MESON Chess Problem Database

Problem Display
PID: 104535 (3r4/bb1PBn2/6pq/4k3/nN5p/r3pR1B/pPQPNP2/K7 w - - 0 1)

Nikolic, Zoran

Bilten, 2002

3r4/bb1PBn2/6pq/4k3/nN5p/r3pR1B/pPQPNP2/K7

#2

11 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb8
      • 2.d4#
    • 1...Sc5
      • 2.d4#
    • 1...Sb6
      • 2.d4#
    • 1...Sd6
      • 2.Bf6#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Rf5+?
      • 1...gxf5
        • 2.Qxf5#
      • 1...Ke6!
    • 1.Rf6?
      • threat
        • 2.Re6#
      • 1...Sc5
        • 2.d4#
      • 1...Sg5
        • 2.f4#
      • 1...g5
        • 2.Qf5#
      • 1...Bd5!
    • 1.Qc6?
      • threat
        • 2.Bf6#
        • 2.Qe6#
      • 1...Qf4
        • 2.Qe6#
      • 1...Qg5
        • 2.Qe6#
      • 1...Qg7
        • 2.Qe6#
      • 1...Qh8
        • 2.Qe6#
      • 1...Sc5
        • 2.Bf6#
        • 2.d4#
      • 1...Sg5
        • 2.Bd6#
        • 2.Bf6#
      • 1...Sd6
        • 2.Bxd6#
        • 2.Bf6#
      • 1...g5
        • 2.Rf5#
      • 1...Bxc6!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qe6#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sc5
        • 2.Qd4#
      • 1...Sg5
        • 2.Qf4#
      • 1...g5
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(i);N_GUARD::P(D)
    • S(d);S_CUTB(i)::P(D)
    • S(k);SBLOCK::B(K)
    • P(g);N_GUARD::QAR1(C)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • P(g);OGATE,XR(G)::QAR1(C),XP(g)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • R(G);
      • Threat
        • R1(G)
      • Vars
        • S(d);S_CUTB(i)::P(D)
        • S(k);S_CUTQ(h)::P(F)
        • P(g);N_GUARD::QAR1(C)
      • Refutation
        • B(j);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);::QAR1(C)
        • P(g);N_GUARD::R1(G)
      • Refutation
        • B(j);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • B(j);N_GUARD::QAR1(C),XB(j)
      • S(d);S_CUTB(i)::QAB1(C)
      • S(k);S_CUTQ(h)::QAB1(C)
      • P(g);N_GUARD::R1(G)
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