MESON Chess Problem Database

Problem Display
PID: 7205 (8/8/8/1K6/3k4/2N5/1QP2R2/8 w - - 0 1)

Markevitch, Alex

Comm., StrateGems, 1998

8/8/8/1K6/3k4/2N5/1QP2R2/8

#2

5 + 1

145 StrateGems 1999
2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Tries
    • 1.Kc6?
      • 1...Ke3
        • 2.Qb6#
      • 1...Kc4
        • 2.Rf4#
      • 1...Ke5!
    • 1.Se2+?
      • 1...Ke3
        • 2.Qd4#
      • 1...Ke4
        • 2.Qd4#
      • 1...Kd5!
    • 1.Rf4+?
      • 1...Ke3
        • 2.Qc1#
      • 1...Ke5!
    • 1.Qa1?
      • 1...Ke3
        • 2.Qa7#
      • 1...Ke5!
    • 1.Qc1?
      • 1...Kxc3
        • 2.Qa1#
      • 1...Ke5!
    • 1.Qa3?
      • threat
        • 2.Qc5#
      • 1...Ke3
        • 2.Qc5#
        • 2.Qa7#
      • 1...Ke5!
    • 1.Qb3?
      • 1...Ke5
        • 2.Qd5#
      • 1...Ke3!
    • 1.Qb4+?
      • 1...Ke3
        • 2.Sd1#
        • 2.Qc5#
        • 2.Qf4#
      • 1...Ke5!
  • Keys
    • 1.Qa2!
      • 1...Kxc3
        • 2.Qa1#
      • 1...Ke3
        • 2.Qa7#
      • 1...Ke5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB(A)
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(D)::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB(A)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);S_FLIGHT::QAR1(A)
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