MESON Chess Problem Database

Problem Display
PID: 147637 (Q1B5/2p5/8/3Nk3/2K5/8/8/8 w - - 0 1)

Blaus, Imants

Mat, 1969

Q1B5/2p5/8/3Nk3/2K5/8/8/8

#2

4 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qb7?
      • 1...Kd6
        • 2.Qxc7#
      • 1...c5
        • 2.Qe7#
      • 1...c6
        • 2.Qe7#
      • 1...Ke4!
    • 1.Qa1+?
      • 1...Kd6
        • 2.Qf6#
      • 1...Ke4!
    • 1.Qa3?
      • threat
        • 2.Qe7#
      • 1...Ke4
        • 2.Qe3#
      • 1...c5!
    • 1.Qb8?
      • 1...Kd6
        • 2.Qxc7#
      • 1...Ke4!
  • Keys
    • 1.Qa7!
      • 1...Ke4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qxc7#
      • 1...c5
        • 2.Qe7#
      • 1...c6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(C),XP(b)
        • P(b);OGATE::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);P_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::QAB1(C),XP(b)
      • P(b);OGATE::QAR2(C)
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Developed and maintained by Brian Stephenson.
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