MESON Chess Problem Database

Problem Display
PID: 24226 (8/1K6/2Npk1BB/8/8/2Q5/8/8 w - - 0 1)

Murarasu, Ion

The Problemist, 1991

8/1K6/2Npk1BB/8/8/2Q5/8/8

#2

5 + 2

2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Qh3#
  • Tries
    • 1.Kb6?
      • 1...Kd5
        • 2.Qb3#
      • 1...Kd7
        • 2.Qh3#
      • 1...d5!
    • 1.Kc7?
      • 1...d5
        • 2.Qe5#
      • 1...Kd5!
    • 1.Kc8?
      • 1...d5
        • 2.Qe5#
      • 1...Kd5!
    • 1.Bf7+?
      • 1...Kf5
        • 2.Qf3#
      • 1...Kd7
        • 2.Qh3#
      • 1...Kxf7!
    • 1.Qd4?
      • 1...Kd7
        • 2.Qg4#
      • 1...d5!
    • 1.Qa5?
      • threat
        • 2.Qf5#
      • 1...Kf6
        • 2.Qf5#
      • 1...Kd7
        • 2.Qf5#
      • 1...d5!
    • 1.Qe5+?
      • 1...Kd7
        • 2.Bf5#
        • 2.Be8#
        • 2.Qf5#
        • 2.Qe7#
        • 2.Qe8#
      • 1...dxe5!
    • 1.Qg7?
      • threat
        • 2.Qf7#
      • 1...d5
        • 2.Qe7#
      • 1...Kd5!
    • 1.Qc2?
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Bf7#
      • 1...Kf6
        • 2.Qf5#
      • 1...Kd7
        • 2.Qf5#
      • 1...d5!
    • 1.Qa3?
      • 1...Kf6
        • 2.Qxd6#
      • 1...Kd7
        • 2.Qh3#
      • 1...d5
        • 2.Qe7#
      • 1...Kd5!
    • 1.Qb3+?
      • 1...Kf6
        • 2.Qf7#
      • 1...Kd7
        • 2.Qf7#
        • 2.Qh3#
      • 1...d5!
    • 1.Qd3?
      • threat
        • 2.Qf5#
      • 1...Kf6
        • 2.Qf5#
        • 2.Qxd6#
      • 1...Kd7
        • 2.Qf5#
        • 2.Qh3#
      • 1...d5!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Bf7#
      • 1...Kd7
        • 2.Bf5#
        • 2.Be8#
        • 2.Qh3#
        • 2.Qe7#
        • 2.Qe8#
      • 1...Kf6!
    • 1.Qf3?
      • threat
        • 2.Qf5#
        • 2.Qf7#
      • 1...Kd7
        • 2.Qg4#
        • 2.Qh3#
        • 2.Qf5#
        • 2.Qf7#
      • 1...d5!
    • 1.Qh3+?
      • 1...Kf6
        • 2.Qf5#
      • 1...Kd5!
    • 1.Qc4+?
      • 1...Kf6
        • 2.Qf7#
      • 1...Kd7
        • 2.Qf7#
        • 2.Qg4#
      • 1...d5!
    • 1.Qc5?
      • threat
        • 2.Qf5#
      • 1...Kf6
        • 2.Qxd6#
        • 2.Qf5#
      • 1...Kd7
        • 2.Qf5#
      • 1...d5
        • 2.Qe7#
      • 1...dxc5!
  • Keys
    • 1.Qb4!
      • 1...Kd5
        • 2.Bf7#
      • 1...Kf6
        • 2.Qxd6#
      • 1...Kd7
        • 2.Qg4#
      • 1...d5
        • 2.Qe7#

Anticipated by 157269(1881)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • P(a);
    • Try
      • K(E);P-FLIGHT
      • Vars
        • P(a);N_GUARD::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(E);S_FLIGHT
      • Vars
        • P(a);N_GUARD::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT,XB(C)
    • Try
      • Q(A);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);S_FLIGHT::B(C)
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A),XP(a)
        • K(b);S_FLIGHT::QAB(A)
        • P(a);OGATE,SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::B(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • P(a);OGATE,SBLOCK::QAR1(A)
      • Refutation
        • P(a);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::B(C)
      • K(b);P-FLIGHT::QAR2(A),XP(a)
      • K(b);S_FLIGHT::QAB(A)
      • P(a);OGATE,SBLOCK::QAR1(A)
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