MESON Chess Problem Database

Problem Display
PID: 211349 (3B4/8/8/N2p4/3kp3/8/4K2Q/8 w - - 0 1)

Kloostra, Juan

The Problemist, 1986

3B4/8/8/N2p4/3kp3/8/4K2Q/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qg3?
      • threat
        • 2.Bb6#
      • 1...e3
        • 2.Qxe3#
      • 1...Kc5!
    • 1.Qf4?
      • 1...Kc3
        • 2.Qd2#
      • 1...Kc5!
    • 1.Qf2+?
      • 1...Ke5
        • 2.Qf6#
      • 1...e3
        • 2.Qxe3#
      • 1...Kc3!
  • Keys
    • 1.Qh6!
      • 1...Kc3
        • 2.Qd2#
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qf6#
      • 1...e3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • B(D)
      • Vars
        • P(b);::QAB1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • P(b);P_SPINP(b)::QAB1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • P(b);::QAB1(B),XP(b)
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