MESON Chess Problem Database

Problem Display
PID: 107834 (Q7/8/p1PP4/P2kP3/P2p2P1/3N4/3K4/8 w - - 0 1)

Burda, Josef

UV CSTV, 1968

Q7/8/p1PP4/P2kP3/P2p2P1/3N4/3K4/8

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qg8#
    • 1...Ke4
      • 2.c7#
    • 1...Ke6
      • 2.Qg8#
  • Tries
    • 1.Kc2?
      • 1...Kc4
        • 2.Qg8#
      • 1...Ke6
        • 2.Qg8#
      • 1...Ke4!
    • 1.Ke2?
      • 1...Ke4
        • 2.c7#
      • 1...Ke6
        • 2.Qg8#
      • 1...Kc4!
    • 1.Qxa6?
      • 1...Ke6
        • 2.Qc4#
      • 1...Ke4!
    • 1.Qc8?
      • 1...Kc4
        • 2.Qe6#
        • 2.Qg8#
      • 1...Ke4!
    • 1.Qe8?
      • 1...Kc4
        • 2.Qf7#
        • 2.Qe6#
        • 2.Qg8#
      • 1...Ke4!
    • 1.Qh8?
      • 1...Kc4
        • 2.Qg8#
      • 1...Ke4
        • 2.Qh1#
      • 1...Ke6
        • 2.Qg8#
      • 1...Kxc6!
    • 1.c7+?
      • 1...Kc4
        • 2.Qg8#
      • 1...Ke6!
    • 1.d7?
      • 1...Kc4
        • 2.Qg8#
      • 1...Ke4
        • 2.c7#
      • 1...Ke6!
  • Keys
    • 1.Qb7!
      • 1...Kc4
        • 2.Qf7#
      • 1...Ke4
        • 2.c7#
      • 1...Ke6
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(I)
    • K(b);S_FLIGHT::QAB(I)+P(G)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB(I)+P(G)
        • K(b);S_FLIGHT::QAB(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);XP(c)
      • Vars
        • K(b);S_FLIGHT::QAB(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);
      • Vars
        • K(b);S_FLIGHT::QAB(I)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
    • Try
      • P(G);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(H);
      • Vars
        • K(b);S_FLIGHT::QAB(I)
        • K(b);S_FLIGHT::QAB(I)+P(G)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(I);
    • Vars
      • K(b);S_FLIGHT::QAB(I)
      • K(b);S_FLIGHT::QAB(I)+P(G)
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