MESON Chess Problem Database

Problem Display
PID: 7529 (k5r1/1p6/8/1N6/8/6BQ/8/7K w - - 0 1)

Kuligin, Nikolai Volodimirovich

Buletin Problemistic, 1991

k5r1/1p6/8/1N6/8/6BQ/8/7K

#2

4 + 3

2838 Fun with Chess Miniatures 1996
145 StrateGems 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg3
      • 2.Qc8#
    • 1...Rg5
      • 2.Qc8#
    • 1...Rg6
      • 2.Qc8#
    • 1...Rg7
      • 2.Qc8#
    • 1...Rc8
      • 2.Qxc8#
    • 1...Rh8
      • 2.Qxh8#
    • 1...b6
      • 2.Qg2#
  • Tries
    • 1.Bf4?
      • threat
        • 2.Qa3#
      • 1...b6
        • 2.Qf3#
      • 1...Rg3
        • 2.Qc8#
      • 1...Rg6
        • 2.Qc8#
      • 1...Rh8
        • 2.Qxh8#
      • 1...Rg1+!
    • 1.Qf1?
      • threat
        • 2.Qa1#
      • 1...Rxg3
        • 2.Qf8#
      • 1...b6
        • 2.Qg2#
        • 2.Qf3#
      • 1...Rg4
        • 2.Qf8#
      • 1...Rg6
        • 2.Qf8#
      • 1...Rh8+!
    • 1.Qe6?
      • threat
        • 2.Qa2#
        • 2.Qxg8#
      • 1...Rxg3
        • 2.Qc8#
        • 2.Qe8#
      • 1...b6
        • 2.Qd5#
        • 2.Qe4#
        • 2.Qc6#
      • 1...Rg4
        • 2.Qc8#
        • 2.Qe8#
      • 1...Rg5
        • 2.Qa2#
        • 2.Qc8#
        • 2.Qe8#
      • 1...Rg6
        • 2.Qc8#
        • 2.Qe8#
      • 1...Rg7
        • 2.Qa2#
        • 2.Qc8#
        • 2.Qe8#
      • 1...Rb8
        • 2.Qa2#
      • 1...Rc8
        • 2.Qa2#
        • 2.Qxc8#
      • 1...Rd8
        • 2.Qa2#
      • 1...Re8
        • 2.Qa2#
        • 2.Qxe8#
      • 1...Rf8
        • 2.Qa2#
      • 1...Rh8+!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qa4#
      • 1...Rxg3
        • 2.Qd8#
      • 1...b6
        • 2.Qe4#
      • 1...Rg4
        • 2.Qd8#
      • 1...Rg6
        • 2.Qd8#
      • 1...Rh8
        • 2.Qxh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD,XB(B)::QAR2(C)
    • R(c);N_GUARD::QAR2(C)
    • R(c);N_GUARD::QAR2(C),XR(c)
    • R(c);OGATEB,P_PINQ(C)::QAB1(C),XR(c)
    • P(a);OGATEB::QAB(C)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR(C)
      • Vars
        • P(a);OGATEB::QAB(C)
        • R(c);N_GUARD::QAR2(C)
        • R(c);OGATEB,P_PINQ(C)::QAB1(C),XR(c)
      • Refutation
        • R(c);CHECK
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • R(c);N_GUARD,XB(B)::QAR(C)
        • R(c);N_GUARD::QAR(C)
      • Refutation
        • R(c);CHECK
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::QAR(C)
      • Refutation
        • R(c);CHECK
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • R(c);N_GUARD,XB(B)::QAR(C)
      • P(a);OGATEB::QAB(C)
      • R(c);N_GUARD::QAR(C)
      • R(c);OGATEB,P_PINQ(C)::QAB1(C),XR(c)
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