2.Bxf2#
      • 1...bxc4!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Qxd5#
      • 1...Rc5
        • 2.Bc3#
      • 1...Bf4
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(a);OGATE,XP(E)::B(C),XS(a)
    • S(c);SBLOCK,XP(I)::R1(F)
    • P(e);SBLOCK,XP(H)::B(C)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • B(C)
      • Vars
        • P(e);CHECK,OGATE,XP(H)::R1(B),XP(e)
        • S(a);OGATE,XP(E)::B(C),XS(a)
      • Refutation
        • S(c);XP(I)
    • Try
      • S(J);
      • Threat
        • B(C)
      • Vars
        • S(a);OGATE,XP(E)::B(C),XS(a)
        • S(c);SBLOCK,XP(I)::R1(F)
      • Refutation
        • P(l);XS(J)
    • Try
      • Q(K);
      • Threat
        • R1(F)
      • Vars
        • S(a);OGATE,XP(E)::B(C),XS(a)
        • P(e);SBLOCK,XP(H)::B(C)
      • Refutation
        • B(g);
    • Try
      • Q(K);
      • Threat
        • B(C)
      • Vars
        • S(a);OGATE,XP(E)::B(C),XS(a)
        • S(c);SBLOCK,XP(I)::R1(F)
      • Refutation
        • R(f);
    • Try
      • P(E);
      • Threat
        • R1(F)
      • Vars
        • S(a);N_GUARD::B(C),XS(a)
      • Refutation
        • P(e);XP(H)
  • Actual
    • Q(K);XP(j)
    • Threat
      • QAR1(K),XR(f)
    • Vars
      • R(f);::B(C)
      • B(g);::R1(F)
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