MESON Chess Problem Database

Problem Display
PID: 78081 (8/3n2Qp/7P/5p2/4Pk1K/8/3N1P1b/8 w - - 0 1)

Velimirovic, Milan

Mat Plus, 1996

8/3n2Qp/7P/5p2/4Pk1K/8/3N1P1b/8

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qg3#
    • 1...Bg3+
      • 2.Qxg3#
    • 1...Sc5
      • 2.Qc7#
    • 1...Se5
      • 2.Qg5#
    • 1...Sb6
      • 2.Qc7#
    • 1...Sf6
      • 2.Qc7#
    • 1...Sb8
      • 2.Qc7#
    • 1...Sf8
      • 2.Qc7#
    • 1...fxe4
      • 2.Qg5#
  • Tries
    • 1.Kh5?
      • 1...fxe4
        • 2.Qg5#
      • 1...Bg1
        • 2.Qg3#
      • 1...Bg3
        • 2.Qxg3#
      • 1...Sc5
        • 2.Qc7#
      • 1...Se5
        • 2.Qg5#
      • 1...Sb6
        • 2.Qc7#
      • 1...Sb8
        • 2.Qc7#
      • 1...Sf8
        • 2.Qc7#
      • 1...Sf6+!
    • 1.Qg2?
      • threat
        • 2.Qxh2#
      • 1...Bg3+
        • 2.Qxg3#
      • 1...fxe4
        • 2.Qxe4#
        • 2.Qg5#
      • 1...Bg1
        • 2.Qg3#
      • 1...Ke5!
  • Keys
    • 1.Qd4!
      • threat
        • 2.e5#
      • 1...Bg3+
        • 2.fxg3#
      • 1...fxe4
        • 2.Qxe4#
      • 1...Sc5
        • 2.Qd6#
      • 1...Se5
        • 2.Qe3#
      • 1...Sf6
        • 2.Qd6#

This is a version of 6112

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAB1(F)
    • B(a);CHECK,N_GUARD::QAB1(F),XB(a)
    • S(d);OGATE::QAB(F)
    • S(d);SBLOCK::QAB1(F)
    • P(c);XP(C)::QAB1(F)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(c);XP(C)::QAB1(F)
        • B(a);N_GUARD::QAB1(F)
        • B(a);N_GUARD::QAB1(F),XB(a)
        • S(d);OGATE::QAB(F)
        • S(d);SBLOCK::QAB1(F)
      • Refutation
        • S(d);CHECK
    • Try
      • Q(F);
      • Threat
        • QAB(F),XB(a)
      • Vars
        • B(a);CHECK,N_GUARD::QAB1(F),XB(a)
        • B(a);N_GUARD::QAB1(F)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+P(C)
    • Vars
      • B(a);CHECK,OGATE::P(B),XB(a)
      • P(c);OGATE,P_SPINP(c),XP(C)::QAR1(F),XP(c)
      • S(d);N_GUARD::QAB(F)
      • S(d);SBLOCK::QAB1(F)
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