MESON Chess Problem Database

Problem Display
PID: 10280 (2K4Q/8/2N5/1k6/3B4/8/P5P1/8 w - - 0 1)

Kosolapov, Nikolai

Novosty, 1963

2K4Q/8/2N5/1k6/3B4/8/P5P1/8

#2

6 + 1

4204 Express 1964
3747 FIDE Album (1962-1964) 1968
5862 An ABC of Chess Problems 1970
3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qe5+?
      • 1...Ka4
        • 2.Qa5#
      • 1...Ka6
        • 2.Sb4#
        • 2.Sb8#
        • 2.Qe2#
        • 2.Qa5#
      • 1...Kxc6
        • 2.Qc5#
      • 1...Kc4!
    • 1.Qh5+?
      • 1...Ka4
        • 2.Qa5#
      • 1...Ka6
        • 2.Sb4#
        • 2.Sb8#
        • 2.Qe2#
        • 2.Qa5#
      • 1...Kxc6
        • 2.Qc5#
      • 1...Kc4!
    • 1.Qd8?
      • 1...Ka4
        • 2.Qa5#
      • 1...Ka6
        • 2.Qa5#
        • 2.Qb6#
      • 1...Kxc6
        • 2.Qd7#
      • 1...Kc4!
    • 1.Qf8?
      • 1...Ka4
        • 2.Qb4#
      • 1...Ka6
        • 2.Qf1#
      • 1...Kxc6
        • 2.Qc5#
      • 1...Kc4!
    • 1.Qg8?
      • 1...Ka4
        • 2.Qb3#
      • 1...Ka6
        • 2.Qc4#
      • 1...Kxc6!
  • Keys
    • 1.Qh3!
      • 1...Ka4
        • 2.Qb3#
      • 1...Kc4
        • 2.Qb3#
      • 1...Ka6
        • 2.Qd3#
      • 1...Kxc6
        • 2.Qd7#

This anticipates 204611(1977)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(F)
        • K(a);S_FLIGHT,XS(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(F)
        • K(a);S_FLIGHT,XS(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
        • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
        • K(a);S_FLIGHT::QAB(F)
        • K(a);S_FLIGHT,XS(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);S_FLIGHT::QAB(F)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);S_FLIGHT::QAB(F)
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(F)
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